What is the trend in atomic radius as you go across a period

Answers

Answer 1

Answer: Atomic radius decreases across a period and increases down a group.


Related Questions

For every pound a company spends on advertising, it spends £0,75 on its website. Express the
amount spent on advertising to the amount spent on its website as a ratio in its simplest form.

Answers

It will have a ratio of 4:3

Using the following reaction, determine the theoretical yield of Acetylsalicylic acid if given 2.31 grams of salicylic acid? (reminder, salicylic acid is the limiting reagent)

Answers

The theoretical yield of Acetylsalicylic acid is found out to be: 3.01 grams.

What is limiting reagent?

The limiting reagent is a substance that prevents a chemical reaction from occurring completely.

When a limiting reagent is used in a chemical reaction, the atoms, molecules, or ions of the other reactant that it (the limiting reagent) reacts with will either stay free or unreacted.

What is acid?

Popular compounds called acids and bases interact with one another to create salt and water. The Latin word "acere," which meaning "sour," is where the term "acid" originates.

According to the problem, we have 2.31 grams of salicylic acid. We need to determine the theoretical yield of acetylsalicylic acid.

The molar mass of salicylic acid is 138.12 g/mol. Therefore, the number of moles of salicylic acid we have is:

n = mass / molar mass

n = 2.31 g / 138.12 g/mol

n = 0.0167 mol

According to the balanced equation, 1 mole of salicylic acid reacts with 1 mole of acetic anhydride to produce 1 mole of acetylsalicylic acid. Therefore, the number of moles of acetylsalicylic acid produced is also 0.0167 mol.

The molar mass of acetylsalicylic acid is 180.16 g/mol. Therefore, the theoretical yield of acetylsalicylic acid is:

mass = n x molar mass

mass = 0.0167 mol x 180.16 g/mol

mass = 3.01 g

Therefore, the theoretical yield of acetylsalicylic acid is 3.01 grams.

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exhibits the highest intermolecular
forces of the states of matter.

exhibits the highest intermolecularforces of the states of matter.

Answers

Answer:

Solid

Explanation:

In solid there are strong intermolecular forces present as compared to liquid and gas. This is why solid are in more packed form as compared to liquid and gas. In liquid and gas intermolecular forces are week that's why molecules are away from each other and occupy more space.

Properties of gases:

Molecule of gases randomly move everywhere and occupy all available space.

Gases don't have definite volume and shape and take the shape and volume of container in which it present.

Their densities are very low as compared to the liquid and solids.

Gas molecules are at long distance from each other therefore by applying pressure gases can be compressed.

The very weak inter molecular forces are present between gas molecules.

Properties of Liquid:

Liquid have definite volume but don't have definite shape.

Their densities are high as compared to the gases but low as compared to the solids.

In liquid, molecules are close to each other and have greater inter molecular forces as compared to the gas molecules.

Properties of solids:

Solids have definite volume and shape.

In solids molecules are tightly pack and very close to each other.

Their melting and boiling point are every high.

The densities of solids are also very high as compared to the liquid and gas.

There are very strong inter molecular forces are present between solid molecules.

Answer:

A: Solid

Explanation:

Correct with Acellus

What mass of water is produced from the complete combustion of 6.60×10−3 g of methane?

Answers

I got 63g hope this helps you :)
What mass of water is produced from the complete combustion of 6.60103 g of methane?

Which is the correct statement regarding the relative Rf values of the starting methyl benzoate vs the product, methyl m-nitrobenzoate on a silica gel TLC plate. The product has a higher Rf value on a silica gel TLC plate because it is less polar than the starting methyl benzoate. The product has a lower Rf value on a silica gel TLC plate because it is less polar than the starting methyl benzoate. The product has a higher Rf value on a silica gel TLC plate because it is more polar than the starting methyl benzoate. The product has a lower Rf value on a silica gel TLC plate because it is more polar than the starting methyl benzoate. 1.5 points QUESTION 2 Methyl benzoate is more reactive than benzene in Electrophilic Aromatic Substition [EAS] reactions. True False 1 points QUESTION 3 Methyl m-nitrobenzoate is less reactive than methyl benzoate in Electrophilic Aromatic Substition [EAS] reactions. True False

Answers

Answer:

1. The product has a higher Rf value on a silica gel TLC plate because it is more polar than the starting methyl benzoate.

2. False

3. True

Explanation:

In chromatography, there is a stationary phase and a mobile phase. The ratio of the distance moved by a component and the distance moved by the solvent gives the retention factor (Rf).

Since silica gel is a polar solvent, it will retain the more polar product methyl m-nitrobenzoate compared to the methyl benzoate starting material.

In comparing the electrophillic aromatic substitution of m-nitrobenzoate  and methyl benzoate, we must remember that the presence of electron withdrawing groups (such as -NO2 and -CHO) on the aromatic compound deactivates the compound towards electrophillic aromatic substitution hence, methyl m-nitrobenzoate is less reactive than methyl benzoate in Electrophilic Aromatic Substition and Methyl benzoate is less reactive than benzene in Electrophilic Aromatic Substition

The final result has a higher Rf value because the TLC plate has more polarity than the other compound.

The answer to the following question is as follows:-

False True

In chromatography, it is a process that is used to separate the different components on the basis of their votality. The ratio of the distance moved by a component and the distance moved by the solvent gives the retention factor (Rf).

In comparing the electrophilic aromatic substitution of m-nitrobenzoate and methyl benzoate, we must remember that the presence of electron-withdrawing groups on the aromatic compound deactivates.

The compound towards electrophilic aromatic substitution hence, methyl m-nitrobenzoate is less reactive than methyl benzoate in Electrophilic Aromatic Substitution and Methyl benzoate is less reactive than benzene in Electrophilic Aromatic Substitution.  

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Blue light waves have more energy than red light waves. Which of these situations most likely produces a photoelectric effect? You may assume that the same metal is used in each situation.

Answers

Answer:

You may assume that the same metal is used in each situation. Light is emitted by electrons when they drop from one energy level to a lower level.

A resistor is placed in a circuit. The voltage of the circuit is changed and the current is measured. The graph seen here shows the data that was collected. Determine the resistance of the resistor in this circuit.

Answers

answer- 2 Ohms

explain- i took the test!

This technology had the biggest impact on the capabilities of diagnostic testing. A.computers B.the Internet C.transportation D.the microscope​

Answers

Answer:

A: computers, is the answer I believe

4. Long answer type questions: a. b. C. d. e. f. g. h. j. i. What are the constituent gases of air? Why is the surrounding air not seen with the eyes? How do you prove that air supports burning? How do you show that air occupies space? How do you prove that air has weight? How is air useful to us? Mention any three points. Write any three properties of air. How can you say that air exerts force? Write any four effects of air pollution. Write any three causes of air pollution and any two control measures of it.​

Answers

1. The constituent gases of air are:

Nitrogen Oxygen Argon Carbon Dioxide

2. The surrounding air is not seen with the eyes because it is transparent. Air molecules are not visible to the na-ked eye, and they do not scatter or absorb visible light significantly. Therefore, air appears colorless and transparent.

What is air?

3. To prove that air supports burning, you can perform an experiment with a burning candle. Place a glass jar or bell jar over a lit candle, ensuring that the jar is airtight. As the candle burns, it consumes oxygen from the air inside the jar. Eventually, the candle flame will go out due to the lack of oxygen, proving that air (specifically oxygen) is necessary for burning.

4. To show that air occupies space, you can perform a simple experiment using a plastic bottle or syringe. Fill the bottle or syringe with water, ensuring there are no air bubbles. Then, cover the opening tightly and try to compress the air inside. You will find that it is not possible to compress the air significantly, indicating that air occupies space.

5. To prove that air has weight, you can use a sensitive balance or scale. Weigh an airtight container or balloon, and then fill it with air. The weight of the container or balloon with the added air will be greater than its initial weight, demonstrating that air has weight.

6. Air is useful to us in various ways. Three points highlighting the importance of air are:

Breathing and RespirationCombustion and Energy ProductionClimate Regulation

7. Three properties of air include:

Air is Compressible: Air can be compressed or expanded under different conditions, allowing it to fill various spaces and containers.Air has Mass: Air molecules have mass, which means air itself has weight. It exerts pressure on objects and surfaces.Air Exerts Pressure: Due to the collisions of air molecules with surfaces, air exerts pressure in all directions. This pressure is known as atmospheric pressure.

Air exerts force in various ways. For example, air pressure allows objects like airplanes to fly by providing lift. Air resistance or drag opposes the motion of objects moving through the air, creating a force that can affect their speed and trajectory.

8. Four effects of air pollution include:

Respiratory ProblemsEnvironmental Damage:Climate ChangeHuman Health Impacts

9. Causes of pollution:

Industrial EmissionsVehicle EmissionsResidential and Agricultural Activities

10. Two control measures for air pollution include:

Emission ReductionAir Quality Regulations

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b. How many kJ of heat are needed to completely vaporize 50.0g of water at 100°C? [Ans:113. kJ]​

Answers

The amount, in kJ, of heat needed to completely vaporize 50.0g of water at 100°C is 118.8 kJ.

Heat of vaporization of water

The heat needed to completely vaporize 50.0g of water at 100°C can be calculated using the following formula:

q = m x Hv

where:

q is the heat needed in joules (J)m is the mass of water in grams (g)Hv is the heat of vaporization of water which is approximately 40.65 kJ/mol at standard temperature and pressure.

First, we need to convert 50.0g to moles by dividing by the molar mass of water which is approximately 18.015 g/mol3:

moles of water = 50.0 g / 18.015 g/mol moles of water = 2.776 mol

Thus:

q = (2.776 mol) x (40.65 kJ/mol) q = 112.8 kJ

In other words, 112.8 kJ of heat is needed to completely vaporize 50.0g of water at 100°C.

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Nose color is an inherited trait in dogs. Two puppies from the same set of parents have different color noses. One puppy has a pink nose and one puppy has a black nose. How can puppies from the same set of parents have different color noses?

A.
The pink-nosed puppy and the black nosed puppy must not actually be related.

B.
The pink-nosed puppy and the black nosed puppy inherited different combinations of the genes for nose color from their parents.

C.
The pink-nosed puppy has a different number of chromosomes than the black nosed puppy.

D.
The pink nosed puppy and the black nosed puppy have different chromosomes for the two nose colors.

Answers

Answer:

I thin its B im not sure though

Explanation:

The puppies from the same set of parents have different color noses because the pink-nosed puppy and the black nosed puppy inherited different combinations of the genes for nose color from their parents. Thus, the correct option is B.

What is a gene?

A gene is the unit of inheritance which is made up of DNA (deoxyribonucleic acid). Every person receives two copies or alleles of each gene which is inherited from each of the two parent.

Genes are made up of DNA, so each of the chromosome contains many different genes. Genes carry the information which determines the traits or characteristics that are passed on to their offspring or inherited from the parents.

The puppies from the same set of parents have different colored noses because pink-nosed puppy and the black nosed puppy inherited different combinations of the genes for nose color from their parents.

Therefore, the correct option is B.

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9. Calculate the pOH and pH of a 0.35 M solution of the weak acid HCN.
Ka HCN = 4.8 x 10-10

Answers

Answer:

=0.35hcn20 4.7 x hcn(poh) =hcn

ty sa pointd

List four reasons why the temperature of a flame is lower than the adiabatic flame temperature."

Answers

Answer:

substances is never entirely a one way

Explanation:

no possibility of obtaining complete combustion at hig

temperature.

always loss of heat from the temperature

its temperature is lower than the constant volume process because some of the energy is utilized to change the volume of the system

Four reasons why the temperature of flame is lower than adiabatic flame temperature is that there is  no possibility of obtaining complete combustion at high temperature due to high thermal energy.There is always loss of heat from temperature,its temperature is lower than constant volume process because some of  energy is utilized to change the volume of the system.

What is thermal energy?

Thermal energy is defined as a type of energy which is contained within a system which is responsible for temperature rise.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.

Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance whose molecules or atoms are vibrating faster.

These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the collision of particles , higher is the thermal energy.

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Calculate the pOH if the [OH-] concentration is 5.9 x 10_, M? Is the solution ACIDIC, BASIC, or NEUTRAL?

Answers

If the [OH-] concentration is 5.9 x 10^(-M), the pOH of the solution is approximately -4.77 and the solution is basic.

To calculate the pOH of a solution, we can use the formula:

pOH = -log[OH-]

Given that the [OH-] concentration is 5.9 x 10^(-M), we can substitute this value into the formula:

pOH = -log(5.9 x 10^(-M))

Calculating this expression, we find:

pOH = -log(5.9 x 10^(-M))

pOH ≈ -log(5.9) + (-log(10^(-M)))

Since log(10^(-M)) is equal to -M, the equation simplifies to:

pOH ≈ -log(5.9) - M

Now, we need the value of M (the exponent) to calculate the exact pOH value. It appears that the value of M is missing in the given information. However, assuming M is a positive value, we can continue the calculation.

If we consider M = 6, for instance, the equation becomes:

pOH ≈ -log(5.9) - 6

Now, we can evaluate the expression:

pOH ≈ 1.23 - 6

pOH ≈ -4.77

Therefore, if the [OH-] concentration is 5.9 x 10^(-M), the pOH of the solution is approximately -4.77.

To determine whether the solution is acidic, basic, or neutral, we can use the relationship between pH and pOH. The sum of the pH and pOH of a solution at 25°C is always equal to 14.

Since pOH = -4.77, the pH would be:

pH = 14 - pOH

pH ≈ 14 - (-4.77)

pH ≈ 18.77

A solution with a pH above 7 is considered basic. In this case, the calculated pH is greater than 7. Therefore, the solution is basic.

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the ph of a naoh solution is 12.05. what is the concentration of [oh-] of the naoh solution? express your answer in standard notation

Answers

Answer:

0.01 M

Explanation:

NaOH (sodium hydroxide) is a strong base, so it is completely dissociated into ions in aqueous solution:

NaOH ⇄ Na⁺ + OH⁻

So, we have OH⁻ ions in solution.

From the problem, we have the pH value. The pH is calculated as:

pH = -log [H⁺]

As NaOH is a base, we can also calculate the pOH:

pOH = -log [OH⁻]

Thus. we can use the relation between pH and pOH to calculate the pOH and then use it to calculate [OH⁻]:

pH + pOH = 14 ⇒ pOH = 14 - pH = 14 - 12.05 = 1.95

pOH = -log [OH⁻] ⇒ [OH⁻] = \(10^{-pOH}\)= \(10^{1.95}\)= 0.0112 M ≅ 0.01 M

Answer:

0.0112

Explanation:

They said that was the answer.

Can anyone help me with this question?

Can anyone help me with this question?

Answers

sure i can help

so u have to ask someone else

CAN SOMEONE HELP WITH THIS QUESTION?

CAN SOMEONE HELP WITH THIS QUESTION?

Answers

The percent transmittance (%T) and absorbance (A) of a solution are related by an equation which can be used to solve this question.

What is the absorbance of this solution?

The percent transmittance (%T) and absorbance (A) of a mixture are associated by the following equation:

%T = 100 x 10^(-A)

We are given that the %T value of the solution is 51.6% at a wavelength of 550 nm. To find the absorbance (A), we can rearrange the equation above:

A = -㏒(%T / 100)

On substituting the value in the given %T value, we get:

A = -㏒(51.6 / 100) = -㏒(0.516) = 0.286

Therefore, the absorbance of the solution at a wavelength of 550 nm is 0.286.

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If 3.0 grams of Strontium-90 in a rock sample remained in 1989, approximately how many grams of Strontium-90 were present in the original sample in 1933?

Answers

11.29 grams of strontium-ninety had been gift withinside the unique rock pattern in 1933. Strontium- ninety decays to yttrium-ninety, which in flip decays to solid zirconium.

The isotopes of strontium and yttrium emit beta debris as they decay. The launch of radiation throughout this decay manner reasons situation approximately the protection of strontium and all different radioactive substances. Sr-ninety may be inhaled, however ingestion in meals and water is the best fitness situation. Once withinside the body, Sr-ninety acts like calcium and is effectively included into bones and teeth, wherein it may purpose cancers of the bone, bone marrow, and smooth tissues across the bone.

Strontium has a half-existence of 28.8 years. Therefore,

1989 - 1933 = 56years.

fifty six / 28.eight = 1.94 half-lives

Thus, the amount of the radioisotope closing will double for every half-existence elapsed. transferring backwards in time. Therefore, transferring backwards in time through 1.94 times half-lives, the amount closing will double through 1.94 times.

Thus, the quantity closing in 1933 is 3.0 × (1.ninety four)² = 11.29 grams.

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helppp
Balancing Equation

helpppBalancing Equation

Answers

Answer:

Answer: C3H8 + 5O2 → 3CO2 + 4H2O.

Explanation:

Lily replicates an experiment that found that the number of calories in a particular food is 50 kcal. She obtained data from five trials: 50 kcal, 72 kcal, 50 kcal, 12 kcal, and 50 kcal. Which best describes her data results? O accurate O incorrect O invalid O precise
Helpppppp?!!?!​

Answers

Answer:

Invalid

Explanation:

Answer:

Accurate

Explanation:

. Calculate the number of moles of phosphoric acid (H3PO4) formed by the reaction of 10 moles of sulfuric acid (H2SO4). Ca5(PO4)3F + 5H2SO4  3H3PO4 + HF + 5CaSO4​

. Calculate the number of moles of phosphoric acid (H3PO4) formed by the reaction of 10 moles of sulfuric

Answers

10 moles of H2SO4 would produce 6 moles of H3PO4.

How to find the number of moles

The balanced chemical equation for the reaction is:

Ca5(PO4)3F + 5H2SO4 → 3H3PO4 + HF + 5CaSO4

From the equation, we can see that:

5 moles of H2SO4 react with 3 moles of H3PO4.

Therefore, the number of moles of H3PO4 formed by 10 moles of H2SO4 is:

10 mol H2SO4 × (3 mol H3PO4/5 mol H2SO4) = 6 mol H3PO4

We can say that, 10 moles of H2SO4 would produce 6 moles of H3PO4.

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A fossil is 3 half-life old. Measured Uranium-235 has half-life of 704 million years. How many years old is this fossil?

Answers

Answer: Uranium is not a problem in this case, as its radioactivity is very low. This is due to the long half-life. How much uranium will decay per second with a half-life of 700 million years? This is a very insignificant figure.

magnesium and bisulfate
Formula

Answers

Answer:

Molecular Formula is H2MgO8S2

Explanation:

Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction 2NH3 =N2H4 +H2

Answers

The reaction \(2NH_3=N_2H_4+H_2\) has a standard reaction free energy of -62.4 kJ/mol.

What is energy?

Energy is the capacity to carry out tasks or affect change. It comes in a variety of shapes and sizes, including kinetic energy (energy of motion), potential energy (stored energy of position), thermal energy (heat), electrical, chemical, and nuclear energy. Energy is required for the survival and growth of all living things. Additionally, it is necessary for the operation of industries and equipment.

Equation can be used to get a reaction's standard reaction free energy.

ΔG°rxn = ΣΔG°f (products) - ΣΔG°f (reactants).

For the reaction \(2NH_3=N_2H_4+H_2\), the ΔG°f values are as follows:

ΔG°f (\(2NH_3\)) = -46.2 kJ/mol

ΔG°f (\(N_2H_4\)) = -20.8 kJ/mol

ΔG°f (\(H_2\)) = 0 kJ/mo

The equation yields the average reaction free energy (ΔG°rxn) of the reaction is:

ΔG°rxn = (2 x -20.8) - (-46.2)

            = -62.4 kJ/mol

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Let's do this!
Balance each equation so there are the same number of each type of atom on both sides of the
equation There is a chart above each problem to help you count the atoms
First-Count up the
number of atoms you
currently have Write
that number in the
chart for both sides of
the equation
Second-If the
numbers don't match,
try adjusting the
coefficients one at at
time Make sure to
change the number in
the chart
Remember- you can't
change the formulas!
2
Reactants
Mg
M
Mg
LI
Reactants
H
LO +
Products
Mg
N
L
O
H
но →
_Math
Products
LIOH
You should
do this in
pencil

Answers

The balanced chemical equations of the reactions are given below:

1. Mg (s) + 2 H₂O (l) ----> Mg(OH)₂ (s) + H₂ (g)

2. 2 Li (s) +  2 H₂O (l) ----> LiOH (aq) + H₂ (g)

What is a balanced equation?

A balanced chemical equation is an equation in which the number of moles of atoms of elements in a given reaction is equal to the sum of the number of moles of atoms of each element that is produced.

A balanced chemical equation is in accordance with the law of conservation of mass which states that matter can neither be created nor destroyed.

When balancing chemical equations, numerical coefficients are added in front of moles of atoms of an element or moles of a given compound taking part in the reaction.

The balanced chemical equation of the reaction of magnesium and water as well as the reaction of lithium and water is given below:

Magnesium and water:

Mg (s) + 2 H₂O (l) ----> Mg(OH)₂ (s) + H₂ (g)

Lithium and water:

2 Li (s) +  2 H₂O (l) ----> LiOH (aq) + H₂ (g)

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What would a biologist see if she examined a small piece of a leaf from a plant and a small piece of a root from the same plant through a microscope?
Both the leaf and the root would be made up of cells.
O The leaf would be made up of cells, but the root would not be made up of cells.
o The root would be made up of cells, but the leaf would not be made up of cells. Ok
o Neither the root nor the leaf would be made up of cells because plants are not made of cells
up

Answers

Explanation:

What would a biologist see if she examined a small piece of a leaf from a plant and a small piece of a root from the same plant through a microscope? Both the leaf and the root would be made up of cells. The leaf would be made up of cells, but the root would not be made up of cells.

Answer:

both are made out of cells

Explanation:

both are parts of a plant, plants are liveing things, all liveing things are made of cells.

water is a unique material in that the density of the solid is lower than the density of the liquid (which is why ice forms at the top of a pond and why ice floats in our drinks). if the density for ice at 0C is .917g/mL and the density for water at 0C is .999 g/mL, what is the calculated free space (as %) for each of these materials. you will need to estimate the volume of water as the sum of 2 H atoms and 1 O atom with radii 37 and 66 pm respectively. note that you will also have to assume a quantity of water to perform this exercise

Answers

Answer:

% Free space in water = \(\frac{9.945* 10^{-7} }{1*10^{-6} }\)×100 = 99.45%

% Free space in ice  = \(\frac{9.98* 10^{-7} }{1*10^{-6} }\)×100 = 99.8%

Explanation:

As given ,

Density for ice at 0⁰C = 0.917 g/ml

Density for water at 0⁰C = 0.999 g/ml

Radii of H atoms = 37 pm

Radii of O atoms = 66 pm

Now,

Consider 1 ml of water = 1 cm²

As , we know that mass of water in 1 cm² = 0.999 g

Moles of water = \(\frac{0.999}{18} = 0.056\)

Volume of H₂O = 1.624×\(10^{-31}\) m²

Now,

Volume occupied by water = 0.056×6.022×\(10^{23}\)× 1.624×\(10^{-31}\) m²

                                              = 5.48×\(10^{-9}\) m²

⇒Volume occupied by water = 5.48×\(10^{-9}\) m²

Now,

Free space = 1×\(10^{-6}\)  - 5.48×\(10^{-9}\) = 9.95×\(10^{-7}\) m²

% Free space = \(\frac{9.945* 10^{-7} }{1*10^{-6} }\)×100 = 99.45%

Now,

Consider 1 ml of ice  = 1 cm²

S.I unit of ice = 1×\(10^{-6}\) m²

As , we know that mass of water in 1×\(10^{-6}\) m² = 0.917 g

Moles of ice = \(\frac{0.917}{18} = 0.012\)

Volume of H₂O = 6.022×\(10^{23}\) ×0.012

Volume of ice unit = \(\frac{4}{3} \pi (37*10^{-12})^{3} *2 + \frac{4}{3} \pi (66*10^{-12})^{3} = 1.624*10^{-31}m^{3}\)

Now,

Volume occupied by water = 0.012×6.022×\(10^{23}\)× 1.624×\(10^{-31}\) m²

                                              = 1.17×\(10^{-9}\) m²

⇒Volume occupied by water = 1.17×\(10^{-9}\) m²

Now,

Free space = 1×\(10^{-6}\)  - 1.17×\(10^{-9}\) = 9.98×\(10^{-7}\) m²

% Free space = \(\frac{9.98* 10^{-7} }{1*10^{-6} }\)×100 = 99.8%

A straight chain hydrocarbon with the formula C5H8_____

A straight chain hydrocarbon with the formula C5H8_____

Answers

Answer:

I has 2 double carbon carbon bonds

A straight chain hydrocarbon with the formula C5H8_____

“all elements are produced by all stars” why is this statement not completely true

Answers

It would be more accurate to say that all stars produce some elements, but not all elements are produced by all stars. While it is true that many elements are produced by stars through the process of nuclear fusion, not all elements are created by all stars.

For example, the heaviest elements such as gold and platinum are formed through a process called neutron capture, which occurs during supernova explosions or in the collision of neutron stars.

Additionally, some stars may not be massive enough or may not live long enough to produce certain elements. Therefore, it would be more accurate to say that all stars produce some elements, but not all elements are produced by all stars.

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Which one of the following can be classified as a weak electrolyte?
HBr
CaF2
OBr2
HF
F2

Answers

F2 can be classified as a weak electrolyte.

An electrolyte is a medium containing ions that conducts electricity through the movement of those ions but does not conduct electrons. Most soluble salts, acids, and bases dissolved in a polar solvent, such as water, fall into this category.

A strong electrolyte is a solution/solute that ionizes or dissociates completely or almost completely in solution. In the solution, these ions are excellent conductors of electric current. Originally, a "strong electrolyte" was defined as a chemical that conducts electricity well in aqueous solution. Hydrogen chloride is an example of a strong electrolyte. A weak electrolyte is one that does not completely dissolve in water.

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