Fill in the blanks to create the lesson question,

which is the broad question about gases that

Boyle's law answers. You will explore this

question in the lab experiment.

Lesson Question: What is the effect of

V pressure v on the volume of a gas?

3

COMPLETE

LID

Hypothesis: If the pressure on a gas is increased,

then its volume will

because

the gas molecules will

DONE

Intro

In the reduction reaction involving benzil, hot water and 95% ethanol act as a solvent pair. Among the two, ethanol is the better solvent as it can dissolve benzil more efficiently, while hot water serves as the poorer solvent due to its lower solubility for benzil.

In the reduction reaction, the 95% ethanol is the better solvent for benzil as it is able to dissolve more of the compound due to its polar nature. Hot water, on the other hand, is a poorer solvent for benzil as it is less polar and less able to dissolve the compound. However, both solvents are necessary for the reduction reaction as they help to create the necessary conditions for the reduction of benzil to take place.

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Answer:

38 g?

Explanation:

I'm not entirely sure, but perhaps it is 49 grams x 78.25%? This gives you an answer of 38 g using significant figures.

The actual formula for volume for a cube is the length multiplied by the width and then multiplied by the height. Since all three measurements are the same, the formula results in the measurement of one side cubed. For the example, 5^3 is 125 cm^3. Multiply the volume by the known density, which is the mass per volume.

The density of the cube is 1g/cm^3

Measurement of density contrasts the mass of an object with its volume. High density refers to the amount of matter in a given volume of an object.

The density of a substance indicates how dense it is in a particular area. Mass per unit volume is the definition of a material's density. In essence, density is a measurement of how closely stuff is packed. It is a special physical characteristic of a certain thing.

The Greek scientist Archimedes made the discovery of the density principle. If you are familiar with the formula and the relevant units, calculating density is simple. The letter D can also be used to signify density instead of the symbol.

Generally speaking, gases are less dense than liquids, while liquids are less dense than solids. This is a result of the fact that particles in solids are closely packed, those in liquids can slide past one another, and those in gases are unconstrained in their motion.

Therefore, the density of the cube is 1 g/cm^3

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The common name of the compound is 3-cyclopentylethanol.

Based on the given answer choices, the common name of the compound 1-cyclopropyl-1-ethylalcohol is ethylcyclopentanol. Here's a breakdown of the terms:

1. 3-cyclopentylethanol: This refers to an alcohol with an ethyl group (2 carbons) and a cyclopentyl group (5 carbon ring) connected to the third carbon of the ethyl group.

2. 1-cyclopropyl-1-ethylalcohol (ethylcyclopentanol): This compound has a cyclopropyl group (3 carbon ring) and an ethyl group connected to the same carbon, resulting in the common name ethylcyclopentanol.

3. Cyclopentyl ethyl ether: This compound is an ether with a cyclopentyl group and an ethyl group connected by an oxygen atom.

4. Cyclopentyl ethyl ketone: This compound is a ketone with a cyclopentyl group and an ethyl group connected by a carbonyl group (C=O).

So, the common name of the compound 1-cyclopropyl-1-ethylalcohol is ethylcyclopentanol.

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Answer:

pyruvate,NAD+

Explanation:

To get the bottom of the meniscus to the volumetric line of the pipette, tilt the pipette slowly and gently while keeping the top of the meniscus level. Make certain that you are gazing at the meniscus at eye level. Finally, add or subtract liquid as needed until the bottom of the meniscus reaches the volumetric line.

Follow these steps to get the bottom of the meniscus to the volumetric line of the pipette:

Fill the pipette with the liquid to be measured by dipping the tip of the pipette in the liquid and bringing it up to the required volume.

Hold the pipette upright and gently pour the liquid out until the meniscus (the curved surface of the liquid) is slightly above the pipette's calibration point.

To adjust the meniscus, use a clean and dry dropper to add or withdraw tiny drops of liquid from the pipette until the meniscus's bottom is at the pipette's calibration mark.

To maintain precision, hold the pipette upright during this operation and add or withdraw the liquid drop by drop.

Once the meniscus has reached the calibration point, you can transfer the liquid to the container of your choice or take any necessary measurements.

When correcting the meniscus, precision is essential since even little deviations might lead to erroneous results. It is also critical to use the correct pipette for the liquid being measured and to follow any special instructions or protocols supplied by your laboratory or project.

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Answer

A

Explanation

letter a kase tama

Answer:

Baking soda and vinegar react chemically because one is a base and the other is an acid. Baking soda is a basic compound called sodium bicarbonate. Vinegar is a diluted solution that contains acetic acid. ... The result of this initial reaction is two new chemicals: carbonic acid and sodium acetate.

Answer:

Volume is 0.0247L

Explanation:

This question involves the use of Boyle's law which states that the volume of a given mass of gas is inversely proportional to it's pressure provided that temperature remains constant.

Mathematically,

v = k/p

K = VP

P1V1 = P2V2 = P3V3 = .........=PnVn

V = volume

p = pressure

Data;

P1 =1.0atm

V1 = 1.73L

P2 = 70atm

V2 = ?

P1V1 = P2V2

V2 = P1V1 / P2

V2 = (1.0×1.73)/70

V2 = 0.0247L

The volume of the sample is 0.0247L

Answer:

True? I think so At least

Explanation:

I think its nitrogen, im not sure tho

Answer:

hey there !!

the mitochondrian is the cell organelle in which cellular respiration takes place and energy is produced during cellular respiration by break down of glucose in presence of oxygen to for energy units known as ATP ( adinosine tri - phosphate) molecule.

since it produces energy it is known as powerhouse of the cell.

i hope this helped.....you

Answer:

6.408924056 miles/hour.

Explanation:

First we have to convert 247.54 km to miles. The conversion factor will be 1 km = 0.621371 miles. To do this I set up my stoichiometry.

247.54km | 0.621371miles = 153.8141773 miles

                 |  1 km

Now we have 153.8141773 miles per 1 day. The conversion factor will be 1 day = 24 hours.

153.8141773 miles | 1 day       6.408924056 miles/hour.

1 day                      | 24 hours

(if you need to know what I did with the stoichiometry just ask! I'll be happy to help!)

A student compares the boiling point of substances having different intermolecular forces. Boiling points of various substances is the dependent variable that student most likely use.

The boiling point of a substance is proportional to the strength of its intermolecular forces, the higher the boiling point, the stronger the intermolecular forces. We can compare the strengths of intermolecular forces by comparing the boiling points of different substances.

Intermolecular forces are measured by boiling points.

Intermolecular forces increase as bond polarization increases.

Ionic > hydrogen bonding > dipole dipole > dispersion is the order of the strength of intermolecular forces (and thus their impact on boiling points).

Substances with strong intermolecular forces are very attracted to one another and are held together tightly. These substances require a great deal of energy to separate, whereas substances with weak intermolecular forces are held together very loosely and have weak interactions.

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Answer: D.kinectic energy

Explanation

Answer:

b

Explanation:

B.................................................................

Answer:

C

Explanation:

 i hope i helped you and have a nice day...

Avogadro's Number:

Avogadro's number, which is equal to 6.02214076 x \(10^{23}\), is the quantity of units in one mole of any material. Hence, 1 mole of HBrO3 will contain

6.02214076 x \(10^{23}\) atoms.

Then, 0.009567 mole of HBrO3 will contain

= 0.009567 moles x 6.02214076 x \(10^{23}\) atoms

=  0.0576138 x    \(10^{23}\)  atoms = 5.761 x \(10^{21}\) atoms.

Hence, 0.009567 mole of HBrO3 will contain 5.761 x \(10^{21}\) atoms.

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Explanation:

1 As you go down a group, the atomic radius of the elements increases.

2 This trend is caused by the increase in the number of electron shells as you go down a group. As more electron shells are added, the distance of the outermost electrons from the nucleus increases, resulting in a larger atomic radius.

3 (a) S

(b) Na

(c) B

(d) Br

(e) Mg

(f) O

4 Ionization energy is the amount of energy required to remove an electron from an atom or an ion.

5 Sodium has a low ionization energy because its outermost electron is only weakly attracted to the nucleus. The electron is therefore relatively easy to remove, resulting in the formation of a 1+ ion. Magnesium, on the other hand, has a higher ionization energy because its outermost electron is more strongly attracted to the nucleus. It takes more energy to remove this electron, resulting in the formation of a 2+ ion.

6 (a) Li

(b) Na

(c) Cl

(d) Li

(e) Ca

(f) Ar

Ionization energy generally increases as you go across a row in the periodic table. This is because the electron shielding effect decreases and the nuclear charge increases as you go from left to right in a row. The electron is therefore more strongly attracted to the nucleus, requiring more energy to remove it.

The value of ΔG° at this temperature is -18034.18 J/mol

Calculation,

Given information

formation constant (Kf)= 1.7 × \(10^{7}\)

Universal gas constant (R) = 8.314 J/K• mol

Temperature = 25° C = 25 °C + 273 = 300 K

Formula used:

ΔG° = -RT㏑Kf

By putting the valur of R,T, Kf we get the value of ΔG°

ΔG° = - 8.314 J/K• mol×300K㏑ 1.7 × \(10^{7}\)

ΔG° = -2494.2㏑ 1.7 × \(10^{7}\) = -18034.18 J/mol

So, change in standard Gibbs's free energy is -18034.18 J/mol

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Answer:

Option B clearly shows the Products of the reaction

The hot pack has a 0.868 J/g°C heat capacity.

To solve this problem, we can use the formula:
q = mcΔT

where q is the heat transferred, m is the mass of the object, c is the specific heat capacity, and ΔT is the change in temperature.

First, let's find the heat transferred by the hot pack to warm up the water:
q = mcΔT
q = (30.0 g)(c)(85°C - 25°C)
q = 20400c J

Next, let's find the heat transferred by the hot pack to warm up the insulated pouch and the food:
q = mcΔT
q = (30.0 g)(c)(40°C - 25°C)
q = 450c J

The total heat transferred by the hot pack is the sum of these two values:
q total = 20400c J + 450c J
q total = 20850c J

Finally, we can use the heat transferred by the hot pack to solve for its specific heat capacity:
q total = mcΔT
20850c J = (30.0 g)(c)(85°C - 25°C) + (30.0 g)(c)(40°C - 25°C)
20850c J = 24000c J
c = 0.868 J/g°C

Therefore, the heat capacity of the hot pack is 0.868 J/g°C.

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Answer:

A- Before the mechanic left, the molecules were moving away from each other. When she returned, they were moving around each other.

Explanation:

Brainliest?

Answer:

Explanation:

Correct option is (D).

When human body bend at the elbow , then there is contraction of biceps.

After this there is relaxation of biceps and on other hand the triceps contracts so that elbow is straightened.

The statement that is true is bending of arms involves the contraction and relaxation of a pair of muscles. The correct option is D.

The process of shortening the sarcomere and, consequently, the whole myocyte during muscle contraction involves the sliding of the thin filaments through the thick filaments.

The tendon transfers the ensuing longitudinal tension from the extracellular matrix (ECM) to the bone. An Action Potential that travels from the nerves to the muscles causes a muscle contraction. The neurological system sends a signal, which triggers the onset of muscle contraction.

The biceps contract whenever the human body bends at the elbow. Following this, the triceps contract while the biceps relax, causing the elbow to straighten.

Therefore, the correct option is D. Bending of arms involves the contraction and relaxation of a pair of muscles.

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The theoretical oxygen demand for the discharge of 100 mg/L of glycine can be calculated using the following formula:

Theoretical oxygen demand = (mass of glycine / molecular weight of glycine) * stoichiometric oxygen demand

First, we need to determine the stoichiometric oxygen demand for glycine. The chemical reaction for the oxidation of glycine is:
CH2(NH2)COOH + 3O2 → 2CO2 + 2H2O + NH3

From this reaction, we can see that 3 moles of oxygen are required to oxidize 1 mole of glycine. Therefore, the stoichiometric oxygen demand for glycine is 3.
Next, we need to convert the mass of glycine from mg/L to g/L:
100 mg/L = 0.1 g/L

Now we can plug in the values into the formula:
Theoretical oxygen demand = (0.1 g/L / 75 g/mol) * 3 = 0.004 g/L

Therefore, the theoretical oxygen demand for the discharge of 100 mg/L of glycine is 0.004 g/L.

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Answer: You would need 1 mole of Fluorine

Explanation:The equation is already balanced so just looking at the coefficients in the equation we can see that Sodium Chloride (2NaCl) needs two moles for this equation and fluorine (F2) only needs one.

In order for the reaction to proceed, for every two moles of sodium chloride, there must be at least  1 mole for fluorine.

2NaCl +  F₂ → 2NaF + Cl₂

The reaction given above is balanced. When 2 moles of sodium chloride reacts with 1 mole of fluorine produces 2 moles of sodium fluoride and 1 molecule of chlorine.

Thus, two moles of sodium chloride, there must be at least  1 mole for fluorine.

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Answer:

ZnBr2

Explanation:

KNO3 + LiOH -------> no reaction

This is because KNO3 and LiOH completely ionize.in water and form neutral solutions.Since both are neutral no reaction occurs

NH4Cl + LiOH -----> NH3 (aq) + H2O (l) + LiCl(aq)

None of the above products are precipitates

Ca(C2H3O2)2 + 2LiOH -----> Ca(OH)2 (aq) + 2LiC2H3O2 (aq)

ZnBr2 + 2LiOH -----> Zn(OH)2 (s) + LiBr2 ( aq)

Zn(OH)2 thus formed is a white precipitate

However when excess LiOH is added Zn(OH)2 precipitate will dissolve to give a clear solution of Li2ZnO2 .

You can remember this by the fact that Na,K,Rb,Cs,Ca,Sr,Ba hydroxides are soluble in water and all other hydroxide are precipitated in water

Zn(OH)2 (s) + 2 LiOH ------> Li2ZnO2(aq) + 2 H2O ( l)

The only compound that will form a precipitate with LiOH would be ZnBr2

These are double displacement reactions in which precipitates are produced. Precipitates are insoluble solids formed from the combination of ions in aqueous solutions.

In this case, a reaction between LiOH and ZnBr2 would be as follows;

2LiOH + ZnBr2 ----------> 2LiBr + Zn(OH)2 (s)

Zn(OH)2 is an insoluble salt and will precipitate out in the solution.

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Answer:

C. The third option

Explanation:

Answer:

The electrons are supplied by the species getting oxidized. They move from anode to the cathode in the external circuit. The external battery supplies the electrons. They enter through the cathode and come out through the anode

The electrons are supplied by the species getting oxidized. They move from the anode to the cathode in the external circuit.

An electron is a negatively charged subatomic particle.

The reaction at the anode is oxidation and that at the cathode is reduction. Here, the anode is positive and the cathode is the negative electrode. The reaction at the anode is oxidation and that at the cathode is reduction.

The electrons are supplied by the species getting oxidized. They move from the anode to the cathode in the external circuit. The external battery supplies the electrons. They enter through the cathode and come out through the anode.

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