convert 1295 cm2 to m2

Answer:

That means we do not need to use chemical reactions to separate them. ... The one liquid component in milk is water, and the other is fatty oil. ... Identify the type of substances (solid, liquid or gas) that are mixed in each

Explanation:

Answer:

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Explanation:

The mixture of clay or sand with water is muddy. The small clay particles become suspended in the water. This kind of mixture is called a suspension. Suspensions are opaque; that means they are cloudy and we cannot see through them very well.

Answer:

the median is 14 the range is 15 the mode is 14 and the mean is 12.7

Explanation:

for the median you put all numbers is order but least to greatest and figure out the middle number for range you take the smallest and the biggest number and subtract them for mode you use the most repeated number and for the mean you add all the numbers and divide by the total of numbers I hope this helped

To solve this problem, I'll need some additional information related to the molar mass of butane (C4H10). Please provide the molar mass of butane so that I can proceed with the calculations.

Answer

E. Food flavoring

Explanation

Aldehydes are a potent class of flavor chemicals which make important contributions to the flavor effect in a wide range of fresh and prepared food products from fruits, spices, roasted and baked goods to vegetables.

Answer:

2219.945

Explanation:

861.62/101.323 = 8.5

261.17 x 8.5 = 2219.945

Answer:

0.98 M

Explanation:

Given data:

Mass of sugar = 20 g

Mass of water = 59 g

Concentration of solution = ?

Solution:

1 g = 0.01 L

59 g× 0.01 L/1 g

0.059 L

Concentration formula:

C = m/v

m = moles of solute

v = volume of solution

Number of moles of sugar:

Number of moles = mass/molar mass

Number of moles = 20 g/ 342.3 g/mol

Number of moles = 0.058 mol

Now we will calculate the concentration:

C = 0.058 mol/0.059 L

C = 0.98 mol/L

C = 0.98 M

Heterozygous dominant means that one inherited allele is dominant and one is recessive.

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Answer:

Wadding is a disc of material used in guns to seal gas behind a projectile or to separate powder from shot. ... Wadding for muzzleloaders is typically a small piece of cloth, or paper wrapping from the cartridge.

Explanation:

Answer:

Explanation:

Here, we want to get the number of moles of glucose in 0.5L of 0.4 M solution

Firstly, we need to recall that concentration or molarity is of the unit mol/dm^3

Mathematically, 1L is 1 dm^3 , thus, we have it that 0.4M is the same as 0.4 mol/dm^3

Now, to get the number of moles from molarity, we have to multiply the molarity by the volume

We have that as:

Answer:

2AgNO, K Cro-> 2KNO; 1Cro,

Most chemical reactions involve the breaking and formation of chemical bonds. It takes energy to break a chemical bond but energy is released when chemical bonds are formed. If more energy is released than consumed, then the chemical reaction evolves heat and is said to be exothermic.

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Answer:

Most chemical reactions involve the breaking and formation of chemical bonds. It takes energy to break a chemical bond but energy is released when chemical bonds are formed. If more energy is released than consumed, then the chemical reaction evolves heat and it called exothermic.

One of the oxygen atoms in the anion O3− is hypervalent and the formal charge on this oxygen atom is -1.

Ozone is a triatomic molecule. The anion formed from ozone is called the ozonide anion. This anion is also triatomic. The resonance structures of the ozonide anion are shown in the image attached to this answer.

We can see that one of the oxygen atoms in the ozonide ion is hypervalent because it contains ten instead of eight electrons. This hypervalent oxygen atom has a formal charge of -1 while the two other oxygen atoms has a formal charge of zero.

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Answer: B

Explanation: Anything that has mass and takes up space

Answer:

nm, dm, km, m

Explanation:

1 nanometer = 1e-12 (0.000000000001) kilometers

1 decimeter = 1e-4 (0.0001) kilometers

1 kilometer = 1 kilometer

Regardless of whether 'm' stands for mile or meter, it's still larger than all of these being approx. 1.61 and 1e-3 (0.001) kilometers respectively.

in the future, please provide the exact units.

Such as:

nanometers, decimeters, kilometers, meters

Answer and Explanation

(a) At constant temperature and volume the pressure of a gas is directly proportional to the number of moles of gas.

P = n (RT/V) where P is the pressure, n is the number of moles, R is the gas constant, T is the temperature and V is the volume

So when the pressure in increased, the volume will be decreased, meaning there will be less space in the container, this will lead to more collisions inside a container, meaning, the number of moles will be increased.

(b) Given: initial number of moles (n1) = 4.0 moles

initial pressure (P1) = 1.6 atm

Final number of moles (n2) = 3.0 moles

Required: Final Pressure (P2)

solution

P1/n1 = P2/n2

P2 = P1*n2/n1

P2 = 1.6 atm*3.0 moles/4.0 moles

P2 = 1.2 atm

Answer:

C.

Explanation:

The hand was touching the pan, which was hot, so the human reacted to it by putting the hand away from the pan.

Answer:

what are the following statements?

Explanation:

114.5 g is the total mass of the beaker .

Total mass of beaker=53.10g+5.348g+ 56.1g

Total mass=114.5 g

Mass is used in physics to specific inertia, a fundamental function of all remember. basically, it's far a mass of rely's resistance to changing its course or pace in response to the software of a force.

The exchange that an applied force produces is smaller the extra mass a body has. The kilogram, the unit of mass within the international machine of gadgets, corresponds to 6.62607015 1034 joule seconds using Planck's consistent (SI). One joule is produced by way of multiplying one kilogram by means of one rectangular meter per 2d.

The kilogram is decided by genuine measurements of Planck's regular on account that the second one and the meter have formerly been described in phrases of other bodily constants.

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The balanced NET ionic equation for the reaction when (NH₄)₂CO₃  and CaCl₂ are mixed in aqueous solution.

  Ca²⁺(aq)  +   CO₃²⁻(aq)     --->   CaCO₃(s)

The reaction is :

(NH₄)₂CO₃        +    CaCl₂  ----->    NH₄Cl      +    CaCO₃

1) the balanced molecular eqaution :

(NH₄)₂CO₃(aq)     +    CaCl₂(aq)  ----->    2NH₄Cl(aq)      +    CaCO₃(s)

2) split strong electrolytes into ions : complete ionic equation

2NH₄⁺  +  CO₃²⁻   +   Ca²⁺   +   2Cl⁻  ----->    2NH₄⁺    +   2Cl⁻  +  CaCO₃

3) eliminate the spectator ions on both sides of ionic equation:

CO₃²⁻(aq)   +   Ca²⁺(aq)  --->   CaCO₃(s)

4) The net ionic equation is :

Ca²⁺(aq)  +   CO₃²⁻(aq)     --->   CaCO₃(s)

Thus, The balanced NET ionic equation for the reaction when (NH₄)₂CO₃  and CaCl₂ are mixed in aqueous solution.

  Ca²⁺(aq)  +   CO₃²⁻(aq)     --->   CaCO₃(s)

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The mass percent of water in IrBr₃･4 H₂O is  14.4%.

To find the mass percent of water in  IrBr₃･4 H₂O, first determine the mass of water present in the compound and then divide it by the total mass of the compound and multiply by 100 to express the answer as a percentage.

Let's assume that the molecular weight of IrBr3•4 H2O is 500 g/mol. In that case, the mass of water present in the compound would be 4 x 18 g/mol (the molecular weight of water) = 72 g. The total mass of the compound is 500 g, so the mass percent of water in  IrBr₃･4 H₂O can be calculated as follows:

(72 g / 500 g) x 100 = 14.4%

So, the mass percent of water in IrBr₃･4 H₂O is 14.4%.

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Answer and Explanation:

V1/n1 = V2/n2

450.0 mL / 0.0184 mol = 200.0 mL / n2

n2 = 8.17X10^-3 mol

moles removed = 0.0184-8.17X10^-3 = 0.0102 mols removed, I think I'm right but I'm not 100% sure..

According to Avogadro's law, 0.008 moles of gas must be removed to shrink balloon to 200 ml.

Avogadro's law is a gas law which states that the total number of atoms or molecules has a direct proportion to the volume occupied by a gas at a constant temperature and pressure.

It is closely related to ideal gas equation as it links temperature, pressure, volume and the amount of substance.It is given as, V∝n,

The straight line graph of volume versus moles is a straight line passing through the origin which implies that zero moles of gas occupy zero volume.

Here, the number of moles is calculated as, V₁/n₁=V₂/n₂

Therefore on substitution, n₂=0.0184×200/450=0.008 moles.

Thus,0.008 moles are required to shrink  the balloon to 200 ml.

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The structural formula of butanol is C4H9OH. It consists of a chain of four carbon atoms, with a hydroxyl (-OH) group attached to one of the carbon atoms. Butanol has several structural isomers, which have the same molecular formula but different structural formulas.

A structural isomer is a compound that has the same molecular formula as another compound but has a different arrangement of its atoms. A string of 4 C atoms are bonded above, below, left, and right to H, except the second C, which is bonded below to O, which is bonded below to H is a structural isomer of butanol.

This is called butan-2-ol. The structural formula of butan-2-ol is CH3CH(OH)CH2CH3. In this isomer, the hydroxyl group is attached to the second carbon atom in the chain, whereas in butanol, the hydroxyl group is attached to the first carbon atom in the chain.

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Answer:

, containing 2.65 X 1020 molecules.

Explanation:

The mass of a sample of fruit sugar (fructose) C₆H₁₂O₆, containing 2.65 ×10²⁰ is equal to 2.88 g.

Avogadro’s number can be defined as the number of units in one mole of any chemical substance. Generally, these entities can be electrons, molecules, atoms, ions, or protons, depending upon the kind of chemical reaction or reactants and products.

The value of Avogadro’s constant is found approximately 6.022 × 10²³ mol⁻¹.

Given, the number of molecules of fructose = 2.65 ×10²⁰

The molar mass of the fructose = 180.16 g/mol

So 6.022 × 10²³ molecules of fructose have mass = 180.16 g

Then 2.65 × 10²⁰ fructose molecules will have mass = 2875.04 × 10⁻³ g

The mass of the  2.65 × 10²⁰ fructose molecules =  2.88 g

Therefore, the mass of  2.65 × 10²⁰ fructose molecules is equal to 2.88 g.

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Answer:

Explanation:

Here, we want to get the initial temperature of the copper piece

Mathematically:

The amount of heat lost or gained by any substance can be calculated as:

where:

m represents the mass

c represents the specific heat capacity (heat capacity of water is 4.184 J/g.C)

delta T represents the temperature change

Substituting the values, we have it that:

Answer:

A) Impacts around 4.5 billion years ago

Explanation:

The atomic weight of the element is 6.9408 amu.

The relative abundance of an isotope is defined as the percentage of atoms of a specific atomic mass that can be found in a naturally occurring sample of an element.

The atomic mass of the first isotope is 7.0150 amu.

The abundance of the first isotope is 92.58 %.

The atomic mass of the second isotope is 6.0150 amu.

The abundance of the second isotope is 7.42 %.

Now, abundance₁ = 92.58 % = = ( 92.58/ 100) = 0.9258

abundance₂ = 7.42 % = (7.42 / 100 ) = 0.0742

Therefore, the average atomic weight is:

Atomic mass = mass₁ × abundance₁ + mass₂ × abundance₂

Atomic mass = (7.0150) × (0.9258) + (6.0150) × (0.0742) amu

Atomic mass = 6.494487 + 0.446313 amu

Atomic mass = 6.9408 amu

The element's atomic weight is 6.9408 amu.

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Combining "hydro" and "genes" in the context of the Latin roots, we can interpret it as "water origin" or "water-related origin."

The term "hydro" in Latin means "water." It is derived from the Greek word "hydor," which also signifies water. "Hydro" is commonly used as a prefix in scientific terms related to water or hydrogen. In the context of chemistry, "hydro" often denotes a compound or process involving water or hydrogen atoms. For example, hydrocarbon refers to organic compounds composed solely of hydrogen and carbon atoms.

On the other hand, "genes" in Latin is derived from the Greek word "genos," which translates to "origin" or "birth." In biology, the term "genes" refers to the segments of DNA that contain instructions for the development and functioning of living organisms. Genes determine various traits, such as physical characteristics, behavior, and susceptibility to certain diseases. They play a fundamental role in the transmission of hereditary information from one generation to another.

This interpretation aligns with the understanding that hydrogen, which is essential for life and abundant in water, plays a vital role in various biological and chemical processes.

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Answer:

approximately 251.55 grams of AuCl3 would contain 5.0 x 10^23 molecules.

Answer: the pH of the given solution is 9.4 and the pOH is 4.6

Explanation:

The question requires us to calculate the pH and pOH values of an aqueous solution that presents a concentration of H+ ions of 3.6 x 10^-10 M.

By definition, the pH of a solution can be calculated applying the negative logarithm of the H+ ions in solution, as it follows:

(where [H+] corresponds to the concentration of H+ ions in solution)

Thus, we can determine the pH of the solution provided by the question as:

Therefore, the pH of the solution is 9.4.

Similarly, the pOH of a solution can be calculated as the negative logarithm of the OH- ions concentration in solution. Since the question does not provide the concentration of OH- ions, we can apply a different equation, which comes from the self-ionization of water.

The equilibrium constant for the self-ionization of water (a reaction where water dissociates into H+ and OH- ions) is 1.0 x 10^-14. Based on this, we can write that:

And, with the calculated value of pH (pH = 9.4), we can determine the pOH value of this solution:

Therefore, the pOH of the solution is 4.6.

In summary, the pH of the given solution is 9.4 and the pOH is 4.6.