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3 years ago

What happens to water when it changes to ice?

Chemistry

2 answers:

Elenna [48]3 years ago

7 0

Answer:

Its density decreases.

Its volume increases.

Explanation:

There are two changes that happen:

Its density decreases.

Its volume increases.

When the density is less, this is why ice floats on water. Density is calculate by mass/volume. Now mass is same here as we have not added anything here, this means that volume must have changed. Hence, the volume increases that makes the ice less dense.

mariarad [96]3 years ago

5 0

Density decreases that's why ice floats on water because it's less dense than water.

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What happens to the density of most substances as they cool and solidify?

Elodia [21]

The density increases as the substance cools.

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4 years ago

What solubility a measure of

Debora [2.8K]

Solubility: the ability for a given substance (the solute) to dissolve in a solvent. It is measured in terms of the maximum amount of solute dissolved in a solvent at equilibrium

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4 years ago

What is the mass of 1 mole of lithium?

Korolek [52]

Answer: The mass of 1 mole of lithium is 6.941 grams.

Explanation:

To calculate the mass of a compound or element, we use the formula used to calculate the number of moles:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Where,

Number of moles of lithium = 1 mole

Given mass of lithium = ? g

Molar mass of lithium = 6.941 g/mol

Putting value in above equation, we get:

$1mole=\frac{\text{Given mass}}{6.941g/mol}\\\\\text{Mass of lithium}=6.941g$

Hence, the mass of 1 mole of lithium is 6.941 grams.

5 0

3 years ago

Read 2 more answers

Given the equilibrium: A+B <--> C. The greatest concentration of C would be produced if the equilibrium constant of the re

Ad libitum [116K]

Answer: The greatest concentration of C would be produced if the equilibrium constant of the reaction is equal to $1\times 10^9$

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_c$

For the given chemical reaction:

$A+B\rightarrow C$

The expression for $K_c$ is written as:

$K_c=\frac{[C]}{[A][B]}$

Thus higher is the value of $K_c$ , higher will be the concentration of C. Thus the greatest concentration of C would be produced if the equilibrium constant of the reaction is equal to $1\times 10^9$

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3 years ago

Sweat is made up of all EXCEPT what? * A.Sugar B.Salt C.Urea D.Urine

andreev551 [17]

D, Urine.

Just google what sweat is made of and it gives you all of the answers except for urine. Also you’d probably smell really bad if your sweat had urine in it. Hope this helps! :)

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3 years ago