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2 years ago

What happens to water when it changes to ice?

Chemistry

2 answers:

Elenna [48]2 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]2 years ago

5 0

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

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An ionic bond is _?_

lubasha [3.4K]

It would be C, because Ionic bonds have to deal with valence electrons ( the outer shell ones)

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3 years ago

C4H10 + 02 ➡️ H20 + CO2<br> balance the equation

Alexeev081 [22]

(Can I have Brainlist)?

Answer:

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8 (4 moles CO2 per mole butane)

Explanation:

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2 years ago

A method used by the U.S. Environmental Protection Agency (EPA) for determining the concentration of ozone in air is to pass the

baherus [9]

Answer: 1. $9.08\times 10^{-6}$ moles

2. 90 mg

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According to stoichiometry:

1 mole of ozone is removed by 2 moles of sodium iodide.

Thus $4.54 \times 10^{-6}$ moles of ozone is removed by = $\frac{2}{1}\times 4.54 \times 10^{-6}=9.08\times 10^{-6}$ moles of sodium iodide.

Thus $9.08\times 10^{-6}$ moles of sodium iodide are needed to remove $4.54\times 10^{-6}$ moles of $O_3$

2. $\text{Number of moles of ozone}=\frac{0.01331g}{48g/mol}=0.0003moles$

According to stoichiometry:

1 mole of ozone is removed by 2 moles of sodium iodide.

Thus 0.0003 moles of ozone is removed by = $\frac{2}{1}\times 0.0003=0.0006$ moles of sodium iodide.

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2 years ago

One problem with elimination reactions is that mixtures of products are often formed. For example, treatment of 2-bromo-2-methyl

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Answer:

Structures are given below.

Explanation:

Treatment of 2-bromo-2-methylbutane with KOH in ethanol will give elimination of HBr through E2 mechanism.
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Structure of alkenes are given below.

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2 years ago

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arsen [322]

It would emit energy in most of the cases in form of light

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3 years ago

Read 2 more answers