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3 years ago

There were 6 students in the class wearing white sneakers. This would be an example of an observation that is

Chemistry

1 answer:

Rus_ich [418]3 years ago

3 0

Answer:

Explanation:

It's neither qualitative and quantitative. Qualitative is speculation on quality, and quantitative is speculation on quantity, or the amount of something.

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Gasoline tanks are usually white or some other light color, like yellow or green. Gasoline tanks are not painted black. Why are

eimsori [14]

It is the first option bc if it absorbed heat it it will pressurize and could explode.

4 0

3 years ago

Read 2 more answers

What is the sum of protons and neutrons in an atomic nucleus?

Archy [21]

It is the atomic number. So it is D.

6 0

3 years ago

What is the ph of a 0.15 m solution of ammonium bromide?

pochemuha

NH3 + H20 YIELDS NH4+ + OH-

So, the NH3 and the OH- are stoichiometrically equivalent.

So, we have 0.15M OH-

p OH = -log [OH-]

p OH = -log[0.15) = 0.824

pH = 14 - p OH

pH = 13.18

5 0

3 years ago

4. How many moles of Cl2, are obtained by the<br> decomposition of 6.3 moles of POCI3?

tia_tia [17]

Answer:

6.3moles

Explanation:

The balanced chemical equation for the decomposition of phosphorus oxychloride (POCl3) is as follows:

POCl3 → POCl + Cl2

Based on the above decomposition reaction, it shows that;

1 mol of POCl3 will decompose to give 1 mole of Cl2

Hence, 6.3 moles of POCI3 will give 6.3 moles of Cl2.

4 0

3 years ago

The Solubility Product Constant for calcium bromide is > 1. If calcium bromide is dissolved in water you can say that the equ

DiKsa [7]

Answer: (1). If calcium bromide is dissolved in water you can say that the equilibrium concentrations of calcium and bromide ions are high.

(2). The solubility of calcium bromide in water is high.

Explanation:

We know that for a reaction its solubility product is equal to the product of concentration of ions present.

For example, $CaBr_{2} \rightarrow Ca^{2+} + 2Br^{-}$

$K_{sp} = [Ca^{2+}][Br^{-}]^{2}$

As it is given that for this reaction $K_{sp}$ > 1. Hence, the product of concentration of both these ions will be greater than 1 which means that products are favored.

Therefore, equilibrium concentrations of calcium and bromide ions are high.

Also, more is the number of these ions formed more will be the solubility of the compound ( $CaBr_{2}$ ).

As a result, the solubility of calcium bromide in water is high.

7 0

4 years ago