3 years ago

Which statement describes the relationship between minerals and rocks?

1 answer:

6 0

Answer:

Minerals and rocks are the same aggregates of minnerals form rocks . Minerals determines the mixture of a rock . most rocks are made of a single mineral type .

Explanation:

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Paul determines that the hydrogen ion concentration of his unknown solution is 3.60×10^-5 M. what is the pH of this solution?

vivado [14]

Answer:

Explanation:

The pH of a substance can be found by using the formula

$p H = - log[ H^{ + } ]$

where [ H+ ] is the hydrogen ion concentration of the solution

From the question

[ H + ] = 3.60 × 10^-5 M

So the pH is

$pH = - log(3.60 \times {10}^{ - 5} ) \\ =4.44369749923$

We have the final answer as

Hope this helps you

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3 years ago

Balance this equation---> Fe(s)+O2(g)--->FeO(s)<br> (s) = solid<br> (g)= gas

allsm [11]

To balance this equation simply place the coefficient 2 in front of both the iron metal and the iron II oxide FeO.

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3 years ago

During an experiment, the percent yield of calcium chloride from a reaction was 82.38%. Theoretically, the expected amount shoul

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Answer:

Actual yield = 86.5g

Explanation:

Percent yield = 82.38%

Theoretical yield = 105g

Actual yield = x

Equation of reaction,

CaCO₃ + HCl → CaCl₂ + CO₂ + H₂O

Percentage yield = (actual yield / theoretical yield) * 100

82.38% = actual yield / theoretical yield

82.38 / 100 = x / 105

Cross multiply and make x the subject of formula

X = (105 * 82.38) / 100

X = 86.499g

X = 86.5g

Actual yield of CaCl₂ is 86.5g

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Bill Nye: Chemical Reactions

anygoal [31]

Dang don’t know I need my answer

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2 years ago

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When you heat an air-filled balloon, what happens inside with regard to the movement of air molecules?

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They heat up which helps the balloon fly

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4 years ago