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nexus9112 [7]
2 years ago
11

When are igneous rocks formed?

Chemistry
1 answer:
balandron [24]2 years ago
3 0

Answer:

C. When melted rock solidifies.

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The density of a 22.0% by mass ethylene glycol (c2h6o2) solution in water is 1.04 g/ml . part a find the molarity of the solutio
julsineya [31]

Answer:- 3.68M.

Solution:- We have a 22.0% by mass solution of ethylene glycol and it's density is 1.04 gram per mL. It ask to calculate the molarity of the solution. We know that molarity is moles of solute per liter of solution. So, we need to figure out the moles of ethylene glycol and volume of solution.

Let's say we have 100 grams of the solution. Then mass of ethylene glycol would be 22.0 grams. Molar mass of ethylene glycol is 62.07 gram per mol.

Let's calculate it's moles first:

22.0gC_2H_6O_2(\frac{1mol}{62.07g})

= 0.354molC_2H_6O_2

From mass and density we calculate the volume of the solution and convert it to liters as:

100g(\frac{1mL}{1.04g})(\frac{1L}{1000mL})

= 0.0962 L

molarity=\frac{0.354mol}{0.0962L}

= 3.68M

So, the molarity of ethylene glycol solution is 3.68M.

4 0
3 years ago
Does a falcon eat a lizard
crimeas [40]

Answer:

yes

Explanation:

The most common prey item is pigeons. Peregrine falcons will also eat small reptiles and mammals.

5 0
3 years ago
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What are the correct coefficients for the reaction below:
77julia77 [94]

C was the answer i had and it was right


7 0
3 years ago
What must ALWAYS be used to convert between quantities of two different chemical substances?
Vedmedyk [2.9K]

Answer:

Balanced equations and mole ratios

In general, mole ratios can be used to convert between amounts of any two substances involved in a chemical reaction.

Explanation:

yw

3 0
2 years ago
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stomach acid contains dilute hydrochloric acid write a chemical equation to show the neutralization of stomach acid by milk of m
Eddi Din [679]

Answer:

Mg(OH)2(s) + 2HCl(aq) → 2H2O(l) + MgCl2(aq)

Explanation:

4 0
3 years ago
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