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devlian [24]
3 years ago
6

What is the mass percentage of calcium in calcium carbonate CaSO4?

Chemistry
1 answer:
pav-90 [236]3 years ago
3 0
40.04% yep I’m sure
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13) 2.4 L to mL<br> This is for chemistry
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Explanation:

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Ethical Behavior Worksheet Situation 1. You are taking a very difficult chemistry course, which you must pass to maintain your s
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Answer:

I would not accept it.

Explanation:

Although it is tempting to accept the janitor's offer and save the scholarship, which is not easy to get, I would not accept his offer, as I do not believe in victories based on dishonesty and would be heavy on conscience if I did the opposite. Obviously, I would not like to lose my scholarship and for that reason, I would look for other ways that would be honest and help me improve my grade. If I could not improve and lose the scholarship, I would be extremely sad, but I would be at peace with my conscience.

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3 years ago
Identify the mole ratio of water to sodium metal? Determine the number of moles of Sodium that reacted and determine the number
frozen [14]

Number of moles of sodium reacted is 2 moles. 0.04598 Kg is the mass of sodium that reacted.

Mole fraction is 1 mole ratio is 1:1

Explanation:

Balanced chemical reaction:

2 Na + 2H20 ⇒ 2NaOH + H2 (gas)

atomic mass of sodium = 22.99 g/mol

from the reaction it can be seen that 2 moles of sodium reacted to form 2 moles of sodium hydroxide soluition.

The mass of sodium reacted can be calculated from the formula:

mass = atomic mass of one mole x number of moles

mass = 22.99 x 2

         = 45.98 grams is the mass of sodium, to convert it into kilograms it is divided by 1000

= 0.04598 Kg is the mass of sodium that reacted.

Mole fraction formula is:

\frac{moles of solute}{moles of solution} = mole fraction   ( solute Na = 2 moles, solution is NaOH =2 moles)

putting the values:

\frac{2}{2}

= 1 mole ratio is 1:1

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2 years ago
What are some Chemical Processes that Changed Society?
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3 years ago
Read 2 more answers
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