a neutral atom of chlorine (CI) has an average mass of 35 amu and 17 electrons. How many neutrons does it have?
2 answers:
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Answer:
and
Explanation:
Our goal for this question is the calculation of the number of moles of the molecules produced by the reaction of hydrazine () and <u>oxygen</u> (
). So, we can start with the <u>reaction</u> between these compounds:
Now we can <u>balance the reaction</u>:
In the problem, we have the values for both reagents. Therefore we have to <u>calculate the limiting reagent</u>. Our first step, is to calculate the moles of each compound using the <u>molar masses values</u> (32.04 g/mol for and 31.99 g/mol for
):
In the balanced reaction we have 1 mol for each reagent (the numbers in front of and
are 1). Therefore the <u>smallest value would be the limiting reagent</u>, in this case, the limiting reagent is
.
With this in mind, we can calculate the number of moles for each product. In the case of we have a <u>1:1 molar ratio</u> (1 mol of
is produced by 1 mol of
), so:
We can follow the same logic for the other compound. In the case of we have a <u>1:2 molar ratio</u> (2 mol of
is produced by 1 mol of
), so:
I hope it helps!
Answer:
<h2>0.93 g/mL</h2>Explanation:
The density of a substance can be found by using the formula
From the question
mass = 37.2 g
volume = 40 mL
We have
We have the final answer as
<h3>0.93 g/mL</h3>Hope this helps you