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exis [7]
3 years ago
6

What is the empirical formula for a compound that contains 12.62% li, 29.17% s, and 58.21% o?

Chemistry
1 answer:
babymother [125]3 years ago
3 0
<span>Li2SO4, I have to have 20 characters so this is a thing</span>
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How many moles of lithium nitrate<br> (LINO3) are in 256 mL of a 0.855 M<br> solution?
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There are 0.219 mol of LINO3

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Determine if the data are qualitative or quantitative.
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A runner is traveling around the track below at a constant speed. Is she accelerating?
Black_prince [1.1K]

<h2>ANSWER:</h2>

D.No, she is not accelerating because her speed is constant.

<h2>EXPLANATION:</h2>

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3 years ago
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If there are 40 mol of NBr3 and 48 mol of NaOH, what is the excess reactant?
Nata [24]

Answer:

The correct answer is option B.

Explanation:

3NaOH+2NBr_3\rightarrow 3HOBr+3NaBr+N_2

Moles of NBr_3 = 40 mol

Moles of NaOH = 48 mol

According to reaction, 3 moles of NaOH reacts with 2 moles NBr_3

Then ,48 moles of NaOH will reacts with:

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Then ,40 moles of NaBr_3 will reacts with:

\frac{3}{2}\times 40 mol=60 mol of NaOH

As we can see that 48 moles of sodium will completey react with 32 moles of nitrogen tribromide.

Moles left after reaction = 40 mol - 32 mol = 8 mol

Hence, the NBr_3 is an excessive reagent.

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