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Sunny_sXe [5.5K]
3 years ago
6

Look at the periodic table. Find the element carbon. What is its symbol?

Chemistry
2 answers:
Sliva [168]3 years ago
6 0
A. ca is the answer because its short for carbon
VMariaS [17]3 years ago
6 0
THE ANSWER IS B. C
if you have a question like that just google it because the answer pops up really quick
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What sample size (grams) of Na3PO4 (FW 164.00) known to be 50.00% pure should be used to consume exactly 40.00 mL of 0.1000 M HC
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Answer:

0.109 g.

Explanation:

Equation of the reaction:

Na3PO4 + 3HCl --> 3NaCl + H3PO4

Number of moles of HCl = molar concentration × volume

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By stoichiometry, 1 mole of Na3PO4 neutralises 3 moles of HCl. Therefore, number of moles of Na3PO4 = 0.004/3

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= 0.219 g

Since 50% of Na3PO4 was present in the sample. Let 100 g be the total mass of the substance

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