Answer:
the answer to the qustion is 0.013089701 na
Explanation:
n/a
Answer: Number of molecules of hydrogen gas 
Explanation:

Number of moles of sodium =
According to reaction , 2 moles of sodium produces 1 mole of hydrogen gas , then 2.11 mol of sodium will=
of hydrogen gas that is 1.05 moles of hydrogen gas.
Number of molecules =
moles of substance
Moles of hydrogen gas formed = 1.05 moles
Number of molecules of hydrogen gas =
moles of hydrogen gas
Number of molecules of hydrogen gas 
Answer:
left to right across a period when it decreases and when it increases top to bottom in a group,
hope i helped
Answer:
x² = mutiphy by them self
Explanation:
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