Answer:
30 g. 8'C
Explanation:
the 10 g is plus the fact that I have to help you get the chance to get the answer
Answer:
Explanation:
From the given information:
mass = 3.42 kg = 3420 g
molar mass of = 59 g
Number of moles of
Number of moles of
= 57.966
number of hydrogen atoms present =
where;
number of hydrogen atoms present
Answer:
It has 4 significant figures
Explanation:
Notice the use of scientific notation to indicate that there are two zeros which should be significant. If this number were to be written without scientific notation (3,200,000,000) the significance of those two zeros would be lost and you would - wrongly - say that there were only two significant figures.