There are 14.4 * 10^18 oxygen atoms in 5.0020 mg of strontium bicarbonate.
Mass of strontium bicarbonate Sr(HCO3)2 = 5.0020 mg
Molar mass of strontium bicarbonate Sr(HCO3)2 = 209.6537 g/mol
Number of moles of strontium bicarbonate Sr(HCO3)2 = 5.0020 * 10^-3g/209.6537 g/mol
= moles
Given that we have 6 oxygen atoms per molecule of Sr(HCO3)2, the total number of oxygen atoms in Sr(HCO3)2 becomes;
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I believe it’s A but I could be wrong
Answer:
3
Explanation:
troposphere
stratosphere
mesosphere
thermospjere
exosphere
this is from the lowest to highest
18
Pascal is the most common unit for measuring pressure
The average sea level pressure is 1013 mbar