Answer:
First you multiply the number of atoms by the atomic mass of the element.This gives you the molar mass. Then you divide the molar mass by the number of grams in order to find the number of moles.
Hope this helps!
Answer:
Biotic factors are the living components of an ecosystem. They are sorted into three groups: producers or autotroph's, consumers or heterotrophs, and decomposers or detritivores.
Explanation:
To get a result with the best degree of precision, the
number of significant figures should be equal to the smallest number of
significant figures of the given numbers. In this case, the smallest is 3 as
given by the number 9.03 mL.
Therefore density is:
<span>11.50 g / 9.03 mL = 1.27 g/mL</span>
Answer:
0.52 grams
Explanation:
To find the molar mass of Ba(NO3)2, use the periodic table and the mass of each element. Remember to multiply based on the number of atoms there are.
137.33 + [14.01+16(3)] 2 = 261.35
Now solve...
0.002 mol Ba(NO3)2 * 261.35 g Ba(NO3)2/1 mol Ba(NO3)2 = 0.5227
