Answer:
5. the total density of the mixture = 3.415 x 10^3 g/mL
6. the number of sulfur atoms in the compound = 2 x 10^24
Step-by-step explanation:
5.
given:
density of a substance is 3.4 x 10^3 g/mL
Mixing it with another substance increases the density by 1.5 x 10^1 times.
find:
What is the density of the mixture?
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let density (a) = 3.4 x 10^3 g/mL
density(b) = 1.5 x 10^1 g/mL
since there is no specific density provided for the mixture, we then add both to increase the density,
total density = density(a) + density(b)
total density = 3.4 x 10^3 g/mL + 1.5 x 10^1 g/mL
total density = 3.415 x 10^3 g/mL
therefore,
the total density of the mixture = 3.415 x 10^3 g/mL
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6.
given:
A compound contains atoms of sulfur and iron.
There are 3.6 X 10^20 atoms of iron in the compound.
find:
Divide the no of iron atoms by 1.8 X 10^- 4 to find the number of sulfur atoms in the compound?
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iron = 3.6 x 10^20 ⇒ to divide 1.8 X 10^- 4
sulfur atoms = 3.6 x 10^20 = 2 x 10^24
1.8 X 10^- 4
therefore,
the number of sulfur atoms in the compound = 2 x 10^24
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