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Sindrei [870]
3 years ago
12

A cube of butter weighs .254 pounds and has a volume of 129.4 milliliters what is the density

Chemistry
1 answer:
ira [324]3 years ago
4 0
Density = Mass/Volume

d = .254/129.4
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What mass of CaSO3 must have been present initially to produce 14.5 L of SO2 gas at a temperature of 12.5°C and a pressure of 1.
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When the reaction equation is:

CaSO3(s) → CaO(s) + SO2(g)

we can see that the molar ratio between CaSO3 & SO2 is 1:1 so, we need to find first the moles SO2.

to get the moles of SO2 we are going to use the ideal gas equation:

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R ideal gas constant = 0.0821

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