Given that a 20.00 g milk chocolate bar contains 12.00 g of sugar, calculate the percentage of sugar present in 20.00 g of milk chocolate bar keeping in mind that the answer should have four significant figures

Answer : The percentage of sugar present in milk chocolate bar is 60.00 %

Explanation:

We are given:

Mass of milk chocolate bar = 20.00 g

Mass of sugar = 12.00 g

To calculate the percentage of sugar present in milk chocolate bar, we use the equation:

Putting values in above equation, we get:

Hence, the percentage of sugar present in milk chocolate bar is 60.00 %

the answer is   c.) 1575 j.

explanation:

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.