Answer:
48.1 kPa
Explanation:
Data Given
initial volume V1 of oxygen gas = 250 mL
initial pressure P1 of oxygen gas = 114 kPa
final volume V2 of oxygen gas = 593 mL
final pressure P2 oxygen gas = ?
Solution:
This problem will be solved by using Boyle's law equation at constant Temperature.
The formula used
P1V1 = P2V2
As we have to find out Volume, so rearrange the above equation
P2 = P1V1 / V2
Put value from the data given
P2 = 114 kPa x 250 mL / 593 mL
P2 = 48.1 kPa
So the final pressure required = 48.1 kPa
Im sorry but its a pdf i can write on it :(
Answer:
Explanation:
Molecular mass of methanoic acid (HCOOH) = 2*1 + 1*12 + 2*16
=46 grams
mass of 1 mole of hydrogen atom = 1 g
mass of 1 mole carbon atom = 12 g
mass of 1 mole of oxygen atom = 16 g
mass of 1 mole of HCOOH = 46 g
1 mole of HCOOH molecule contains 1 mole of carbon atoms
means in 46 g of HCOOH there is 12 g of carbon atoms.
Percentage of carbon in methanoic acid =
2 qualitative: she measures the cupcakes and finds the difference and she estimated that she would get bigger cupcakes if she put more eggs quantitive: she sees that the cupcake with 3 eggs is 0.25 centimeters taller than the cupcake with 2 eggs and she did not get any more extra cupcake even though the cupcake with 3 eggs was taller
I think it is B for the answer
