Answer:
1406 balloons
Explanation:
First of all, we calculate the number of moles of helium gas contained in the 25.0 L cylinder, by using the equation of state for an ideal gas:
where
p = 132 atm is the pressure
V = 25.0 L is the volume
is the gas constant
is the temperature
Solving for n, we find the number of moles:
Now we can find using the same equation how many moles of gas can be contained in 1 balloons, which has:
V = 2.50 L (volume)
is the pressure
is the temperature
Therefore,
So, the total number of balloon that can be filled is:
Answer:
you know just in order to bring that nostalgia into chemists minds
Explanation:
Energy needed : Q = 1105.5 J
<h3>Further explanation</h3>
Given
mass = 55 g
Temperature from -10°C to 0°C
Required
Energy
Solution
Heat can be calculated using the formula:
Q = mc∆T
Q = heat, J
m = mass, g
c = specific heat, joules / g ° C
∆T = temperature difference, ° C / K
Input the value :
Q = 55 g x 2.01 J/g ° C x (0-(-10))
Q = 1105.5 J
