Pure water has the lowest freezing point among the others.
Answer:
Explanation:
Here, we want to calculate the number of formula units in the given molecule
We start by getting the number of moles
To get the number of moles, we have to divide the mass given by the molar mass
The molar mass is the mass per mole
The molar mass of calcium bromide is 200 g/mol
Thus, we have the number of moles as follows:
The number of formula units in a mole is:
The number of formula units in 0.2075 mole will be:
Answer:
d
Explanation:
e works, a and b one of them is stronger but it works d is the only logical answer
Question is incomplete, complete question is :
A fixed quantity of gas at 21°C exhibits a pressure of 758 torr and occupies a volume of 5.42 L .
Calculate the volume the gas will occupy if the pressure is increased to 1.89 atm while the temperature is held constant.
Answer:
The final volume of the gas will be 2.86 L.
Explanation:
initial pressure of the gas =
initial volume of the gas =
Final pressure of the gas =
Final volume of the gas =
Applying Boyle's law;
( at constant temperature)
The final volume of the gas will be 2.86 L.
the 2 next the H indicates that there is two H is one molecule
49.6