Consider a sample of helium and a sample of neon, both at 30.0°C and 1.5 atm. Both samples have a volume of 5.0 liters. Which st
atement concerning these samples is not true? Consider a sample of helium and a sample of neon, both at 30.0°C and 1.5 atm. Both samples have a volume of 5.0 liters. Which statement concerning these samples is not true? A) Each sample weighs the same amount.
B) The density of the neon is greater than the density of the helium.
C) Each sample contains the same number of atoms of gas.
D) Each sample contains the same number of moles of gas.
E) none of the above
Using the ideal gas equation, we can calculate the number of moles present. I.e
PV = nRT
Since all the parameters are equal for both gases, we can simply deduce that both has the same number of moles of gases.
The relationship between the mass of each sample and the number of moles can be seen in the relation below :
mass in grammes = molar mass in g/mol × number of moles.
Now , we have established that both have the same number of moles. For them to have the same mass, they must have the same molar masses which is not possible.
An Arrhenius base is a substance that dissociates in water to form hydroxide (OH–) ions. In other words, a base increases the concentration of OH– ions in an aqueous solution.
The statements that explains this phenomenon are: 1) DNA contains adenine as one of its nitrogenous bases. 2) DNA has a double-stranded structure that ensures an accurate mechanism of duplication.
