Answer:
40 g/mol, Argon
Explanation:
We can find the number of moles of the gas by using the equation of state for an ideal gas:
where
is the pressure of the gas at STP
is the volume of the gas
n is the number of moles
is the gas constant
is the absolute temperature of the gas at STP
Solving for n, we find:
Now we can find the molar mass of the gas, which is given by
where
m = 5.28 g is the mass of the gas
n = 0.132 mol is the number of moles
Substituting,
So, the gas in this problem is Argon, which has a molar mass of 40 g/mol.
The element which can not loose electron easily and having electronagtive character is called non-metal it has following property-
1. it can not conduct heat and electricity
2. it is netiher ductile not malleable
3. it is not lsuturous and also not sonorous
Answer:
Does liquid HF conduct electricity?
Explanation:
HF is the precursor to elemental fluorine, F2, by electrolysis of a solution of HF and potassium bifluoride. The potassium bifluoride is needed because anhydrous HF does not conduct electricity.
Answer:
Number of neutrons in the nucleus.
Explanation:
Mass number is protons plus neutrons. Protons do not change from isotope to isotope
Answer:
Moles of silver produced = 2 mol
Steps taken = 3 steps
Explanation:
Given data:
Mass of copper = 64.8 g
Moles of silver produced = ?
Steps taken = ?
Solution:
Step 1:
Balance chemical equation:
Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag
Step 2:
Number of moles of Cu:
Number of moles = mass/ molar mass
Number of moles = 64.8 g/ 63.546 g/mol
Number of moles = 1.0 mol
Step 3:
Now we will compare the moles of Ag with Cu from balance chemical equation:
Cu : Ag
1 : 2
Moles of silver will produced:
2 moles