Answer:
2 Cu2O + C = 4 Cu + CO2
Explanation:
CU2O has 2 coefficient
C has 1 coefficient
Cu has 4 coefficient
CO2 has 1 coefficient
Balance Equation 2 Cu2O + C = 4 Cu + CO2
Answer:
5.4 x 10²²molecules
Explanation:
Given parameters = 2L
Unknown; number of molecules
Condition of the water vapor is at standard Temperature and Pressure
Solution
To solve this problem, we simply find the number of moles the given volume would yield at STP using the relationship below:
Number of moles =
Number of moles = = 0.089mole
To find the number of molecules in the solved mole of the water vapor:
we use the avogadro's constant to evaluate.
1 mole of a water vapor = 6.02 x 10²³ molecules
0.089 mole of water vapor = 0.54 x 10²³molecules
Number of molecules of water is 5.4 x 10²²molecules
21: potassium has 20 neutrons
22: is d
Answer: 44.8 L
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number of particles.
Standard condition of temperature (STP) is 273 K and atmospheric pressure is 1 atm respectively.
To calculate the moles, we use the equation:
1 mole of occupies volume = 22.4L at STP
Thus 2 moles of magnesium react with=
Thus the volume of molecules of nitric oxide gas is 44.8 L.