'cises
2. Answer the following questions.
A. State and explain Avogadro's law. Po 6
B. Point out the difference between 12 g of
carbon and 12 u of carbon
C How many grams does an atom of
hydrogen weigh?
D. Calculate the molecular mass of the
following in u.
a. NH, b. CH.COOH c. C,H,OH
Answers
Explanation:
Avogadro's law, a statement that under the same conditions of temperature and pressure, equal volumes of different gases contain an equal number of molecules. ... The law is approximately valid for real gases at sufficiently low pressures and high temperatures.
Difference between 12 gram of carbon and 12 unified mass of carbon: 12 gram of carbon means a mole of carbon while 12 unified mass of carbon means that the molar mass of carbon is 12g and that 12g of carbon make up one mole. It means that 1 mole or 12 u of carbon contain 6.023×1023 carbon atoms.
The weight of 1 atom of hydrogen will be 1.66×10−24g. Note: The molar mass of a molecule will be different from the molar mass of an atom of the same element.
4th question is on the attachment hope it helps Mark as brainlliest pls plspls
A. Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules." For a given mass of an ideal gas, the volume and amount (moles) of the gas are directly proportional if the temperature and pressure are constant.
B. 12g is the GRAM ATOMIC weight of carbon while 12u is the ATOMIC weight of carbon which is equal to 12*1.66*10^-24g.
C. The weight of 1 atom of hydrogen is calculated as 1.66058 × grams.
D. a) NH
Atomic mass of N = 14
Atomic mass of H = 1
Molecular mass of NH = 14 + 1 = 15u
b) CH.COOH
Atomic mass of C = 12
Total carbon atoms = 2
Total atomic mass of carbon atoms = 12 x 2 = 24u
Atomic mass of H = 1 X 2 = 2u
Atomic mass of O = 16 X 2 = 32u
Total molecular mass = 2 + 24 + 32 = 58u
c) C,H,OH
C => 12u
H => 1 x 2 = 2u
OH => 16 + 1 => 17
Total => 12 + 2 + 17 => 21u