<span>Avogadro's number
represents the number of units in one mole of any substance. This has the value
of 6.022 x 10^23 units / mole. This number can be used to convert the number of
atoms or molecules into number of moles. We do as follows:
0.24 g (1 mol / 342.3 g) (
6.022 x 10^23 molecules / 1 mol ) =4.222 x 10^20 molecules
</span>
Mass × velocity = momentum
74 x 15 = momentum
Answer:
Molecular formula = C₄H₆
Explanation:
Given data:
Molecular mass of compound = 54 g/mol
Empirical formula = C₂H₃
Molecular formula = ?
Solution:
Molecular formula:
Molecular formula = n (empirical formula)
n = molar mass of compound / empirical formula mass
Empirical formula mass = 12×2 + 3×1 = 27 g/mol
n = 54 / 27
n = 2
Molecular formula = n (empirical formula)
Molecular formula = 2(C₂H₃)
Molecular formula = C₄H₆
Answer:
The birth rate will be equal to the death rate because the population size stays the same.
Explanation:
