Question

Формула вещества C6H6 Молярная масса М(х) = г/ моль ????? Масса 234 г Кол во вещества n= моль ?????? Объем газа V= л ???? Количество молекул N ?????? Формула вещества So2 Молярная масса M(x)=г/ моль ????? Масса m=r ????? Количество вещества n=моль ????? Объем газа V=л 0.336 Количество молекул N ?????

Answer 1

Ответ смотри на фотографии.

Answer 2

To solve the given problems, we need to use the relationship between mass, molar mass, amount of substance (moles), and the number of molecules for each substance.

1. Formula: C6H6 (Benzene) Molar Mass, M(х): ? Mass, m: 234 g Amount of substance, n: ? Volume of gas, V: ? Number of molecules, N: ?

To find the molar mass of C6H6 (Benzene), we add up the atomic masses of each element in the formula: C(6) = 6 * atomic mass of carbon H(6) = 6 * atomic mass of hydrogen

Using the atomic masses from the periodic table (approximate values): Atomic mass of carbon (C): ~12 g/mol Atomic mass of hydrogen (H): ~1 g/mol

Molar mass of C6H6 = (6 * 12 g/mol) + (6 * 1 g/mol) = 72 g/mol + 6 g/mol = 78 g/mol

Now, we can calculate the amount of substance (moles) using the formula: n = m / M n = 234 g / 78 g/mol ≈ 3 moles

The volume of gas, V, is not provided, so we can't calculate it at this point.

To find the number of molecules, N, we use Avogadro's constant, which is approximately 6.022 x 10^23 molecules per mole. N = n * Avogadro's constant N = 3 moles * 6.022 x 10^23 molecules/mol ≈ 1.8066 x 10^24 molecules

2. Formula: SO2 (Sulfur dioxide) Molar Mass, M(x): ? Mass, m: r (The value of "r" is not given, so we can't calculate this without additional information.) Amount of substance, n: ? Volume of gas, V: 0.336 L Number of molecules, N: ?

To find the molar mass of SO2 (Sulfur dioxide), we add up the atomic masses of each element in the formula: S(1) = 1 * atomic mass of sulfur O(2) = 2 * atomic mass of oxygen

Using the atomic masses from the periodic table (approximate values): Atomic mass of sulfur (S): ~32 g/mol Atomic mass of oxygen (O): ~16 g/mol

Molar mass of SO2 = (1 * 32 g/mol) + (2 * 16 g/mol) = 32 g/mol + 32 g/mol = 64 g/mol

The mass, m, is given as "r" which doesn't have a specific value, so we can't calculate the amount of substance (moles) without knowing the mass value.

To calculate the amount of substance (moles) when the mass, m, is provided, we use the formula: n = m / M

If you provide the specific value of "r" for the mass of SO2, I can help you calculate the amount of substance and the number of molecules.