Question

Дано: m(CuO) = 160кгс H2(CuO + H2 → H2O + Cu)m(Cu) = 100кгНайдите: n - ?

Answer 1

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Answer 2

To find the number of moles (n) of a substance, we can use the following formula:

n = m / M

where: n = number of moles m = mass of the substance in grams (g) M = molar mass of the substance in grams per mole (g/mol)

Given: m(CuO) = 160 kg (convert to grams: 160 kg * 1000 g/kg = 160,000 g) m(Cu) = 100 kg (convert to grams: 100 kg * 1000 g/kg = 100,000 g)

First, we need to find the molar mass of copper oxide (CuO) and copper (Cu).

The molar mass of CuO can be calculated as follows: M(CuO) = atomic mass of Cu + atomic mass of O M(CuO) = 63.55 g/mol (Cu) + 16.00 g/mol (O) M(CuO) = 79.55 g/mol

The molar mass of Cu can be calculated as follows: M(Cu) = 63.55 g/mol

Now, we can find the number of moles (n) for each substance:

For CuO: n(CuO) = m(CuO) / M(CuO) n(CuO) = 160,000 g / 79.55 g/mol ≈ 2011.91 moles

For Cu: n(Cu) = m(Cu) / M(Cu) n(Cu) = 100,000 g / 63.55 g/mol ≈ 1573.49 moles

So, the number of moles of CuO is approximately 2011.91 moles, and the number of moles of Cu is approximately 1573.49 moles.