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Olin [163]
3 years ago
8

Determine the mass (in g) of a substance, with a density of 2.26 g/mL, that occupies 350.0 mL.

Chemistry
1 answer:
Andreyy893 years ago
6 0

Answer:

m = 79.1 grams

Explanation:

Given that,

Density, d = 2.26 g/mL

Volume occupies, V = 35 mL

We need to find the mass of the substance. We know that the density of an object is equal to the mass per unit volume. So,

d = m/V

m=d\times V\\\\m=2.26\ g/mL\times 35\ mL\\\\m=79.1\ g

So, the mass of the substance is 79.1 grams.

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Explanation:

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We can see from this equation that the wavelength is inversely proportional to the difference of the squares of the inverse of the quantum numbers n₁ and n₂. It follows then that the smallest wavelength will be given when the the transitions are between the greatest separation between n₁ and n₂ whicg occurs when n1= 1 and n₂= ∞ , that is the greater the separation in energy levels the shorter the wavelength.

Substituting for n₁ and n₂ and solving for λ :

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