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1 year ago

How many moles of n are in 0.187 g of n2o?

Chemistry

2 answers:

Ainat [17]1 year ago

8 0

We know that the molar mass of N is 14 and O is 16, therefore the molar mass of N2O is:

molar mass N2O = 14 * 2 + 16 = 44 g/mol

The number of moles:

moles N2O = 0.187 / 44

moles N2O = 0.00425 mol

There are 2 moles of N per 1 mole of N2O hence:

moles N = 0.00425mol * 2

<span>moles N = 0.0085 mol</span>

Andreyy891 year ago

6 0

(I haven't seen it done that simply before!! VERY VERY helpful! Will be using this method on my exam thursday!! Thanks again!) ^_^

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Answer:

12.78 kJ

Explanation:

The correct balanced reaction would be

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Moles of methanol can be obtained by dividing the mass of methanol with its molar mass $(32.04\ \text{g/mol})$

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Enthalpy change for the number of moles is given by

$\dfrac{\text{Number of moles of methanol in the reaction}}{\text{Enthalpy change in the reaction}}=\dfrac{\text{Number of moles in 3.24 g of methanol}}{\text{Enthaply in change in the mass of methanol}}$

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2 years ago

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Every organic group shows a characteristic IR absorption at certain wavelength . With the help of these absorption spectra we can identify the group present on organic molecules .

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1 year ago

In May 2016, William Trubridge broke the world record in free diving (diving underwater without the use of supplemental oxygen)

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2 years ago

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Answer:

Explanation:

¹⁴₇N represents the isotope of nitrogen-14, where the superscript 14 to the left of the chemical symbol of the element is the mass number (number of protons and neutrons) and the subscripst 7 is the atomic number (number of protons).

α is used to represent alpha particles. Alpha particles are nucleus of helium, ⁴₂He: mass number 4, atomic number 2,

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As result, the nucleus of ¹⁴₇N absorbs 1 proton, increasing its atomic number and mass number in 1, becoming ¹⁷ ₈O. In this process, also one proton is produced.

The total reaction is represented by ¹⁴₇N + ⁴₂He → ¹⁷ ₈O + ¹₁p, where you can verify the mass balance:

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2 years ago

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