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solniwko [45]
3 years ago
15

How many moles of N2O5 are needed to produce 7.90 g of NO2?

Chemistry
1 answer:
Roman55 [17]3 years ago
4 0

Answer:

0.085 moles of  N₂O₅ are needed

Explanation:

Given data:

Mass of NO₂ produces = 7.90 g

Moles of N₂O₅ needed = ?

Solution:

2N₂O₅       →     4NO₂  + O₂

Number of moles of NO₂ produced :

Number of moles = mass/ molar mass

Number of moles = 7.90 g/ 46 g/mol

Number of moles = 0.17 mol

now we will compare the moles of NO₂   with N₂O₅.

                NO₂          :       N₂O₅

                  4            :          2

                0.17          :         2/4×0.17 = 0.085 mol

Thus, 0.085 moles of  N₂O₅ are needed.

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Mercury has a mass density of 13.54g/mL. How many milliliters would 100. Grams occupy?
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Answer:

The answer is

<h2>7.39 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}  \\

From the question

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The volume of the metal is

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We have the final answer as

<h3>7.39 mL</h3>

Hope this helps you

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3 years ago
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OLEGan [10]

Answer:

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Explanation:

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<u>Root word</u>:

A root is a word that does not have a prefix in front of the word or a suffix at the end of the word. The root word is the main lexical unit of a word and a family of words, which carries the most significant aspects of semantic content and cannot be reduced to smaller components

<u>Combining form</u>:

Training process of  words from two or more roots or simple words.

When the word includes a cultured base and a patrimonial base, we will consider derived word. For example, hypermarket, bi-monthly

6 0
4 years ago
What is the molarity of a kcl solution made by diluting 75.0 ml of a 0.200 m solution to a final volume of 100. ml?
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The  molarity of  KCl  solution    made  by  diluting  75.0 ml   of a  0.200M  solution   to a final  volume  of 100ml  is  calculated  using  the  below  formula

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M2=?

by  making M2  the formula  of  the  subject   M2  =M1V1/V2
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