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aev [14]
3 years ago
12

Can someone help I’m stuck on this question

Chemistry
1 answer:
RideAnS [48]3 years ago
8 0

Answer:

It is <u> </u><u>propyl</u><u> </u><u>amine</u><u>.</u>

<u>as</u><u> </u><u>amine</u><u> </u><u>=</u><u>H-N-H</u>

<u>and</u><u> </u><u>it</u><u> </u><u>contain</u><u> </u><u>3</u><u>C</u><u> </u><u>=</u><u>prop</u><u> </u>

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A sodium hydroxide solution is made by mixing 8.70 g NaOH with 100 g of water. The resulting solution has a density of 1.087 g/m
Ahat [919]

Answer:

Mass fraction = 0.08004

Mole fraction = 0.0377

Explanation:

Given, Mass of NaOH = 8.70 g

Mass of solution = 8.70 + 100 g = 108.70 g

Mass\ fraction\ of\ NaOH=\frac {8.70}{108.70} = 0.08004

Molar mass of NaOH = 39.997 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{8.70\ g}{39.997\ g/mol}

Moles\ of\ NaOH= 0.2175\ mol

Given, Mass of water = 100 g

Molar mass of water = 18.0153 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{100\ g}{18.0153\ g/mol}

Moles\ of\ water= 5.5508\ mol

So, according to definition of mole fraction:

Mole\ fraction\ of\ NaOH=\frac {n_{NaOH}}{n_{NaOH}+n_{water}}

Mole\ fraction\ of\ NaOH=\frac {0.2175}{0.2175+5.5508}=0.0377

3 0
3 years ago
How many nucleons are there in an atom with a nuclear charge of +20 and 23 neutrons?
dalvyx [7]

Answer:

43

Explanation:

8 0
3 years ago
20 POINTS AND BRAINLIEST
maksim [4K]

Answer:

ceramic

Explanation:

7 0
2 years ago
The substances sodium (Na), oxygen (O2), and sodium oxide (Na20) participate in this chemical reaction
Margaret [11]

Answer:

C

Explanation:

This is a synthesis or a combination reaction , which involves the oxygen combining with sodium to make one compound.

hope it helps.

you're welcome.

8 0
3 years ago
What is the major defining property of gasses?.
jonny [76]

Answer:

Gases have no definite shape or volume. They are fluid, allowing particles/molecules to move freely.

The behavior of a gas is that the volume changes directly with temperature. With a constant volume, the pressure will be directly proportional to the amount of gas.

Explanation:

These are some of the properties I can think of

5 0
2 years ago
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