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Whitepunk [10]
2 years ago
15

All of the following are examples of suspensions except what?:

Chemistry
1 answer:
artcher [175]2 years ago
6 0
Dust particles in the air
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How many joules of heat are absorbed when 73 g water are heated from 30*C to 43*C? *
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Answer:

3966.82 J

Explanation:

q=sm∆T

q=73×13×4.18

the specific heat for water is 4.18

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Question 1 2.3 kJ is how many J?​
Vinil7 [7]

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2300J

Explanation:

1 kilojoule is 1000joules so to get how much is 2.3 multiply it with 1000

4 0
2 years ago
A chemical reaction produced 10.1 cm3 of nitrogen gas at 23 °C and 746 mmHg. What is the volume of this gas if the temperature a
adell [148]

Answer:

volume of gas = 9.1436cm³

Explanation:

We will only temperature from °C to K since the conversion is done by the addition of 273 to the Celsius value.

Its not necessary to convert pressure and volume as their conversions are done by multiplication and upon division using the combined gas equation, the factors used in their conversions will cancel out.

V1 =10.1cm³ , P1 =746mmHg,     T1=23°C =23+273=296k

V2 =? ,   P2 =760mmmHg ,     T2=0°C = 0+273 =273K

Using the combined gas equation to calculate for V2;

\frac{V1P1}{T1}=\frac{V2P2}{T2} \\ re-arranging, \\V2 =\frac{V1P1T2}{P2T1}

V2 =\frac{10.1*746*273}{760*296}

V2=9.1436cm³

6 0
3 years ago
Substances that can be separated and found on a periodic table.
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Elements are found on a periodic table. 

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