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postnew [5]
2 years ago
12

Amol has divided some substances into two groups as shown in the table below. He wants to further separate all the substances in

Group 1 again into exactly two groups. Which of the following criteria will allow him to do so?
A. liquids and solids  

B. mixtures and pure substances

C. naturally occurring and man-made substances.

D. substances completely soluble and insoluble in water.​

Chemistry
2 answers:
Nonamiya [84]2 years ago
6 0

The criteria that will allow Amol separate group 1 substances into two groups are mixtures and pure substances (option B).

<h3>What are mixtures and pure substances?</h3>

Mixtures are substances that are made up of two or more substances that can be easily separated.

Pure substances, on the other hand, are elements and compounds that cannot be separated by chemical means.

In group 1 of the above table, the substances can be classified as follows:

  • Soil - mixture
  • Tomato ketchup - mixture
  • Smoke - compound
  • Milk - mixture
  • Hair shampoo - mixture

Therefore, the criteria that will allow Amol separate group 1 substances into two groups are mixtures and pure substances.

Learn more about mixture at: brainly.com/question/24898889

#SPJ1

Degger [83]2 years ago
5 0

Answer:

Explanation:

b is the right answer

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Which change would increase the pressure exerted by a gas?
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C - raising the temperature of a gas

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7 0
3 years ago
A sample of propane (C3H8) has a mass of 0. 47 g. The sample is burned in a bomb calorimeter that has a mass of 1. 350 kg and a
Nady [450]

The amount of heat released by the sample has been 22.54 kJ. Thus, option C is correct.

The specific heat has been defined as the amount of heat required to raise the temperature of 1 gram of substance by 1 degree Celsius.

The specific heat has been expressed as:

q=mc\Delta T

<h3 /><h3>Computation for the heat absorbed</h3>

The iron and calorimeter are in side the closed system. Thus, the energy released by the sample, has been equivalent to the energy absorbed by the calorimeter.

q_{released}=q_{absorbed}\\&#10;q_{released}=m_{calorimeter}\;c_{calorimeter}\;\Delta T

The given mass of calorimeter has been, m_{calorimeter}=1350\;\rm g

The specific heat of the calorimeter has been, c_{calorimeter}=5.82\;\rm J/g^\circ C

The change in temperature of the calorimeter has been, \Delta T=2.87^\circ \rm C

Substituting the values for heat released:

q_{released}= 1350\;\text g\;\times\;5.82\;\text J/\text g^\circ \text C\;\times\;2.87^\circ \text C\\&#10;q_{released}=22,549.5\;\text J\\&#10;q_{released}}=22.54\;\rm kJ

The amount of heat released by the sample has been 22.54 kJ. Thus, option C is correct.

Learn more about specific heat, here:

brainly.com/question/2094845

6 0
2 years ago
Help would be majorly appreciated
Sophie [7]

Answer:

a) the atomic number is 15

b) the mass number is 15+16 = 31

c) element is phosphorus

d)Group 15 period 3

6 0
2 years ago
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Gnoma [55]
For #4 first find the molar mass(M) of copper then use that and the mass (m) n=m/M to find moles(n) using moles and the volumes find the concentration using c=n/V
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