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Andrei [34K]
3 years ago
5

State three uses of oxidation number​

Chemistry
1 answer:
leva [86]3 years ago
3 0

Answer:

Explanation:

1. To identify what's been oxidised and what's been reduced in a redox reaction

2. In naming compounds

3. To work out reacting proportions in titration reactions

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An experiment reveals that 125.0 grams of an unknown metal increases in temperature from 22.0 oC to 43.6 oC upon absorbing 640 j
nydimaria [60]

Answer:

                     Cp  =  0.237 J.g⁻¹.°C⁻¹

Explanation:

                      Amount of energy required by known amount of a substance to raise its temperature by one degree is called specific heat capacity.

The equation used for this problem is as follow,

                                                 Q  =  m Cp ΔT   ----- (1)

Where;

           Q  =  Heat  =  640 J

           m  =  mass  =  125 g

           Cp  =  Specific Heat Capacity  =  <u>??</u>

           ΔT  =  Change in Temperature  =  43.6 °C  -  22 °C  =  21.6 °C

Solving eq. 1 for Cp,

                                Cp  =  Q / m ΔT

Putting values,

                                Cp  =  640 J / (125 g × 21.6 °C)

                                Cp  =  0.237 J.g⁻¹.°C⁻¹

3 0
3 years ago
Please tell me the answer, I will mark the first person to answer brainlist
Mrrafil [7]

Answer:

option b

maybe!

I hope it help you

6 0
3 years ago
Read 2 more answers
How many unpaired electrons are present in the ground state of an atom from each of the following groups?
Paha777 [63]

Explanation:

General electronic configuration for the given groups are as follows.

For 4A(14) : ns^{2}np^{4}

This means that there are 4 unpaired electrons in group 4A(14).

For 7A(17) : ns^{2}np^{5}

So, there are 7 unpaired electrons present in group 7A(17).

For 1A(1) : ns^{1}

Hence, there is only one unpaired electron present in group 1A(1).

For 6A(16) : ns^{2}np^{4}

So, there are 6 unpaired electrons present in group 6A(16).

3 0
4 years ago
Which of the following solvents are polar? (eg Have an overall molecular dipole) (Hexanes, Ethyl Acetate, Ethanol) Ethyl acetate
slega [8]

Answer:

Ethanol

Explanation:

Hello,

Since the hexanes and the ethyl acetate are mostly composed by C-C, C-H and for the ester C-O bonds which are apolar, just the ethanol which has one O-H bond could be classified as polar, allowing H-bridges to be present.

Best regards.

4 0
4 years ago
What is the classified matter of gold​
forsale [732]
Gold is classified as a Solid
6 0
3 years ago
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