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zloy xaker [14]
3 years ago
12

If you repeat an experiment and the results are very different from the results you got the first time, the next step would be t

o
Select one:


a. trust the second results.

b. decide which results are better.

c. repeat the experiment again.

d. try a different experiment
Chemistry
2 answers:
Yuliya22 [10]3 years ago
5 0
Answer: option c. repeat the experiment again.

Because, the first approach is to assume that there was a mistake in one or both ot the two trials. Only if the results continue being different in several trials, you have to think in a design error and then modify the experiment.
shutvik [7]3 years ago
4 0
C , you need a definite answer , if you get a completely different results again , id say take the mean / average so you have some results
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zmey [24]

Mass motion

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2 years ago
PLEAEEEE HELPPP
alexgriva [62]
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8 0
3 years ago
2. Calculate the mass of 5.35 mole of H2O2.
Dmitry_Shevchenko [17]

Answer:

5.35m H2O2 x 34.02g/1m H2O2 = 182g H2O2

Explanation:

6 0
2 years ago
Nitrogen dioxide and water react to form nitric acid and nitrogen monoxide, like this:
posledela

Answer: The value of the equilibrium constant Kc for this reaction is 3.72

Explanation:

Equilibrium concentration of HNO_3 = \frac{15.5g}{63g/mol\times 9.5L}=0.026M

Equilibrium concentration of NO = \frac{16.6g}{30g/mol\times 9.5L}=0.058M

Equilibrium concentration of NO_2 = \frac{22.5g}{46g/mol\times 9.5L}=0.051M

Equilibrium concentration of H_2O = \frac{189.0g}{18g/mol\times 9.5L}=1.10M

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_c  

For the given chemical reaction:

2HNO_3(aq)+NO(g)\rightarrow 3NO_2(g)+H_2O(l)

The expression for K_c is written as:

K_c=\frac{[NO_2]^3\times [H_2O]^1}{[HNO_3]^2\times [NO]^1}

K_c=\frac{(0.051)^3\times (1.10)^1}{(0.026)^2\times (0.058)^1}

K_c=3.72

Thus  the value of the equilibrium constant Kc for this reaction is 3.72

5 0
2 years ago
Select the correct answer.
Alex

no:A

is a correct answer

7 0
3 years ago
Read 2 more answers
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