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Rama09 [41]
3 years ago
14

A scilentific experiment is repeated, but its results cannot be repeated by others. What can you conclude about the experiment?

Chemistry
1 answer:
klasskru [66]3 years ago
6 0

If the results of the experiment on repeating are not same, it shows the results are not standard, there are some factors, which are not constant

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Balance each of the following examples of heterogeneous equilibria and write each Kc expression. Then calculate the value of Kc
marysya [2.9K]

Explanation:

1) 2 Al(s) + 2 NaOH(aq) + 6 H_2O(l) \longleftrightarrow 2 Na[Al(OH)_4](aq) + 7 H_2(g)

Kc=\frac{[Na[Al(OH)_4]]^2*[H_2]^7}{[NaOH]^2}

The Kc for the reverse reaction is the inverse of the Kc of the reaction:

Kc_{reverse}=\frac{1}{Kc}=\frac{1}{11}=0.091

2) H_2O(l) + SO_3(g) \longleftrightarrow H_2SO_4 (aq)

Kc=\frac{[H_2SO_4]}{[SO_3]^2}

The Kc for the reverse reaction is the inverse of the Kc of the reaction:

Kc_{reverse}=\frac{1}{Kc}=\frac{1}{0.0123}=81.3

3)  P_4(s) + 3 O_2(g) \longleftrightarrow P_4O_6(s)

Kc=\frac{1}{[O_2]^3}

The Kc for the reverse reaction is the inverse of the Kc of the reaction:

Kc_{reverse}=\frac{1}{Kc}=\frac{1}{1.56}=0.641

5 0
4 years ago
PLZ HELP HALF M GRADE!!<br> how does an arrangement of atoms in a mineral relate to its proprieties?
marissa [1.9K]
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Acetone is a common solvent that has a density of 0.7899 g/mL. What volume of acetone, in milliliters, has a mass of 44.2 g
balu736 [363]

The volume of acetone, in milliliters, has a mass of 44.2 g is 55.96mL.

<h3>HOW TO CALCULATE VOLUME?</h3>

The volume of a substance can be calculated by dividing the mass by its density. That is;

Volume (mL) = mass (g) ÷ density (g/mL)

According to this question, acetone is a solvent with density of 0.7899g/mL and mass of 44.2g. The volume is calculated as follows:

Volume = 44.2g ÷ 0.7899g/mL

Volume = 55.96mL

Therefore, the volume of acetone, in milliliters, has a mass of 44.2g is 55.96mL.

Learn more about volume at: brainly.com/question/1578538

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Which list places the layers of the sun in the correct order from outermost to innermost?
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