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Molodets [167]
3 years ago
11

What are the missing coefficients for the skeleton equation below?

Chemistry
1 answer:
Vika [28.1K]3 years ago
3 0

Answer:

C. Double Replacement

Explanation:

A. Wrong because SR uses a compound and element. This equation is a compound and compound.

B. Wrong because it does not have O2 in the formula. All combustion reactions must have O2.

C. Correct because it is a compound reacting with a compound.

D. Wrong because the reactants did not form a single product. ex. (x + y > xy)

E. Wrong because the equation did not start with a single compound and break down. ex. (xy > x + y)

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Which of the following are considered pure substance??
Shkiper50 [21]

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7 0
4 years ago
The label on a bottle of Hydrogen peroxide reads 3.0% hydrogen peroxide. The bottle is 946 ml. How many ml of hydrogen peroxide
kenny6666 [7]

Answer:

28.38 ml of H202

Explanation:

<u><em>Given data:</em></u>

the concentration of H2O2  = 3.0 % v/v (3ml / 100 ml of solution of H2O2

the volume of the bottle : 946 ml

<em><u>Formula: </u></em>

Percent by volume: volume of solute/volume of solution×100%

<em><u>Solution:</u></em>

= (3.0 mL/ 100 ml) × 946 mL

= 0.03 x 946 ml

= 28.38ml of H202

4 0
4 years ago
If you add 90 mL of 0.15M stock solution, to 10 mL of water, what is the new concentration?
lyudmila [28]

0,15 moles of NaOH-------in------------1000ml

x moles of NaOH------------in--------100ml

x = 0,015 moles of NaOH

final volume = 150ml

0,015 moles of NaOH---in-------150ml

x moles of NaOH--------------in-----1000ml

x = 0,1 moles of NaOH

answer:  0,1mol/dm³  (molarity)

6 0
3 years ago
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