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Tom [10]
2 years ago
10

How many grams of hydrogen reacts with 32 g of oxygen to produce 34 g of hydrogen peroxide

Chemistry
1 answer:
nordsb [41]2 years ago
8 0

Answer:

2 grams.

Explanation:

H2 + O2 --->  H2O2

Using molar masses:

2*1 g hydrogen   reacts with 2*16  g oxygen.

so 2g H2 reacts with 32 g O2.

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How many grams of perchloric acid should be dissolved in 8500mL of water to make a solution with pH 3.3
Natalija [7]

Answer:

0.427 g HClO4

Explanation:

[H+]= 10^-3.3 = 5.01 x 10^-4 M

8500 mL=8.5 L

M= mol solute/ L solution

mol solute= M* L solution

mol solute= (5.01 x 10^-4 M * 8.5 L)

mol solute= 4.26 x 10^3 mol HClO4

1 mol HClO4             -> 100. 4 g

4.26 x 10^3 mol HClO4 -> x

x=0.427 g HClO4

3 0
2 years ago
A battery is an example of a(n) _________. A. anode B. voltaic cell C. cathode D. electrolytic cell
Harrizon [31]

Answer:

The answer is D) Electrolytic cell

Explanation:

An electrolytic cell is a device used for the decomposition by the electrical current of ionized substances called electrolytes.

When the two electrodes are connected by a wire, electrical energy is produced, and a flow of electrons takes place from the electrode.

These cells are the closest thing to a galvanic battery.

4 0
3 years ago
A multistep reaction can only occur as fast as its slowest step. Therefore, it is the rate law of the slow step that determines
kodGreya [7K]

Answer : The rate law for the overall reaction is, Rate=k[A][B]

Explanation :

Rate law : It is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

As we are given the mechanism for the reaction :

Step 1 : A+B\rightarrow AB    (slow)

Step 2 : A+AB\rightarrow A_2B     (fast)

Overall reaction : 2A+B\rightarrow A_2B

The rate law expression for overall reaction should be in terms of A and B.

As we know that the slow step is the rate determining step. So,

The slow step reaction is,

A+B\rightarrow AB

The expression of rate law for this reaction will be,

Rate=k[A][B]

Hence, the rate law for the overall reaction is Rate=k[A][B]

3 0
2 years ago
Which term identifies the half-reaction that occurs at the anode of an operating electrochemical cell?
Inga [223]
Oxidation reaction.
Cathode on the other hand is reduction.
4 0
3 years ago
Which is the correctly balanced chemical equation for the reaction of KOH and H2SO4?
zalisa [80]

Answer:

2KOH + H₂SO₄ → K₂SO₄ + 2H₂O.

Explanation:

  • This is an acid-base reaction which produces salt and water according to the balanced equation:

<em>2KOH + H₂SO₄ → K₂SO₄ + 2H₂O.</em>

<em></em>

it is clear that 2.0 moles of KOH react with 1.0 mole of H₂SO₄ to produce 1.0 mole of K₂SO₄ and 2.0 moles of H₂O

4 0
3 years ago
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