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2 years ago

Plz help it over science stuff

Chemistry

2 answers:

Sergio039 [100]2 years ago

8 0

Answer:9.012

Explanation:

I used the periodic table, the mass is 9.012

weeeeeb [17]2 years ago

7 0

Answer:

Pretty sure it would be 69(nice).

Explanation:

You add the number of protons and neutrons to find the mass

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What plate boundary typically causes earthquakes

djverab [1.8K]

Answer:

Convergent Plate Boundaries

Explanation:

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2 years ago

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Can manganese be a catalyst

Genrish500 [490]

Manganese alone cannot be a catalyst. However, its oxides can work as a catalyst. Manganes (II, III) oxide has found some applications in certain reactions as a catalyst. These reactions are the oxidation of methane, carbon monoxide, decomposition of NO and the catalytic combustion of organic compounds.

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3 years ago

For the system

galben [10]

Answer:

NH3OH⁺ is the strongest acid

Explanation:

NH2OH + CH3NH3⁺ $\leftrightharpoons$ CH3NH2 + NH3OH⁺

Equilibrium favours backward, so NH3OH⁺ is giving H⁺ so NH3OH⁺

The system lies to the left so the reaction is going in backward direction.

So CH3NH2 reacts with NH3OH⁺ to give NH2OH it implies that the H+ is transferred from NH3OH⁺ to CH3NH2, so here the strongest acid is NH3OH⁺. strongest base will be: CH3NH2.

Thus, Equilibrium favours backward, so NH3OH⁺ is giving H⁺ so NH3OH⁺ is the strongest acid

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2 years ago

At the cathode oxygen molecules react with water molecules to form hydroxide ions. Write an ionic equation for this reaction

anygoal [31]

Explanation:

oxygen (O)will react with water(H2O) to form hydroxide which is (OH

O2+H2O=OH

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2 years ago

To make a 3.50 M solution, how many moles of solute will be needed if 11 liters of solution are required?

nignag [31]

Answer:

38.5 moles of solute

Explanation:

3.5 M = moles / 11 Liters

moles = Molarity * Liters

moles = 3.5 M * 11 Liters

moles = 38.5

6 0

3 years ago