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oee [108]
2 years ago
14

How many protons are in the nucleus of a lithium atom in its excited state

Chemistry
1 answer:
Oksana_A [137]2 years ago
7 0

Answer:

the answer is three protons

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H2SO4 + 2NaOH → 2H2O + Na So.
gayaneshka [121]

Answer:

2 mol H

Explanation:

For every 2 mol of NaOH, we're reacting 2 mol of H2O. In order to figure out how many mol of H are needed, it needs to be set up stochiometrically. Starting off with the given value, 1 mol of NaOH, we can then make a mol to mol ratio. For 2 mol of NaOH, we have 2 mol of H2O. For every 2 mol of H2O, we have 4 mol of H (this is because we are multiplying the coefficient by the subscript: 2 × 2). Now, we can solve for our answer.

1 mol NaOH × (2 mol H₂O / 2 mol NaOH) × (4 mol H / 2 mol H₂O)

= 2 mol H

Thus, we get 2 mol of H are needed to completely react 1 mol of NaOH.

7 0
3 years ago
Equilibrium describes the balance that results from a forward and reverse reaction proceeding at equal rates. Since reaction rat
Nitella [24]

Answer:

the reaction proceeds to a new equilibrium in the direction that offsets the change.Explanation:

7 0
3 years ago
Read 2 more answers
What causes a substance to change states of matter?
kolezko [41]
Salutations!

What causes a substance to change states of matter?

Energy causes a substance to change states of matter. A matter needs energy to melt, evaporate, boil. Remember: Energy has a sudden change, but the temperature remains absolutely the same. An example of a change in energy is when ice is melting.

Hope I helped (:

Have a great day!
8 0
3 years ago
The asthenosphere is the part of the upper mantle just below the lithosphere that os involved in the plate tectonic movement anf
likoan [24]

Answer:C

Explanation:

3 0
3 years ago
The half-life of na-24 is 15 hours . when there are 1000 atoms of na-24 in a sample , a scientist starts a stopwatch . the scien
marin [14]

125 Each half life it divides by 2 the amount
1000/2=500
500/2=250
250/2=125

8 0
3 years ago
Read 2 more answers
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