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Vanyuwa [196]
3 years ago
7

What is the chemical formula for the base lithium hydroxide?

Chemistry
1 answer:
shutvik [7]3 years ago
3 0
LiOH is the weakest base among the alkali metal hydroxides
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Match the grams of each element or compound to the corresponding number of moles of that element or compound.
klasskru [66]

Answer is: 20.0g H - 20.0 moles; 0.50 g Na - 0.022 moles; 2.0 x 102 mg H2O - 0.011 moles.

1) m(H) = 20.0 g; mass of hydrogen.

n(H) = m(H) ÷ M(H).

n(H) = 20 g ÷ 1 g/mol.

n(H) = 20.0 mol; amount of hydrogen.

2) m(Na) = 0.50 g; mass of sodium.

n(Na) = m(Na) ÷ M(Na).

n(Na) = 0.5 g ÷ 22.98 g/mol.

n(Na) = 0.022 mol; amount of sodium.

3) m(H₂O) = 200 mg ÷ 1000 mg/g.

m(H₂O) = 0.20 g; mass of water.

n(H₂O) = m(H₂O) ÷ M(H₂O).

n(H₂O) = 0.2 g ÷ 18 g/mol.

n(H₂O) = 0.011 mol; amount of water.

8 0
3 years ago
Read 2 more answers
, the elements present in common salt are
katrin2010 [14]

Answer:

Chemically, table salt consists of two elements, sodium (Na) and chloride (Cl). Neither element occurs separately and free in nature, but are found bound together as the compound sodium chloride.

Explanation:

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7 0
3 years ago
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the mass by mass percentage of a solution is 20%. find the mass of the solute dissolved in 500g of solution​
GuDViN [60]

Answer:

m_{solute}=100g

Explanation:

Hello,

In this case, by considering the mathematical definition of by mass percentage of a solute as shown below:

\%m/m=\frac{m_{solute}}{m_{solution}}*100\%

We are able to compute the mass of the solute in a 20% solution having 500 g of solution as follows:

m_{solute}=\frac{m_{solution}*\%m/m}{100\%} =\frac{500g*20\%}{100\%}\\ \\m_{solute}=100g

Best regards.

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4 years ago
All yall smarties Plz Help I will Mark you BRAINLY A student is investigating how thermal energy moves. The student heated a nai
mote1985 [20]

Answer: B

Explanation:i dont the explaniation but my dad is an expert in science so he told me the answer

3 0
3 years ago
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At the ph found in cells (about 7.0) what happens to the amino group on an amino acid
Andrew [12]
This means that the amino acid is neutral due to the pH equals 7
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3 years ago
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