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levacccp [35]
2 years ago
11

What does the mass number of an atom represent?.

Chemistry
1 answer:
mamaluj [8]2 years ago
8 0

Answer:

the sum of the numbers of protons and neutrons present in the nucleus of an atom.

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How many grams of hydrogen are necessary to react with 2.85 mol CO
Lynna [10]

CO+2 H2=CH3OH

2.85 mol Co x (2mol H2/1 mol Co)=5.70 mol just concert to grams

5.70 mol H2 x (2 g H2/1 mol H2) =11.40 grams of H2

6 0
3 years ago
A student uses a solution of potassium hydroxide to titrate a solution of nitric acid. Which question is the student trying to a
Mnenie [13.5K]

Answer:

A. What is the concentration of nitric acid?

Explanation:

its right

4 0
3 years ago
If there are 1,000 mg in 1<br> gram. Then how many mg are<br> in 2.5 grams?
mihalych1998 [28]

Answer:

1 gram =1000mg

Explanation:

Then 2.5g=2.5*1000

2500mg

7 0
3 years ago
What makes a substance pure?
Norma-Jean [14]

Answer: When a substance is pure, it is composed of one type of molecule. For example, table salt is only composed of (more or less) salt molecules, while seawater has water and salt molecules. A more complicated example of a non - pure substance is soil. It has many different types of nutrients and compounds.

5 0
4 years ago
Read 2 more answers
Hurry. NO Spam! Write the neutralization reaction that occurs between HF and LiOH.
tekilochka [14]

Answer:

HF + LiOH = LiF + H2O.

Explanation:

Hydofluoric acid is a weak acid the solution would be slightly basic due to the following equilibrium (condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs.)

Hope that helps. x

4 0
3 years ago
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