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Ratling [72]
3 years ago
15

Calculate the relative molecular mass of C2H2O42H2O​

Chemistry
1 answer:
Alexus [3.1K]3 years ago
8 0

Answer:

CaSO4 2H20

Explanation:

if you look it up you would see the same answer on a website

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List the methods of separation used in water purification...... ( HELP PLEASE )
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Answer:

I can list four. These are the main ones.

Bolling

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Chlorination

Explanation:

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3 years ago
PLEASE HELP!!! I'll give brainliest answer
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Answer:

1. MG

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2 years ago
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Question 1 (Multiple Choice Worth 2 points)
Nookie1986 [14]

The scientific models are used because they allow scientists to make predictions and make it easier for scientists to avoid using data. option A and C is correct.

<h3>What are scientific models?</h3>

The scientific models are those which is given by scientists to allow them to make prediction about anything particular on which they are working or making research for it some examples are plum pudding model for an atom and bohr's model of an atom etc.

The biggest advantage is that scientists do not have to check the given data which are written into books they can perform their experiment and can conclude the data by performing experiment.

Therefore, scientific models are used because they allow scientists to make predictions and make it easier for scientists to avoid using data. option A and C is correct.

Learn more about scientific models, here:

brainly.com/question/1622233

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7 0
1 year ago
What is the half-life of sodium-24? EXPLAIN how you determined your answer.
liraira [26]
Half-life is basically how long it takes for a radioactive molecule to get to 1/2 of its original mass.

so if sodium 24 mass was 5g and it's half life was 24years then:

after every 24years 1/2 of 5g would have decayed. so in 48years there will only be 2.5g left.
8 0
3 years ago
How many molecules are in 4HCl
Mnenie [13.5K]
4 molecules bc the coefficient is 4
8 0
3 years ago
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