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Tasya [4]
3 years ago
7

Please help!! will give brainliest if u tell me how

Chemistry
1 answer:
Alona [7]3 years ago
8 0
I am pretty sure it’s A
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What is the answers to these questions?
serious [3.7K]

2. B

3. B

4. A

5. C

6. B

4 0
3 years ago
why do you think that sodium chloride has to be heated to 800c before melting, but candle wax will start to melt at 50c?
RideAnS [48]

Answer:

Sodium chloride is an ionic compound which makes it stronger and have a higher melting and boiling point. Candle wax is a covalent compound so it has a low melting point.

Explanation:

<h2><u><em>PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>
5 0
2 years ago
A compound has an empirical formula of CHBr2. If it’s molar mass is 345.6 grams, what is it’s molecular formula
djyliett [7]

Answer:

The molecular formula is C2H2Br4

Explanation:

Molar Mass of CHBr2 = 12 + 1 + (2x80) = 12 + 1 + 160 = 173

The molecular formula = n x empirical formula

Molar Mass of the compound = 345.6

Empirical formula = CHBr2

n(CHBr2) = 345.6

n x 173 = 345.6

n = 345.6/173 = 2

Therefore the molecular formula is n(CHBr2) = 2(CHBr2) = C2H2Br4

3 0
3 years ago
The mass of the products of a chemical reaction will be? greater than the mass of the reactants, the same as the mass of the rea
NeTakaya
This is simple it is proportional. 

3 0
3 years ago
An object has a mass of 4 grams and a volume of 2 cm3. What is the density of the object
kolbaska11 [484]

Answer:

<h3>The answer is 2.0 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question

mass = 4 g

volume = 2 cm³

We have

density =  \frac{4}{2}  \\

We have the final answer as

<h3>2.0 g/cm³</h3>

Hope this helps you

3 0
3 years ago
Read 2 more answers
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