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nordsb [41]
3 years ago
9

PLEASE HELP! I'LL GIVE YOU BRAINLIEST!

Chemistry
2 answers:
atroni [7]3 years ago
4 0

Answer:

A.  Red, yellow, white, blue

Rainbow [258]3 years ago
4 0
A, Because It’s the only one with blue at the end and blue is the hottest star.
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yan [13]
86 elections so 43 orbitals
6 0
3 years ago
What materials are going to use to measure for your data?​
BaLLatris [955]

Answer:

a small unit of measurement used for measuring data is bit.

4 0
3 years ago
How many moles of oxygen are required to react with methanol in order to produce 13 moles of formaldehyde?
ddd [48]

Answer:

6.5 moles of Oxygen are required

Explanation:

Based on the reaction:

CH3OH + 1/2 O2 → CH2O + H2O

1 mole of methanol reacts with 1/2 moles O2 to produce 1 mole of formaldehyde and 1 mole of water.

Thus, to produe 13 moles of formaldehyde, CH2O, are needed:

13 moles CH2O * (1/2mol O2 / 1mol CH2O) =

<h3>6.5 moles of Oxygen are required</h3>
3 0
3 years ago
Q3. A student wanted to make blue copper sulfate crystals from green copper carbonate powder
CaHeK987 [17]

Heat the sulfuric acid solution and adding copper carbonate in it.

<h3>Improvement require in this experiment</h3>

The method could be improved by heating sulfuric acid solution and add copper carbonate into the solution of sulfuric acid. Add the copper carbonate until it is present in excess amount. After that filter the extra amount of copper carbonate so in this way the blue copper sulfate crystals are produced.

Learn more about copper here: brainly.com/question/3157958

5 0
2 years ago
True or false? During a change of state the temperature of the substance does not change.​
irakobra [83]

Answer:

false

Explanation:

the temperature of a substance can not remain constant as the substance changes from solid to liquid then finllay from liquid to gas. This is so because as a solid is heated it changes state and once it rechanges it boiling point it changes to gas or vapour.

8 0
3 years ago
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