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slava [35]
3 years ago
7

Which two changes of state can be caused by removing thermal energy from a substance? choose two

Chemistry
2 answers:
koban [17]3 years ago
6 0

Answer:

Explanation:

It is Deposition and Condensation

crimeas [40]3 years ago
4 0

Answer:

B and C

Explanation:

The correct answer is Condensation and Deposition

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The difference between asexual and sexual reproduction is _______. Please help me with this, thank you.
Alecsey [184]

Answer:

hope this helped.

Explanation:

Sexual reproduction just means combining genetic material from two parents. Asexual reproduction produces offspring genetically identical to the one parent.

4 0
3 years ago
As the volume of a gas increases, what happens to the pressure of the gas?
Elena L [17]
Boyle found that when the pressure of gas at a constant temperature is increased, the volume of the gas decreases. when the pressure of gas is decreased, the volume increases. this relationship between pressure and volume is called Boyle's law.
4 0
3 years ago
State the oxidation number assigned to each bold element in the formula: NH4+1 a 3 b -3 c -1 d 6
Leya [2.2K]
The fomula is NH4 (1+)


There are only two elements N and H.


As per oxidation state rules, the most electronegative element will have a negative oxidation state and the other element will have a positive oxidation state.


N is more electronative than H, so H will have a positive oxidation state and nitrogen will have a negative oxidation state.


You can also use the rule that states the hydrogen mostly has 1+ oxidation state,except when it is bonded to metals.


In conclusion the oxidation state of H in NH4 (1+) is 1+.


Now you must know that the sum of the oxidations states equals the charge of the ion, which in this case is 1+.


That implies that 4* (1+)  + x =   1+


=> x = (1+) - 4(+) = 3-


Answer:  the oxidation state of N is 3-, that is the option b.
8 0
4 years ago
Can someone please help with this-
Nonamiya [84]
Ignition wires make it more accurate because it will cook it faster
stirrer would have the less results of fast
a sealed bomb may cook it fast but you would have to be careful and don't mess up
5 0
4 years ago
What will happen if there is an insufficient supply of oxygen during the combustion of a hydrocarbon?
Kamila [148]
As long as there is some oxygen, the reaction will occur. If there is an insufficient amount of oxygen, then the oxygen will be the limiting reacting and there will be excess of the other reactants. 
8 0
4 years ago
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