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r-ruslan [8.4K]
3 years ago
10

Someone pls help me!

Chemistry
2 answers:
dmitriy555 [2]3 years ago
7 0

Answer:

<em>I</em><em> </em><em>think</em><em> </em><em>its</em><em> </em><em>A-When</em><em> </em><em>the</em><em> </em><em>car</em><em> </em><em>is</em><em> </em><em>cruising</em><em> </em><em>straight</em><em> </em><em>down</em><em> </em><em>a</em><em> </em><em>high</em><em>way</em>

IceJOKER [234]3 years ago
5 0
I think it is D i think.
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A. If both Assertion &amp; Reason are true and the reason is the correct explanation of the assertion. B. If both Assertion &amp
Neporo4naja [7]

Answer:

C. If Assertion is true statement but Reason is false.

Explanation:

The burning of magnesium in air produces magnesium oxide as shown by the equation;

2Mg(s) + O2(g) -----> 2MgO(s)

The magnesium oxide solid is recovered as a white ash. This is a typical example of an oxidation reaction which is also a combustion reaction.

The reason has nothing at all to do with the assertion hence the answer given.

Magnesium oxide is basic just like the oxides of other metals and dissolves in water to yield an alkali.

8 0
3 years ago
Read 2 more answers
Which statement explains the energy term in this reaction
lana66690 [7]

Answer:

Mass is lost due to the conversion of mass to energy

Explanation:

The question is not complete, the complete question is given as:

        ^{235}_{72}U +^{1}_{0}n                       ⇒        ^{140}_{56}Ba+^{93}_{36}Kr+3^{1}_{0}n+energy

total mass equals 236.053 u              total mass equals 235.868 u

Which statement explains the energy term in this reaction? (1) Mass is gained due to the conversion of mass to energy. (2) Mass is gained due to the conversion of energy to mass. (3) Mass is lost due to the conversion of mass to energy. (4) Mass is lost due to the conversion of energy to mass.

Answer: From Einstein’s equation  E = mc², when a radioisotope element undergoes fission or fusion in a nuclear reaction, it loses a tiny amount of mass.This mass lost is converted to energy.

The law of conservation of energy  holds for this type of reaction (i.e  the sum of mass and energy is remains the same in a nuclear reaction). Mass changes to energy, but the total amount of mass and energy combined remains the same before and after a nuclear reaction.

From the reaction above, the total decrease in mass = 236.053 - 235.868 = 0.185 u

4 0
3 years ago
At what temperatures is a reaction that has a positive change in entropy
Setler [38]

Answer:

the answer is A

I made a chart for AP chem if you want to refer to it.

3 0
3 years ago
BRAINLIEST
mars1129 [50]
I believe that it most likely would be C,
6 0
3 years ago
No caso da pessoa ser um atleta profissional,essa demanda de energia pode subir até 5400Kcal. Transforme essa medida de energia
ddd [48]

Answer:

If you speak Any English i Think I will be able to help you Los Amigo

Explanation:

6 0
3 years ago
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