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Zanzabum
3 years ago
9

What is an an example of a chemical reaction?

Chemistry
2 answers:
deff fn [24]3 years ago
6 0

Answer:

2

Explanation:

Number 1 wouldn't be because it is a physical change

Number 3 wouldn't be because it is a physical change, as well

Number 4 wouldn't be because it is a physical change, too.

Therefore, it is 3

Hopefully I helped!

-Lavander Vye

Anna11 [10]3 years ago
3 0

Answer:

nail rust!!!!!!!!!!!!!!!!!!

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Explanation: because it is in the southern hemisphere so in the winter while the northern hemisphere is in a cold winter the southern hemisphere is in a warm winter due to it being in the southern hemisphere where temperatures are really warm in the southern hemisphere.

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Saturated hydrocarbon molecules may be bonded in which type of structure?
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4 years ago
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The combustion of butane produces heat according to the equation 2C4H10(g) + 13O2(g) → 8CO2(g) + 10H2O(l), ΔH°rxn= –5,314 kJ/mol
Dafna11 [192]

Answer:

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3 years ago
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4 0
3 years ago
What is the empirical formula of a compound that is made of 3.80g of phosphorus and 0.371g of hydrogen?
lys-0071 [83]

You start by diving each quantity given by the atomic wight of each element:

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So the empirical formula will be:    

PH_{3}

6 0
3 years ago
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