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Bad White [126]
2 years ago
8

21.

Chemistry
1 answer:
Bond [772]2 years ago
7 0
The answer is A. The pH decreases
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Calculate the number of moles of carbon dioxide formed when 40.0 moles of oxygen is consumed in the burning of propane. Note the
joja [24]
The first step is to balance the equation:


<span>C3H8 + 5O2 ---> 3CO2 + 4H2O


Check the balance


element          left side        right side

C                    3                  3  
H                    8                  4*2 = 8
O                    5*2=10        3*2 + 4 = 10


Then you have the molar ratios:


3 mol C3H8 : 5 mol O2 : 3 mol CO2 : 4 mol H2O


Now you have 40 moles of O2 so you make the proportion:

40.0 mol O2 * [3 mol CO2 / 5 mol O2] = 24.0 mol CO2.


Answer: option D. 24.0 mol CO2
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7 0
3 years ago
the mass of chemical a is 2g and the mass of chemical b is 5g. if the two chemical are mixed and a chemical reaction takes place
OverLord2011 [107]

Answer:

the answer is 7g

Explanation:

I'm not really sure about the answer but the way i did it is i added 2+5g

5 0
2 years ago
Indicate whether each transition is an emission (e) or an absorption (a). Note: the notation '3p 5s' indicates a transition from
kolbaska11 [484]
Can u show picture because without picture I don’t understand the problem u trying to explain
5 0
2 years ago
Consider the balanced equation below.
Bumek [7]

Answer : The correct option is, (2) 8 mole of hydrogen will react with 1 mole of sulfur.

Explanation :

The balanced chemical equation is,

8H_2+S_8\rightarrow 8H_2S

By the stoichiometry we conclude that, 8 moles of hydrogen react with 1 mole of sulfur to give 8 moles of hydrogen sulfide.

Hence, the correct options is, (2) 8 mole of hydrogen will react with 1 mole of sulfur.

6 0
3 years ago
Read 2 more answers
TWO QUESTIONS! NEED HELP PLEASEEE
castortr0y [4]

First question I believe is B

The second one is also B

I really hope it helped

8 0
3 years ago
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