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VMariaS [17]
3 years ago
10

Calculate ΔHrxn for the following reaction: 5C(s) 6H2(g)→C5H12(l) Use the following reactions and given ΔH values: C5H12(l) 8O2(

g)→5CO2(g) 6H2O(g),ΔHC(s) O2(g)→CO2(g),ΔH2H2(g) O2(g)→2H2O(g),ΔH
Chemistry
1 answer:
Setler79 [48]3 years ago
8 0

Answer: its 4xb236.52

Explanation:

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What is the volume that you should dilute 30mL of a 12.0M H2SO4 solution to obtain a 0.160M H2SO4 solution?
shutvik [7]
To solve this problem, the dilution equation (M1 x V1 = M2 X V2) must be used. The given values in the problem are M1= 12.0 M, V1= 30 mL, and M2= 0.160 M. To solve for V2,
V2=M1xV1/M2
V2= (12x30)/0.16
V2= 2,250 mL.
The correct answer is 2.25 L.
8 0
3 years ago
CaCO3 (s) + 176 KJ à CaO (s) + CO (g)
statuscvo [17]

Answer:

its d

Explanation:

3 0
3 years ago
Radium-221 has a half-life of 30 sec. How long will it take for 96% of a sample to decay?
monitta
We can calculate how long the decay by using the half-life equation. It is expressed as:

A = Ao e^-kt

<span>where A is the amount left at t years, Ao is the initial concentration, and k is a constant.
</span><span>From the half-life data, we can calculate for k.
</span>
1/2(Ao) = Ao e^-k(30)
<span>k = 0.023
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0.04Ao = Ao e^0.023(t)
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3 0
3 years ago
Name the following compound. Group of answer choices 2-methyl-4-pentyne 4-methyl-3-propyl-1-pentyne 3-isopropyl-1-hexyne 1-nonyn
Fynjy0 [20]

The question is incomplete, the complete question is shown in the image attached

Answer:

3-isopropyl-1-hexyne

Explanation:

Organic compounds can be named from the structure of the compound. The name reveals the arrangement of atoms and bonds in the molecule.

If we look at the compound in the question, we will notice that the parent chain contains six carbon atoms, the triple bond is located at position 1 and the isopropyl substituent is attached to carbon 3.

Hence the proper name of the compound becomes, 3-isopropyl-1-hexyne.

7 0
3 years ago
Does a chemical bond join atoms together in a water molecule?
MrRissso [65]
Yes. 

A covalent bond holds it together, which is chemical. 
3 0
3 years ago
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