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inna [77]
3 years ago
15

Whats heptane's formula?

Chemistry
1 answer:
Dovator [93]3 years ago
5 0
Heptane means seven carbon atoms and since the general formula is CnH2n+2, heptane will be C7H16
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Can someone help me
Sphinxa [80]

Answer: 0.24

Explanation:

M=\frac{moles}{L}\\ M=\frac{0.6 moles}{2.5L} \\M=0.24

4 0
3 years ago
When coke burns in air then evolved gas is​
Arturiano [62]

Answer:

Explanation:

Carbon (coke) burns in air to form carbon dioxide gas.

(i) C(s) + O2 ↑= CO2 ↑

7 0
3 years ago
Which process involves an increase in entropy? crystallization of a solute from a solution ice melting into liquid water iodine
GrogVix [38]
Ice melting into liquid water.
7 0
3 years ago
Read 2 more answers
A compound is formed when 9.03 g
NikAS [45]

The percent composition  of this compound :

Mg = 72.182%

N = 27.818%

<h3>Further explanation</h3>

Given

9.03 g  Mg

3.48 g  N

Required

The percent composition

Solution

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

Total mass of the compound :

= 9.03 g + 3.48 g

= 12.51 g

The percent composition :

Mg : 9.03/ 12.51 g x 100% = 72.182%

N : 3.48 / 12.51 g x 100% = 27.818%

3 0
3 years ago
How many milligrams of a 20mg sample of cesium-137 remain after 60 years
andrey2020 [161]
Cs -137 has a half life of about 30 years. If 60 years pass, there is two half lives passed so 1/2 * 1/2= 1/4. Take 1/4 and multiply it with the mass given:
(1/4)*20mg=5mg left
5 0
3 years ago
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