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gavmur [86]
3 years ago
11

Heptane, pentane and octane are accidentally mixed. They all have different boiling points. Pentane boils at 360 ° C, hexane boi

ls at 690 ° C and octane boils at 12 ° C. What method would you use to separate these liquids? Explain how the method works.
Chemistry
1 answer:
Softa [21]3 years ago
7 0

Answer:

Fractional distillation

Explanation:

Heat the mixture upto 700°C

The compuond with low boiling point will evaporate first and the compound with higher boiling point will evaporate last.

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What conclusions can you draw about how temperature and salinity affect the flow of water? Write an evidence-based claim.
S_A_V [24]

Temperature and salinity changes the density of water.

<h3>Effect of Temperature and salinity on water</h3>

Temperature and salinity directly affect density of water. Water that low temperature is more denser than water that has high temperature while on the other hand, Freshwater which has no salt is less denser than seawater which has more salt concentration so we can conclude that temperature and salinity changes the density of water.

Learn more about salinity here: brainly.com/question/20283396

3 0
2 years ago
2MG+O2 ...........2MGO
Galina-37 [17]
Mg + 1/2 O2 → MgO

1 mol = 24 g of Mg

X mol = 12 g of Mg

x = 0.5 moles of Mg

Mg :MgO = 1:1 (coefficient from equations using mole ratio)

So

0.5 moles of MgO

1 mol MgO = (24+16) g = 40 g

0.5 moles of MgO = 0.5 × 40

= 20 g of MgO produced
5 0
2 years ago
Which of the following represents six molecules of water? 6HO 2 6H 2O 1 6H 2O H 6O
n200080 [17]

Answer:

6H20 represents six molecules of water

8 0
3 years ago
Read 2 more answers
A compound X has the following percentage composition 66.7% carbon, 11.1% hydrogen and 22.2% oxygen .Calculate the empirical for
Digiron [165]

Explanation:

c. h. o

66.7%. 11.1%. 22.2%

____. ____. ____

12. 1. 16

1.558. 11.1. 1.39. (divide by the smallest)

1. 8. 1

empirical formula=ch8o

4 0
3 years ago
How many liters are in 5.42 mols of O2 gas?<br><br> (2 decimal places)
Debora [2.8K]

Explanation:

1 mol = 22.4 l

5.42 mol = 22.4 × 5.42 = 121.408

in two decimal place it is 121.41

7 0
3 years ago
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