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Greeley [361]
3 years ago
9

Water has a higher boiling point than expected because A. there is so much water vapor in the atmosphere. B. water molecules are

not very massive. C. hydrogen and oxygen form single covalent bonds. D. of the strong attractions between polar water molecules
Chemistry
2 answers:
IRISSAK [1]3 years ago
8 0
The correct answer is C. Water has a higher boiling point than expected because hydrogen and oxygen form single covalent bonds. Molecules of water is bound together by strong attractions which needs high energy to break resulting to a higher boiling point of water than most substances.
Reika [66]3 years ago
5 0

Answer:

actually the correct answer is d of the strong attractions between polar water molecules

Explanation:

i just took the quiz

the answers for the quiz is:

c

d

d

d

d

b

b

d

this is for the connections quiz for

atoms elements and bonds practice

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Should a mortar and pestle should be used for grinding only one substance at a time
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Now, when you ask if it can only pound one at a time, my honest answer is, it depends. Depending on the size of your mortar, you could grind materials two or three at a time. But if you are concerned with contamination, then you do it one at a time, especially if you don't want them to get mixed up.

8 0
3 years ago
A substance that is uniform in composition, made up of two or more atoms in the same place, and NOT chemically combined is a ___
kap26 [50]

Answer:

homogeneous mixture

Explanation:

from goigle

7 0
3 years ago
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a sample of hydrogen gas (h2) is mixed with water vapor (h2o (g)). the make sure has a total pressure of 811 torr, and the water
Alborosie

Answer:

n=0.430molH_2

Explanation:

Hello!

In this case, considering the partial Dalton's law of partial pressures, we can notice that the total pressure equals the pressure of steam and the pressure of hydrogen, which can be determined as shown below:

p_T=p_H+p_w\\\\p_H=811torr-12torr=799torr*\frac{1atm}{760torr}\\\\p_H=1.05atm

Thus, by using the ideal gas law, we can compute the moles of hydrogen as shown below:

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Best regards!

6 0
3 years ago
The concentration of pb2+ in a solution saturated with pbbr2(s) is 2.14 ✕ 10-2 m. calculate ksp for pbbr2.
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Concentration = 2.14 âś• 10-2 m 
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3 0
3 years ago
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Sunspot Prominence: It is a large, bright, gaseous feature extending outward from the Sun's surface, often in a loop shape. It is similar to a Solar Flare

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