Which best explains why water has a much higher boiling point than would otherwise be predicted?

Chemistry

2 answers:

My name is Ann [436]3 years ago

7 0

Answer: water from strong hydrogen bonds

Explanation:

ikadub [295]3 years ago

5 0

My guess is that water is a liquid and not a solid, or a gas. It can be heated by us or by the suns rays, which if done by the suns rays the water azorbs the light rising the temp to the point of boil which then makes the water evaporate into the air, and thus making cloud in the sky that we see all the time thus when the clouds become big enough it begins to rain. ( also called the water cycle)

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What is the percent yield of NaCl if 31.0 g of CuCl2 reacts with excess NaNO3 to produce 21.2 g of NaCl?

Harrizon [31]

First you need to find the balanced chemical formula.
CuCl₂+2NaNO₃→2NaCl+Cu(NO₃)₂

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3 years ago

How is an average mass different from a weighted mass

romanna [79]

In an average mass, each entry has equal weight. In a weighted average, we multiply each entry by a number representing its relative importance.

Assume that your class consists of 15 girls and 5 boys. Each girl has a mass of 54 kg, and each boy has a mass of 62 kg.

Average mass = (girl + boy)/2 = (54 kg + 62 kg)/2 = 58 kg

Weighted average (Method 1)

Use the numbers of each gender (15 girls + 5 boys) ,

Weighted average = (15×54 kg + 5×62 kg)/20 = (810 kg + 310 kg)/20

= 1120 kg/20 = 56 kg.

If you put all the students on one giant balance, their total mass would be

1120 kg and the average mass of a student would be 56 kg.

Weighted average (Method 2)

Use the relative percentages of each gender (75 % girls and 25 % boys).

Weighted average = 0.75×54 kg + 0.25×62 kg = 40.5 kg + 15.5 kg = 56 kg

Each girl contributes 40.5 kg and each boy contributes 15.5 kg to the weighted average mass of a student.

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