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ludmilkaskok [199]
2 years ago
6

What is the ‘structural formula’ of water ? BRAINLIEST ANSWER !!

Chemistry
2 answers:
Natalija [7]2 years ago
8 0

H2O, one Oxygen in the middle, surrounded by 2 hydrogen, usually close to each-other, which gives it polarity

vaieri [72.5K]2 years ago
6 0

Water is a colorless, tasteless and odorless substance which is considered to be an universal solvent.

Though you have asked for the structural formula of water which shows the arrangement of the molecules in a compound, but since I cannot draw it here so I will explain in words and hope to make it clear.

Water is made up of Hydrogen and Oxygen in the ratio 2:1 respectively. Therefore its chemical formula is H2O, meaning that each molecule of water contains one Oxygen atom in the middle combined with 1 Hydrogen atom at 'each side' which are bonded covalently.


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Answer:

5000 degrees.

Explanation:

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A compound is 53.31% c, 11.18% h, and 35.51% o by mass. what is its empirical formula?
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A 10-gram sample of zinc loses 560 J of heat and has a final temperature of 100
grandymaker [24]
<h3>Answer:</h3>

Initial temperature is 243.59°C

<h3>Explanation:</h3>

The quantity of heat is calculated by multiplying the mass of a substance by its specific heat capacity and change in temperature.

That is; Q = m×c×ΔT

In this case;

Quantity of heat = 560 J

Mass of the Sample of Zinc = 10 g

Final temperature = 100°C

We are required to determine the initial temperature;

This can be done by replacing the known variables in the formula of finding quantity of heat,

Specific heat capacity, c, of Zinc = 0.39 J/g.°C

Therefore,

560 J = 10 g × 0.39 J/g°C × ΔT

ΔT = 560 J ÷ (3.9 J/°C)

   = 143.59°C

But, since the sample of Zinc lost heat then the temperature change will have a negative value.

ΔT = -143.59°C

Then,

ΔT  = T(final) - T(initial)

Therefore,

T(initial) = T(final) - ΔT

              = 100°C - (-143.59°C)

              = 243.59°C

Hence, the initial temperature of zinc sample is 243.59°C

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2 years ago
Q- 30. The number of grams of solute
pochemuha

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Mass by mass

Explanation:

Because it's telling only about mass in grams

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3 years ago
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Answer:

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52J = 12.42cal

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