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3 years ago

To draw a complete lewis structure of one molecule of water, how many electrons must be shown?

Chemistry

2 answers:

Ipatiy [6.2K]3 years ago

6 0

Answer:

Total 8 electrons.

Explanation:

To draw a complete lewis structure in water molecule we will calculate the total number of valence electrons

Valence electrons:

Two hydrogen atoms: 2 valence electrons (one each)

One oxygen atom : 6 valence electrons

So total there will be 8 electrons that must be shown in the structure.

Out of these 8, four will be involved in two covalent bonds

Rest four will be in the form of two lone pair of electrons on oxygen atom.

love history [14]3 years ago

5 0

In the Lewis structure, each single bond drawn between elements contain two electrons. The electron dots represent the lone pairs. These are the electrons that take part in the reaction. To obey the octet rule, the oxygen must have eight electrons around it. The hydrogen is exempted from this rule. Therefore, you have to show two electrons.

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1. Express in conventional notation (no exponents) in the space provided within the

mina [271]

Answer:

a) 320: two significant figures.

b) 2,366: four significant figures.

c) 73.0: three significant figures.

d. 532.5: four significant figures.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to write each number by knowing we move the decimal places to the right as much as the exponent is, and also, we count every figure, even zeros, because they are to the right of the first nonzero digit:

a) 320: two significant figures because the rightmost zero is not preceded o followed by a decimal place.

b) 2,366: four significant figures.

c) 73.0: three significant figures, because the zero is followed by the decimal place.

d. 532.5: four significant figures.

Regards!

7 0

3 years ago

If 13.8 moles of carbon (c), with a density of 2.26 g/ml, are needed for a chemical reaction, how many milliliters of carbon are

charle [14.2K]

13.8 moles of carbon = 12 g/mol*13.8 or 165.6 grams

165.6 grams/ 2.26 g/mL = 73.27434 or 73.3 mL

I hope this helps!!!!

8 0

3 years ago

Read 2 more answers

Cacodyl, which has an intolerable garlicky odor and is used in the manufacture of cacodylic acid, a cotton herbicide, has a mass

Papessa [141]

Answer:

The molecular formula of cacodyl is C₄H₁₂As₂.

Explanation:

Let's assume we have 1 mol of cacodyl, in that case we'd have 209.96 g of cacodyl and the following masses of its components:

209.96 g * 22.88/100 = 48.04 g C

209.96 g * 5.76/100 = 12.09 g H

209.96 g * 71.36/100 = 149.83 g As

Now we convert those masses into moles:

48.04 g C ÷ 12 g/mol = 4.00 mol C

12.09 g H ÷ 1 g/mol = 12.09 mol H

149.83 g As ÷ 74.92 g/mol = 2.00 mol As

Those amounts of moles represent the amount of each component in 1 mol of cacodyl, thus, the molecular formula of cacodyl is C₄H₁₂As₂.

3 0

3 years ago

An atom is neutral. Its nucleus contains two protons and two neutrons. How

garri49 [273]

Answer:

we need to know which atom you're talking about and then you need to say what the mass number is then we can tell how many electrons there are.

(I think)

3 0

3 years ago

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Which of these represents a compound ? * Water Hydrogen Oxygen

fiasKO [112]

Answer:

water

Explanation:

H2O

8 0

3 years ago

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