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3 years ago

A sample of c3h8o that contains 200 molecules contains __________ carbon atoms.

Chemistry

2 answers:

larisa86 [58]3 years ago

5 0

<u>Answer:</u> The number of carbon atoms in 200 molecules of given sample is 600 atoms.

<u>Explanation:</u>

We are given a chemical compound having chemical formula $C_3H_8O$

In 1 molecule of $C_3H_8O$ , 3 atoms of carbon, 8 atoms of hydrogen and 1 atom of oxygen are present.

We need to calculate the number of carbon atoms in 200 molecules of the sample.

So, in 200 molecules of $C_3H_8O$ , the number of carbon atoms are = $(3\times 200)=600$ atoms.

Hence, the number of carbon atoms in 200 molecules of given sample is 600 atoms.

Vesna [10]3 years ago

4 0

The answer is 600. A sample of C3H8O which contains two hundred molecules, it also holds six hundred carbon atoms. A carbon atom holds six electrons, four of its electrons are found in its valence shell or also known as its outer shell.

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How many moles are in 5.5 x 10-23 molecules of H2O

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Explanation:

The number of moles in a substance can be got by dividing the number of atoms/molecules/particles by Avagadro's constant (6.02 × 10^23).

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number of moles (n) = number of atom (nA) ÷ 6.02 × 10^23

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n = 5.5 x 10^23 ÷ 6.02 × 10^23

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n = 0.914 × 10^0

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amm1812

Answer: Water is a permanent electric dipole, having permanent charge separation.

Explanation:

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2 years ago

4HCl(g)+O2(g)⟶2Cl2(g)+2H2O(g) Calculate the number of grams of Cl2 formed when 0.385 mol HCl reacts with an excess of O2. mass:

FromTheMoon [43]

The number of grams of Cl2 formed when 0.385 mol HCl reacts with an excess of O2 is 13.6675 g.

<h3>What are moles?</h3>

A mole is defined as 6.02214076 × $10^{23}$ of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Given data:

Moles of hydrochloric acid = 0.385 mol

Mass of chlorine gas =?

Chemical equation:

4HCl + O₂ → 2Cl₂ + 2H₂O

Now we will compare the moles of Cl₂ with HCl.

HCl : Cl₂

4 : 2

0.385 : 2÷4× 0.385 = 0.1925 mol

Oxygen is present in excess that's why the mass of chlorine produced depends upon the available amount of HCl.

Mass of Cl₂ :

Mass of Cl₂ = moles × molar mass

Mass of Cl₂ =0.1925 mol × 71 g/mol

Mass of Cl₂ = 13.6675 g

Hence, the number of grams of Cl2 formed when 0.385 mol HCl reacts with an excess of O2 is 13.6675 g.

Learn more about moles here:

brainly.com/question/8455949

#SPJ1

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2 years ago