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2 years ago

Water has a formula of H2O. Based on the formula which is NOT a correct statement?

Chemistry

2 answers:

Sindrei [870]2 years ago

8 0

Answer:

A.water is a molecule

Explanation:

water is a molecule not a element

ELEN [110]2 years ago

3 0

Answer: A. It is an element.

Explanation: An element cannot be broken down into simpler substances. For example, oxygen and hydrogen are elements.
A compound is two or more elements joined by electrons. Water is a compound.
The formula for water is H2O, which can be read as “two hydrogen atoms and one oxygen atoms.” Therefore, water contains both oxygen and hydrogen.

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3 years ago

What is the pH of 2.0 M nitrous acid at equilibrium (Ka= 4.6×10-4)?

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3 years ago

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What particles in an atom are involved in nuclear reactions

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Explanation:

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3 years ago

Which of the following is a synthetic organic material?

Rudik [331]

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Plastic is the result of the addition polymerization of poly(alkenes). Thus plastic is a synthetic organic material.

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3 years ago

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How many moles are present in

olasank [31]

Answer: (a) There are 0.428 moles present in 12 g of $N_{2}$ molecule.

(b) There are 2 moles present in $12.044 \times 10^{23}$ particles of oxygen.

Explanation:

(a). The mass of nitrogen molecule is given as 12 g.

As the molar mass of $N_{2}$ is 28 g/mol so its number of moles are calculated as follows.

$No. of moles = \frac{mass}{molar mass}\\= \frac{12 g}{28 g/mol}\\= 0.428 mol$

So, there are 0.428 moles present in 12 g of $N_{2}$ molecule.

(b). According to the mole concept, 1 mole of every substance contains $6.022 \times 10^{23}$ atoms.

Therefore, moles present in $12.044 \times 10^{23}$ particles are calculated as follows.

$Moles = \frac{12.044 \times 10^{23}}{6.022 \times 10^{23}}\\= 2 mol$

So, there are 2 moles present in $12.044 \times 10^{23}$ particles of oxygen.

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3 years ago