Q. How many atoms are in \(\mathrm{CH_4}\)?

Q: How many atoms are in one molecule of methane, \mathrm{CH_4} ?

Methane \mathrm{CH_4} has 1 carbon atom and 4 hydrogen atoms, so 1+4=5 atoms total.

Q: How many hydrogen atoms are in \mathrm{CH_4} ?

The subscript 4 in \mathrm{CH_4} means there are 4 hydrogen atoms.

Q: How many carbon atoms are in \mathrm{CH_4} ?

The \mathrm{C} has an implied subscript of 1 in \mathrm{CH_4} , so there is 1 carbon atom.

Q: If I have 2 molecules of \mathrm{CH_4} , how many total atoms is that?

Each \mathrm{CH_4} has 5 atoms, so 2 \times 5 = 10 total atoms.

Q: How do I find total atoms in a general formula \mathrm{C_mH_n} ?

Total atoms per molecule are m+n, since m carbon atoms and n hydrogen atoms are present.

Q: Does “atoms in \mathrm{CH_4} ” mean per molecule or per mole of methane?

Usually it means per molecule. Per molecule: 5. Per mole: compute atom count using Avogadro’s number after converting moles of molecules.

Q: How many atoms are in 1 mole of \mathrm{CH_4} ?

5 atoms per molecule. So atoms =5N_A, where N_A is Avogadro’s number.

Answer

In methane, \( \text{CH}_4 \), there is \(1\) carbon atom and \(4\) hydrogen atoms. Total atoms \(= 1 + 4 = 5\).

\(5\) atoms.

Detailed Explanation

To find how many atoms are in \( \text{CH}_4 \), you count the atoms of each element in the chemical formula.

Step 1: Understand what the formula means.

\( \text{CH}_4 \) contains two kinds of atoms:

\(\bullet\) One carbon atom, because there is no number written before C (so the coefficient is understood to be \(1\)).

\(\bullet\) Four hydrogen atoms, because the subscript “4” after H means \(4\) hydrogen atoms.

Step 2: Add the total atoms.

The total number of atoms is:

\[ \text{Total atoms} = 1\ (\text{C}) + 4\ (\text{H}) = 5 \]

Answer:

\( \text{CH}_4 \) has 5 atoms in total.

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General Chemistry FAQs

How many atoms are in one molecule of methane, \( \mathrm{CH_4} \)?

Methane \( \mathrm{CH_4} \) has \(1\) carbon atom and \(4\) hydrogen atoms, so \(1+4=5\) atoms total.

How many hydrogen atoms are in \( \mathrm{CH_4} \)?

The subscript \(4\) in \( \mathrm{CH_4} \) means there are \(4\) hydrogen atoms.

How many carbon atoms are in \( \mathrm{CH_4} \)?

The \( \mathrm{C} \) has an implied subscript of \(1\) in \( \mathrm{CH_4} \), so there is \(1\) carbon atom.

If I have \(2\) molecules of \( \mathrm{CH_4} \), how many total atoms is that?

Each \( \mathrm{CH_4} \) has \(5\) atoms, so \(2 \times 5 = 10\) total atoms.

How do I find total atoms in a general formula \( \mathrm{C_mH_n} \)?

Total atoms per molecule are \(m+n\), since \(m\) carbon atoms and \(n\) hydrogen atoms are present.

Does “atoms in \( \mathrm{CH_4} \)” mean per molecule or per mole of methane?

Usually it means per molecule. Per molecule: \(5\). Per mole: compute atom count using Avogadro’s number after converting moles of molecules.

How many atoms are in \(1\) mole of \( \mathrm{CH_4} \)?

\(5\) atoms per molecule. So atoms \(=5N_A\), where \(N_A\) is Avogadro’s number.

Count atoms per CH₄ molecule.
Find 5 total atoms in each.

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