Question

Determine the number of molecules in the formula 5H2o

Answer 1

total molecules

Answer 2

Determine the total number of atoms for the following formula CaCO3

Answer 3

Determine the number of molecules for the following formula 7CO3

Answer 4

In the formula \( 5H_2O \), the "5" refers to the number of water molecules. Therefore, there are 5 molecules of water in the formula \( 5H_2O \).

Answer 5

To determine the total number of molecules represented in the formula \(5H_2O\):

- Each water molecule (\(H_2O\)) consists of 3 atoms (2 hydrogen atoms and 1 oxygen atom).
- If you have 5 water molecules, then the total number of molecules is simply 5 (as indicated by the coefficient).

Thus, the total number of water molecules in \(5H_2O\) is **5 molecules**.

If you are looking for the total number of atoms in \(5H_2O\), here's how to calculate it:

- Each \(H_2O\) contains:
- 2 hydrogen (H) atoms
- 1 oxygen (O) atom

So for \(5H_2O\):
- Total hydrogen atoms = \(5 \times 2 = 10\) hydrogen atoms
- Total oxygen atoms = \(5 \times 1 = 5\) oxygen atoms

Now, adding the atoms together:
- Total atoms = \(10\) (H) + \(5\) (O) = **15 atoms**.

In summary:
- **Number of molecules**: 5
- **Total number of atoms**: 15

Answer 6

In the formula \( \text{CaCO}_3 \) (calcium carbonate), you can determine the total number of atoms by identifying the individual elements and their quantities.

1. **Calcium (Ca)**: 1 atom
2. **Carbon (C)**: 1 atom
3. **Oxygen (O)**: 3 atoms

Now, to find the total number of atoms:

\[
\text{Total atoms} = \text{Ca} + \text{C} + \text{O} = 1 + 1 + 3 = 5
\]

Thus, the total number of atoms in \( \text{CaCO}_3 \) is **5 atoms**.

Answer 7

In the formula \( 7CO_3 \), the "7" indicates that there are 7 carbonate ions (\( CO_3^{2-} \)).

Therefore, the number of molecules in \( 7CO_3 \) is simply **7 carbonate ions**. Each \( CO_3 \) represents one carbonate ion, so you have 7 carbonate ions in total.

To summarize, the number of molecules is **7**.