It can be calculated by dividing Molar mass (M) by mass density (ρ). **One mole** of any gas at a particular temperature and pressure has fixed **volume** and known as its Molar gas **volume**. Where V_{m} is the **volume** of the substance. 1 **mole** of gas at STP = 22.4 liters of gas.

**See full answer to your question here. Besides, how do you find the volume of a single water molecule?**

So, all you have to do is know that 18 grams of **water** occupies 18 cc (because it’s density is 1.0 gram/cc). Thus, you know that 6.023 x 10^23 **molecules** of **water** occupy 18 cc. So, just divide 18cc/mole by 6.023 x 10^23 **molecules** /mole ( the moles will cancel out) and you’ll have your answer in cc/**molecule** of **water**.

Also Know, how do you determine the size of an oil molecule? Divide the thickness of the **oil** (step four) by the **size** of an atom to **find the size of an oil molecule**. In this example, the thickness of an **oil molecule** is 10 atoms.

**Similarly, it is asked, how many molecules are in a liter?**

The atomic mass of water is 18 grams per mole. Therefore, one **liter** of water contains 1000 grams * (1 mole / 18 grams) = 55.56 moles of water. Because there are 6.022 * 10^23 **molecules** in a mole, the number of **molecules** of water in a **liter** is (6.022 * 10^23) * 55.56 = approximately 3.345 * 10^25 **molecules** of water.

## How many molecules are there?

Avogadro’s number is a very important relationship to remember: 1 mole = 6.022×1023 6.022 × 10 23 atoms, **molecules**, protons, etc. To convert from moles to atoms, multiply the molar amount by Avogadro’s number. To convert from atoms to moles, divide the atom amount by Avogadro’s number (or multiply by its reciprocal).

What is the volume of 1 gram of water?

### How many moles are in 1 ml of water?

Hydrogen has an atomic weight of **1** and oxygen has an atomic weight of 16. The **water** has a molecular weight of 18. The liter of **water** has 1000 grams. The number of **moles** is 1000/18 = 55.556 **moles**.

### What is the volume occupied by 1 mole of water?

The **volume occupied by one mole of water** is. (density = **1** g/ml)?

### How many moles are in water?

A **mole** is a convenient counting unit whenever one is dealing with numbers of atoms or molecules. It is equal to Avogadro’s number (NA), namely 6.022 x10^{23}. If we have one **mole** of **water**, then we know that it will have a mass of 2 grams (for 2 **moles** of H atoms) + 16 grams (for one **mole** O atom) = 18 grams.

### How many moles are in 5ml of water?

Hydrogen has a molecular weight of 1 and oxygen has a molecular weight of 16 so adding you get that a **mole** of **water** has a mass of 18 grams. Avogadro’s number (6.022 x 10 ^23) is the number of molecules in a **mole**. Now **5 ml** has a mass of 5 gram

### How many moles of H atoms are in 7.2 grams of water?

Explanation: **Water** has a molar mass of 18.01528 **g**/**mol**≈18 **g**/**mol** . Since **water** has a chemical formula of **H**2O , there will be 2 **moles of hydrogen** in every **mole** of **water**.

### What is the size of a molecule of water?

**Water** is an incredible small **molecule** when compared other **molecules**. It’s approximate diameter is 2.75 angstroms. There is 100 picometers to 1 angstrom so this is 275 picometers or 0.275 nanometers.

### How many moles are in h2o?

The average mass of one H2O molecule is 18.02 amu. The number of atoms is an exact number, the number of mole is an exact number; they do not affect the number of significant figures. The average mass of **one mole** of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol.

### How many grams are in a liter?

### How do you determine concentration?

The standard formula is C = m/V, where C is the **concentration**, m is the mass of the solute dissolved, and V is the total volume of the solution. If you have a small **concentration**, **find** the answer in parts per million (ppm) to make it easier to follow.

### What is STP in chemistry?

**STP in chemistry** is the abbreviation for Standard Temperature and Pressure. **STP** most commonly is used when performing calculations on gases, such as gas density. The standard temperature is 273 K (0° Celsius or 32° Fahrenheit) and the standard pressure is 1 atm pressure.

### How many molecules are in a room?

You can calculate **how many molecules** there are in a **room**, (4m x 3m x 3m = 24 m^{3}) giving about 5 x 10^{26} **molecules**. This is in fact an estimate of the Avogadro number for a kilo-mole. A kilogram mole of any gas contains 6 x 10^{26}**molecules**.