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how many molecules make up water

by Roselyn Ratke DVM Published 3 years ago Updated 3 years ago

Avogadro

Amedeo Avogadro

Amedeo Carlo Avogadro, Count of Quaregna and Cerreto, was an Italian scientist, most noted for his contribution to molecular theory now known as Avogadro's law, which states that equal volumes of gases under the same conditions of temperature and pressure will contain equal num…

's number tells us there are 6.022 x 10 23 molecules of water per mole of water. So, next we calculate how many molecules there are in a drop of water, which we determined contains 0.002775 moles: molecules in a drop of water = (6.022 x 10 23 molecules/mole) x 0.002275 moles molecules in a drop of water = 1.67 x 10 21 water molecules

For example: H2O has two hydrogens and one oxygen. The atomic mass of hydrogen is 1.0078 and the atomic mass of oxygen is 15.999, so the mass of a mole of water is 2 x 1.0078 + 15.999. Therefore, a mole of water, or 6.022 x 1023 molecules, weighs 18.0146 grams.Dec 4, 2021

Full Answer

How many molecules are in one mole of water?

Mole (unit) Thus, for example, one mole of water contains 6.02214076×10 23 molecules, whose total mass is about 18.015 grams – and the mean mass of one molecule of water is about 18.015 daltons. The mole is widely used in chemistry as a convenient way to express amounts of reactants and products of chemical reactions.

How many molecules are in 100ml of water?

How many water molecules are in a kg of water? Figure out how many water molecules there are in 1 kg of water. (Hint: The atomic mass of water is 18D* and Avogadro’s number is ~ 6 x 1023 molecules/mole.) Since 1 kg of water has 1000 g, that corresponds to 1000/18 moles. That would have (103/18) x (6 x 1023) ~ 3 x 1025 molecules of water.

How many water molecules are there in the balanced equation?

The equation is now balanced, and there are no fractional coefficients: there are 7 carbon atoms, 16 hydrogen atoms, and 22 oxygen atoms on each side. Always check to be sure that a chemical equation is balanced.

How many molecules are there in a drop of water?

The accepted average volume of a drop of water is exactly 0.05 mL (20 drops per milliliter). It turns out there are over 1.5 sextillion molecules in a drop of water and more than 5 sextillion atoms per droplet. How many molecules are there in one mole of water?

What molecules make up water?

A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom.

What are the 3 molecules that make up water?

How is a water molecule built up? A water molecule consists of three atoms; an oxygen atom and two hydrogen atoms, which are bond together like little magnets.

What 2 molecules make up water?

A water molecule is made up of two hydrogen atoms and one oxygen atom.

How many molecules of water are represented in H2O?

There are therefore 6.02 × 10 23 water molecules in a mole of water molecules.Dec 22, 2021

How many atoms are in 2 water molecules?

Two water molecules contain 4 hydrogen atoms and 2 oxygen atoms.Dec 14, 2021

What does the 2 represent in h20?

The 2 is the subscript for H symbolises the presence of 2 Hydrogen atoms. Thus, we can say that there is hydrogen bonding in water. Therefore, water contains two hydrogen atoms and one oxygen.

Is one H2O molecule water?

Water may be a basic requirement for life on Earth, but the compound is far from simple. Although a single molecule of water is composed of one atom of oxygen bonded to two hydrogen atoms (H2O), a collection of purely H2O molecules exists only as a gas.May 2, 2019

How do you make H2O?

The actual reaction to make water is a bit more complicated: 2H2 + O2 = 2H2O + Energy. In English, the equation says: To produce two molecules of water (H2O), two molecules of diatomic hydrogen (H2) must be combined with one molecule of diatomic oxygen (O2). Energy will be released in the process.Dec 31, 2007

What is water chemistry?

Water Definition Water is a chemical compound consisting of two hydrogen atoms and one oxygen atom. The name water typically refers to the liquid state of the compound. The solid phase is known as ice and the gas phase is called steam. Under certain conditions, water also forms a supercritical fluid.Feb 6, 2020

How many molecules of water are in 1000g of water?

How many molecules of water are in 1000g of water? The liter of water has 1000 grams. The number of moles is 1000/18 = 55.556 moles. The number of molecules is therefore 6.022*1023 * 55.556 = 3.346*1025 molecules.Dec 21, 2021

How do you calculate water molecules?

Using the periodic table of the elements to find atomic weights, we find that hydrogen has an atomic weight of 1, and oxygen's is 16. In order to calculate the molecular weight of one water molecule, we add the contributions from each atom; that is, 2(1) + 1(16) = 18 grams/mole.

How many molecules of water are there in 54 gram of H2O?

1.8×1024 water molecules.Jun 25, 2018

What are the elements in water?

Drinking water usually contains chlorine, silicates, magnesium, calcium, aluminum, sodium, and trace amounts of other ions and molecules. Also, water dissolves itself, forming its ions, H + and OH -. A sample of water contains the intact water molecule along with hydrogen cations and hydroxide anions. Cite this Article.

What is the formula for water?

The molecular formula for water is H 2 O. One molecule of water consists of one oxygen atom covalently bonded to two hydrogen atoms . There are three isotopes of hydrogen. The usual chemical formula for water assumes the hydrogen atoms consist of the isotope protium (one proton, no neutrons). Heavy water is also possible, in which one or more ...

Is heavy water a molecule?

Heavy water is also possible, in which one or more of the atoms of hydrogen consist of deuterium (symbol D) or tritium (symbol T). Other forms of the chemical formula for water include D 2 O, DHO, T 2 O, and THO. It's theoretically possible to form TDO, although such a molecule would be extremely rare. Although most people assume water is H 2 O, ...

What are the elements that make up water?

What Elements Make up Water? The two elements that make up a molecule of water are hydrogen and oxygen; there are two hydrogen atoms and one oxygen atom, resulting in the chemical formula H2O. Hydrogen and oxygen bond together due to the number of electrons in their orbitals. An oxygen atom has six electrons in its second shell, ...

How many electrons are in an oxygen atom?

An oxygen atom has six electrons in its second shell, and a hydrogen atom has one electron in its first shell. A second shell is considered to be full at eight electrons, while a first shell is full at two electrons.

How does oxygen bond to hydrogen?

The oxygen atom bonds to the two hydrogen atoms through the use of covalent bonds, which allow the atoms to share their electrons. The oxygen atom has a full second shell, and the two hydrogen atoms have full first shells. ADVERTISEMENT.

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