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The mass of any molecule is equal to the sum of the Atomic Mass Units of all of its constituent atoms. Atomic Mass Unit values may be found on any Periodic Table. In this case, a water molecule consists of two Hydrogen atoms and one Oxygen atom. Hydrogen has a mass of approximately 1 AMU. Oxygen has a mass of approximately 16 AMU. Therefore, the mass of one molecule of water is approximately 18 AMU (or 18.01528 AMU exactly). What does this number mean? If you had exactly 6.022 x 10^23 molecules of water, it would weigh 18 grams.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoYou calculate it by using Avogadro's number: 6.022 x10 23 which is one mole of substance.
1.00 x 1024 divided by 6.022 x 1023 = 10 divided by 6.022 = 1.661 mol H2O
Use the molar mass of water (18.02 g mol-1) to get to the mass in grams.
18.02 g x 1.661 mol = 29.93 g H2O
Wiki User
∙ 13y ago1 molecule of water is the smallest thing water can be physically broken down to without changing its chemical formula... It consists of one oxygen and two hydrogen molecules. It weighs 18/(6.02 * 10^22) g
Wiki User
∙ 14y agoSince 6.02 x 1023 molecules is a mole, 1.00 x 1024 would be 1.66 moles.
Water has the mass of: (1.00794 g/mol x 2) + 15.994 g/mol = 18.009 g/mol
1.66 mol x 18.009 g/mol = 29.92 g
Wiki User
∙ 12y agoThe molecule would normally have an atomic weight of 17, unless there were isotopes in the molecule.
Wiki User
∙ 9y agoA water molecule is made of two hydrogen atoms attached to an oxygen atom. Their atomic masses are 1 and 16 respectively. So the molecular mass of water is 2x1+16=18 grams per mole.
Wiki User
∙ 11y ago18 atomic mass unit or 18 gms
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How much water is in a 1kg of ice?
The density of ice is 0.9167 g/cm³ (cm³=ml) at 0°C at tmospheric pressure. Thus, 1kg of ice contains 1.091 Litre of water. Answer by TCY.
Why does not the electron in a beam from an electron gun falls as much under gravity as a water molecule in a stream from a hose?
Because the electron, in effect has no (or very little atomic) mass and is travelling at near light speed, while the molecule of water (H20) has a relatively large atomic mass and is traveling at a much lower velocity (5 to 10 meters per second). This of course, as postulated in the question, relates only to gravitational affect and neglects drag caused by air resistence.
How much is in a kilogram at water?
A liter of water has a mass of about one kg.
How much does 54 liters of water weigh?
The generally accepted mass of water is 1kg per litre, so 54 litres would weigh in at 54kg
Why is it that when you add pressure to a bottle it increases its mass?
when you add pressure to a molecule it increases because pressure is like gas and when there is to much gas it has to expand.
How much ocean water is in a molecule?
A molecule of water has a mass of 18 amu.
How much mass does a water molecule have?
Approximately 18.16 units
How much does one water molecule weight?
The mass of any molecule is equal to the sum of the Atomic Mass Units of all of its constituent atoms. Atomic Mass Unit values may be found on any Periodic Table. In this case, a water molecule consists of two Hydrogen atoms and one Oxygen atom. Hydrogen has a mass of approximately 1 AMU. Oxygen has a mass of approximately 16 AMU. Therefore, the mass of one molecule of water is approximately 18 AMU (or 18.01528 AMU exactly). What does this number mean? If you had exactly 6.022 x 10^23 molecules of water, it would weigh 18 grams.
What does the mass of an element tell you about a molecule?
it tells you how much of the molecule the element is
What does the mass percent of an element tell you about molecule?
it tells you how much of the molecule the element is
What does mass percent of an element tell you about a molecule?
it tells you how much of the molecule the element is
How much iron will be present in one molecule of hemoglobin if hemoglobin has 0.25 percent by mass iron and the molecular mass of hemoglobin is 89600u?
If a quarter of the mass of the molecule is iron and the mass of the molecule is 89600u, then the mass of iron is 22400u ... a quarter of the total mass.
What does the mass per element tell you about a molecule?
These informations add knowledge about the chemical composition of a molecule and the molar mass.
What does percent composition tell you about a molecule?
Percentage composition= (mass of the element/mass of the molecule)*100 The fraction of the molecule's mass that comes from the element's mass
How much mass would 175ml of water have?
At 4 degrees C, 175 ml of pure water would have mass of 175 g.
A person has a pumpkin that has a mass of 4.8 kilograms If 0.9 of its mass is water how much of its mass is water and how much of its mass is not water?
3.6
If you were a water molecule in a glass of water how would you best describe your relationship with the water molecules around you?
Bonded hydrogenially, but with much surface tension.
