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Waters high specific heat is mainly a consequence of?
Water has a high specific heat capacity because it is a relatively light molecule (18 grams per mole). The specific heats of molecules are all about the same on a per-molecule basis, especially at higher temperatures. This is called the law of Dulong and Petit. At low temperatures, it gets more complicated because the vibrations of molecules are quantized. When specific heats are measured on a per-gram basis, lighter molecules have higher specific heats. For example, the specific heat of hydrogen (H2), which has a molecular weight of 2 grams per mole, is much higher than that of water. Liquid water has a higher specific heat than most other liquids (such as alcohols) because its molecules are lighter.
Why does soap stick to water?
Soap molecules are opposing. While one end tends to stick to water, the opposite end repels it. Suds are caused by this action. Soap molecules surround water molecules, and the parts of the molecules that repel the water point in a direction away from the water.
How much does water expand when it freezes?
water exspands 25milimeters. ----------------------------------------------------------- The answer above is not correct. The expansion of water after freezing is approx. 9 %. This phenomenon is due to the fact that hydrogen bonds between water molecules are stronger at low temperatures.
What happens when you turn a gas to a liquid?
A gas changing to a liquid is considered "condensation".A most common examples of condensation is the forming of little water droplets on the side of a bottle of water grabbed directly from the refrigerator on a hot day.
How many atoms make 1 pound?
1 mole of anything always contains 6.022*1022 things; therefore, 1 mole contains 6.022*1022 atoms.
How much mass would a mole of nitrogen molecules contain?
One mole of nitrogen molecules contains approximately 28 grams (since the atomic mass of nitrogen is approximately 14 g/mol).
How much water, in the form of H2O molecules, is present in 6 moles of a substance?
6 moles of a substance contain about 3.6 x 1024 water molecules.
How much molecules of water does one mole contain?
Let's calculate this:Water density is: 1g/ml1ml * 1g/ml = 1g of water in 1 ml.Next,Water molecular weight, about: 18g/mol1g * 1mol/18g = 1/18 moles = about 0.056 moles in 1ml (=1g) of water.This can be done in one step as:1ml * 1g/1ml *1mol/18g = 1/18 moles of waterCheers,Me
What is the Avogadro's number for water?
The Avogadro's number represents the number of particles, such as molecules or atoms, in one mole of a substance. For water (H2O), the Avogadro's number is approximately 6.022 x 10^23, which means that one mole of water contains 6.022 x 10^23 water molecules.
How much water in grams can be made from 1.95 and times 1024 hydrogen molecules Answer in units of g.?
The molar mass of water is 18.015 g/mol. So, 1.95 x 10^24 hydrogen molecules would yield 1.95 x 10^24 water molecules. This corresponds to 1.95 x 10^24 x 18.015 g of water, which is approximately equal to 3.51 x 10^25 g of water.
One centimeter cube of methane at STP will have how much molecules?
One centimeter cube of methane at STP will contain approximately (2.42 \times 10^{19}) molecules. This is because one mole of any gas at STP occupies 22.4 liters, so 1 cm^3 of methane is equal to (1/(22.4 \times 10^6)) moles, and a mole of methane contains 6.022 x 10^23 molecules.
How many molecules of NaCl are in the 1 M NaCl solution?
It depends on how much solution you have!"1 molar solution" means that 1 litre of the solution contains 1 mole of solute (in this case, Na+ and Cl- ions). Therefore, 1 litre of 1M NaCl will contain 1 mole of sodium chloride. 1 mole is avagadro's number (6.02x1023) of a substance. If you have two litres of solution, obviously, you will have twice this number, for example.Note, though, that there are NO molecules of sodium chloride - sodium chloride is not a molecular substance.
How much hydrogen is in a cup of water?
There is no molecular hydrogen (H2) naturally present in a cup of water. However, water molecules (H2O) contain two hydrogen atoms per molecule.
Do food molecules contain water?
Practically all food contains some water, because the source of the food (plants, animals) was water-based organic life. It is possible to remove much of this water, often to preserve the food.
What is the difference in water molecules in warm water and cold water?
The molecules in warm water are moving quicker, meaning that the hydrogen bonds between the molecules are breaking very quickly whereas the molecules in cold water are moving much slower.
How much atoms in two molecules of water?
6 Water= H20 which represents one molecule. Which is 2 parts Hydrogen and 1 part Oxygen which would be 3 parts (atoms). So if it's TWO molecules of water, it doubles.
What does not contain calories?
water is pretty much it
