How do hydrogen bonds between water molecules occur?

Answers

Answer 1

Answer:

Hydrogen bonds between water molecules occur because of the polarity of the water molecule.

A hydrogen bond is a weak bond that forms between a hydrogen atom that is covalently bonded to a highly electronegative atom and another highly electronegative atom in the same or a different molecule.

A water molecule consists of two hydrogen atoms and one oxygen atom. The hydrogen atoms are bonded to the oxygen atom, but the electrons in the covalent bonds are not shared equally. This results in a partial negative charge on the oxygen atom and a partial positive charge on the hydrogen atoms.

When two water molecules are close together, the partial positive charge on one hydrogen atom is attracted to the partial negative charge on the oxygen atom of the other molecule. This attraction is called a hydrogen bond.

Therefore, due to polarity of the water molecule, it results into hydrogen bonds between water molecules.

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Answer 2

Answer: Hydrogen bonds between water molecules occur through the attraction of hydrogen atoms and oxygen atoms of water molecules. For example, one water molecule's hydrogen atom will bond with the oxygen atom of another water molecule.

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What is visible light?

Answers

It’s the portion of the electromagnetic spectrum that is viable to the human eye.

Hope this helps! :)

How many grams of potassium chloride are produced if 25g of potassium chlorate decompose.

Answers

Answer:15 g KCl

Explanation: 2KClO3->2KCI+3O2

Answer:

2.05

Explanation:

The molar mass of CO2 is 44.01 g/mol. Which is the mass of 3.21×1025 molecules of CO2

Answers

Given:

Molar mass of CO2 = 44.01g/mol

3.21x10^25 molecules of CO2

Required:

Mass of CO2

Solution:

Avogadro’s number states that for every mole of atom, there are 6.023x10^23 units of atom. The units may be formula units, atoms. In here, you need to divide 3.21x10^25 molecules of CO2 to 6.023x10^23 molecules per mole.

3.21x10^25 molecules of CO2 / 6.023x10^23 molecules per mole = 53.30 moles CO2

53.30 moles CO2 (44.01g/mol CO2) = 2346 g of CO2

What organisms appeared on Earth First?a). gastropods
b). horn corals
c). brachiopods
d). crinoids

Answers

it is B because horn coals are bigger and I read it in a book

17. How many moles are there in a sample containing 1000 molecules of H2O?18. If you wanted a sample of H2O containing 6 x 23molecules, how could you measapproximate number without counting?

Answers

17) mol of $H_(2)O$ = $(no. of molecule)/(L)$
= $(1000 molecules)/(6.03 * 10^(23) molecules/mol )$
= 1.658 *    $10^(-21) mol$

18) mol = $(molecule)/(L)$
   $(Mass)/(Mr) = (Molecule)/(L)$
Let mass of oxygen = x
   $(x)/((2 * 1) + (16)) = (6 * 10^(23) )/(6.03 * 10^(23) )$
$x = (6 * 10^(23) ) (18 g/ mol)$
= 17.9 g

Research into nuclear fusion will likely require a large investment of time and money before it might be used as an energy source. Which statement best describes the benefits that would make the investment worthwhile?
Fusion requires a large amount of energy and occurs in stars.
Fusion produces large amounts of energy, and the fuel is found on Earth.
Fusion produces no radioactive waste, and the fuel is plentiful.
Fusion requires little energy to begin and would continue through a chain reaction.

Answers

The statement that best describes the benefits that would make the investment worthwhile is C. Fusion produces no radioactive waste, and the fuel is plentiful.

What is Nuclear Fusion?

This refers to the nuclear reaction that occurs when atomic nuclei combine to form subatomic particles.

Hence, we can see that from the given excerpt, it is stated that the research into nuclear fusion would need a large investment and the benefit of this is found in option C.

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The statement that best describes the benefits that would make the investment worthwhile is as follows: fusion produces large amounts of energy, and the fuel is found on Earth.

What is nuclear fusion?

Nuclear fusion is the act of combining the nuclei of small atoms to form the nuclei of larger ones, with a resulting release of large quantities of energy.

According to this question, research into nuclear fusion will likely require a large investment of time and money before it might be used as an energy source.

However, a beneficial property of nuclearfusion that makes the investment worthwhile is that fusion produces large amounts of energy, and the fuel is found on Earth.

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