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9 months ago

Compared with the energy it takes to separate oxygen and hydrogen from water, how much energy is released when they recombine?.

Chemistry

1 answer:

katrin2010 [14]9 months ago

8 0

The same amount of energy released when they recombine

Yes, the energy required to separate water into O2 and H2 is at least equal to the energy released when these gases come together to form water.

<h3>What is the process for separating water into it's constituents ?</h3>

The process of separating water into hydrogen and oxygen is known as electrolysis. This reaction occurs in a device known as an electrolyzer.

This is around 260 kJ per mole of water, or just under 5 eV per water molecule (4 electrons times 1.23 V). One litre of water would require at least 16 MJ (4.4 kWh) in order to be split, which is more energy than would be required to send one litre of water into deep space.

Learn more about Electrolysis here:

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In which pair do both compounds exhibit predominantly ionic bonding?

klasskru [66]

Answer:

In pair NaF and H2O both compounds exibit predominantly ionic bonding.

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2 years ago

Use the law of conservation of mass to answer the questions.

irinina [24]

Answer:

$\boxed {\boxed {\sf 28 \ grams}}$

Explanation:

The Law of Conservation of Mass states that mass cannot be created or destroyed.

In terms of a chemical reaction, the mass of the reactants has to equal the mass of the products.

The reactants are A and B. The mass of A is 19 grams and the mass of B is 24 grams. Add the masses.

19 g + 24 g= 43 g

This is the mass of the reactants.

The products and C and D. The mass of C is 15 grams. The mass of the products has to equal the mass of the reactants, which is 43 grams. Subtract 15 from 43 to find D's mass.

43 g - 15 g= 28 g

28 grams of D will be produced.

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2 years ago

If the IMA of a machine is 2 and the effort force is 50 newtons, then the force applied to the resistance is ___________ N

GalinKa [24]

Answer:

100N

Explanation:

Given Required

Effort force = 50N Force applied to a resistance = ??

Ideal Mechanical Advantage (IMA) = 2

Solution

Force applied to a resistance = Effort force x Ideal Mechanical Advantage (IMA)

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1 year ago

On a piece of paper, draw the structure of

Damm [24]

Answer:

The cis-4-nonene molecule contains a total of 26 bonds. There are 8 non-H bonds, 1 multiple bond, 5 rotary bonds, and 1 double bond.

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It is called the cis isomer since it has the hydrogens on the same side in the double bond.

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3 years ago

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What property of water allows water to work as a universal solvent?

fgiga [73]

Answer:

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3 years ago