Please help as soon as possible!!!

Chemistry

1 answer:

Delicious77 [7]2 years ago

6 0

Answer:

the kidney control the amount of water, ion, and other substances in the blood by excreting more or less of them in urine, also secretes the hormones that help maintain homeostasis

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Given what you observe at the molecular/atomic level, why would surface area have this effect?

LenKa [72]

Answer:

Increasing the surface area of a reactant increases the frequency of collisions and increases the reaction rate. Several smaller particles have more surface area than one large particle. The more surface area that is available for particles to collide, the faster the reaction will occur.

Explanation:

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2 years ago

How many liters of salt solution will be needed to provide 15 grams of salt if the concentration of the solution is 50 g/l?

asambeis [7]

Answer:

.30 l

Explanation:

15g/50g/l= .3l

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2 years ago

What does variable mean

DedPeter [7]

In an experiement things that are changing are called variables.

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3 years ago

Why do some elements (ex: Neon) have a large number of spectral lines, compared to Hydrogen?

Doss [256]

The production of absorption and emission lines . The first theory of the atom to provide an explanation of hydrogen's observed spectral lines those two energy levels, the electron can exist only in certain sharply defined . The number of protons in the nucleus of an atom determines the element that

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2 years ago

34 atoms of carbon react with 22 molecules of hydrogen gas. How many molecules of methane will be formed & what will be left

pychu [463]

Each carbon atom will react with 4 hydrogen atoms to form methane ( $C H_{4}$ ) Since there are 2 hydrogen atoms in a hydrogen molecule ( $H_{2}$ ) then each carbon atom will react with 2 hydrogen molecules. Since there are 22 hydrogen molecules half as many methane molecules will be formed, so 11. Then we can subtract 11 from 34 to find the number of carbon atoms left over.

So in summary, 11 methane molecules will be formed and there will be 23 carbon atoms left over.

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3 years ago

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