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Sholpan [36]
3 years ago
15

Energy that is stored is called potential energy. Take a round ball that is at rest at the top of the hill. The ball has a lot o

f potential energy, but no kinetic energy because it is not moving. Once the ball is released and it begins to roll, the potential energy the ball had initially is transformed into kinetic energy. The higher the ball is placed, the ____ potential energy it will have.
A-more B-less
Chemistry
1 answer:
kodGreya [7K]3 years ago
6 0
The question says that when the ball is placed at the top of the hill it has a lot of potential energy. So I think the higher a ball is placed the more potential energy it will have
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svetlana [45]

Since the mass of a single popcorn kernel is not given, lets us assume that it is 1 gram

Now:

1 mole of popcorn kernels contain 6.023 * 10^{23} kernels

Since:

1 kernel weighs 1 gram

Then,

1 mole = 6.023 *10^{23} kernels would weigh 6.023 * 10^{23} grams

4 0
4 years ago
Read 2 more answers
1. When an acid reacts with a base, what compounds are formed? (1 point) a salt only water only metal oxides only a salt and wat
scoundrel [369]

Answer: 1) only a salt and water

An acid and base reacts together to undergo neutralization to form salt and water.

HCl+NaOH\rightarrow NaCl+H_2O

where HCl is an acid and NaOH is a base to form salt (NaCl) and water (H_2O).

Answer: 2) The formula of the hydrogen ion is often written as H^+.

All acids dissociate in water to give  H^+ ions.

Answer: 3) Arrhenius acids are substances that ionizes to yield protons in aqueous solution.

HCl\rightarrow H^++Cl^-

Arrhenius bases are substance that ionizes to yield hydroxide ions in aqueous solution.

NaOH\rightarrow Na^++OH^-

Answer: 4) A conjugate acid base pair  transfers hydrogen ion.

CH_3COO^-+H_2O\rightarrow CH_3COOH+H_3O^+

Here CH_3COO^- accepts a proton and thus act as a base and the corresponding CH_3COOH is its conjugate acid.

Answer: 5) Bronsted Lowry acid is a substance that donates protons.  Bronsted Lowry base is a substance that accepts protons.

NH_4^+ and NH_3

NH_3+H^+\rightarrow NH_4^+

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4 0
3 years ago
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A worker at a nuclear power plant has noticed that his dosimeter alarm has
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Answer:

Radiation is being released from the reactor.

Explanation:

( A P E X )

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3 years ago
Describe the day of June 21 at the North Pole in terms of daylight and darkness <br> ( science )
frosja888 [35]
On June 21, as seen from the North pole ...

-- the sun has been up, and it's been light outside,
for the past three months ... ever since March 21 . 

-- The sun won't set, and it won't be dark outside,
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-- Here at the North pole, it stays daylight for six months straight.
Today, on June 21, we're exactly halfway through the period of
continuous daylight.
7 0
3 years ago
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nlexa [21]

Answer:

2:a-heterogenous

b-homogenous

c-heterogenous

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3:Filtration is used to separate insoluble particles from a solution

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Explanation:

2: homogenous mixtures form a uniform layer meaning that a mixture containing more than one layer is heterogenous

4 0
4 years ago
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