CHEMISTRY HIGH SCHOOL

How does the Atomic theory
impact our understanding of the universe?

Answers

Answer 1
Answer:

Answer:Atomic theory established that all matter is made of tiny particles, a discovery that led to amazing scientific breakthroughs in areas from modern chemistry to nuclear energy.

Explanation:Atomic theory is the scientific theory that matter is composed of particles called atoms. Atomic theory traces its origins to an ancient philosophical tradition known as atomism.

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A sample of nitrogen occupies 10.0 liters at 25°C and 98.7 kPa. What would be the volume at 20°C and 102.7 kPa?
WILL GIVE BRAINLEST!!Question 5 Coastal flooding occurs when_A. Rocks or debris block rivers causing them to overflowB. Severe weather occurs causing large waves to hit the coast C. Huge amounts of snow and ice melt due to sudden temperature variations D. Colossal amounts of rain fall in a short period of time​
In 1 kilogram of pure water, the mass of hydrogen atoms is approximately 112 grams, or 0.112 kilograms. What is the energy equivalent of this mass in joules?
Excess reagent definition
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It has been proposed that North America is moving west at about 2 cm per year. How many kilometers would it move in 5,000 years? (Note: 2 cm is a measurement so your final answer should have significant figure rules applied.)

Answers

Answer: 0.1 km

Explanation:

1) Multiply the rate (speed) by the time: 2 cm / year × 5,000 year = 10,000 cm

2) Convert cm to km, using these well know conversion factors:

1 km = 1,000 m

1 m = 100 cm

⇒ 10,000 cm × [1 m / 100 cm] × [1 km / 1,000 m] = 0.1 km
Well it would move 10,000cm so converting that into km would be it would move 0.1km 

The place in the back of your eye that receives images is called the .retina,iris,cornea,pupil

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retina receives the Images . 

Answer:

Its the retina

Explanation:

A solution with a pH of 2.0 has a hydronium ion concentration ten times greater than a solution with a pH of(1) 1.0 (3) 3.0
(2) 0.20 (4) 20.

Answers

Answer:The correct answer is (3).

Explanation:

The pH of the solution is defined as negative logarithm of H^+ or hydronium ions ions in the solution.

pH=-\log[H^+]

2=-\log[H^+]

[H^+]=0.01 M

The pH with 10 times the concentration H^+ ions.

[H^+]=10* [H^+]'

pH=-\log[H^+]'=-\log[(0.01)/(10)]=3

Hence, the correct answer is (3).
The answer is (3) 3.0. The solution with a pH of 2.0 has greater concentration means the other solution has greater pH. pH=-lg[H+]. So we can get the pH of other solution is 3.

What is the process that is responsible for the effect that the salt water has on plants?

Answers

because its like a human taking to much soda in it doesnt like it and starts to damage our livers...so salt water is the same with a plant.....:)

Hey! If someone could help me out I would really appreciate it even if it was just one answer. I'm really stuck on 3. Its second year of chem!

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Answer:

I would go for number 5 . It sounds more logical to me.

Which pair of compounds will form a buffer in aqueous solution?

Answers

Buffer solutions consist of an aqueous solution of a weak acid and its conjugate base or a weak base and its conjugate acid. Buffer solutions are used to have better control of the pH of solutions.

An example of a weak acid and its conjugate base is acetic acid (CH3COOH) and sodium acetate (CH3COONa).
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