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strojnjashka [21]
3 years ago
5

Which of the following statements is true??

Chemistry
1 answer:
iren [92.7K]3 years ago
8 0
Tsunamis are caused by seismic waves
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If you have two pistons in a system, which exerts the larger force?
Alik [6]

Answer:

The larger piston

Explanation:

(i just took the same test)

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2 years ago
What is water (H2O)? Select all that apply * an element a molecule 1 hydrogen and 2 oxygen 2 hydrogen and 1 oxygen
Novay_Z [31]

Answer:

2 hydrogen and 1 oxygen

Explanation:

H2O

Hydrogen has the coefficient so you multiply 1 by 2 and it equals 2

Oxygen does not have any sub or coe so its automatically 1

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3 years ago
Which of the following statements about biodiversity is true? a. Changes to biodiversity always positively affect an ecosystem.
erma4kov [3.2K]

Answer:

I believe C

Explanation:

Saying it always does one thing or another is mostly not the case. When it comes to biodiversity, there can be positive impacts! But an ecosystem is affected by everything in it's biodiversity.

4 0
2 years ago
A typical refrigerator is kept at 4˚C, and a soda can has a pressure of
ss7ja [257]

Answer: The new pressure will be 1.42 atm

Explanation:

To calculate the final pressure of the system, we use the equation given by Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{P_1}{T_1}=\frac{P_2}{T_2}

where,

P_1\text{ and }T_1 are the initial pressure and temperature of the gas.

P_2\text{ and }T_2 are the final pressure and temperature of the gas.

We are given:

P_1=1.18atm\\T_1=4^0C=(4+273)K=277K\\P_2=?\\T_2=60^0C=(60+273)K=333K

Putting values in above equation, we get:

\frac{1.18}{277}=\frac{P_2}{333}\\\\P_2=1.42

Hence, the new pressure will be 1.42 atm

7 0
3 years ago
The pH of a substance can only be determined when it is
NeTakaya
The pH of a substance can only be determined when it is
a) dried in a powder
b) frozen
c) dissolved in water
d) heated



It’s frozen
B
8 0
3 years ago
Read 2 more answers
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