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2 years ago

11

HELPPP MEEE ASAPP!!!

1 answer:

SVEN [57.7K]2 years ago

4 0

Answer:

the answer is B 200%

Explanation:

cause its the second column

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How many protons are in the nucleus of an atom with an atomic number of 15

kykrilka [37]

Answer:

15 protons

Explanation:

The atomic number always equals the number of protons inside the nucleus, so if the atomic number is 15, that means 15 protons are present.

4 0

2 years ago

A gas is allowed to expand from a volume of 400 ml to 2000 ml at a constant temperature. If the the initial pressure is 3 atm, c

Lostsunrise [7]

Answer:

$P_{2}) = 0.6 \; atm$

Explanation:

<u>Given the following data;</u>

Initial volume = 400 mL

Final volume = 2000 mL

Initial pressure = 3 atm

To find the final pressure P2, we would use Boyles' law.

Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.

Mathematically, Boyles law is given by;

$PV = K$

$P_{1}V_{1} = P_{2}V_{2}$

Substituting into the equation, we have;

$3 * 400 = P_{2}* 2000$

$1200 = 2000P_{2}$

$P_{2}) = \frac {1200}{2000}$

$P_{2}) = 0.6 \; atm$

8 0

3 years ago

FREE BRAINLIEST (TO THE FIRST PERSON THAT ANSWERS) AND 20 POINTS

Art [367]

Answer:

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Explanation:

6 0

3 years ago

Read 2 more answers

State mendel's law of inheritance

inna [77]

Answer:

bat hindi nalang ikaw mag sagot dyan bubu ka ba huh well search mo nalang sa g00gle yan teh baka sakali lang like duh haha gawin mo nalang yan

that's it!

6 0

3 years ago

What happens to the motion of molecules in a substance is cooled?

Mazyrski [523]

The motion becomes smaller. Lets tale the example of water. At gaseous state, the particles moves rapidly in all directions. As it is cooled, it becomes liquid and the motion becomes smaller because the particles are now closer to each other as the attraction forces becomes stronger. As it is cooled further, it becomes solid. At solid state, the particles now vibrate in fixed position. Apply this concept to motion of molecules in a substance.

7 0

2 years ago