at a pressure 44 kpa the gas in a cylinder has a volume of 29 liters assuming temperature remains the same,if the volume of the gas is decreased to 4liters what is the new pressure?kpa

Answers

Answer 1

Answer: Assuming the gas is ideal, the ideal gas law can be used. To make things simpler, Boyle's law can also be used because it denotes the inverse relationship between pressure and volume at constant temperature. The solution to be used is as follows

P1V1 = P2V2
(44)(29) = P2(4)
P2 = 319 KPa

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Answers

Answer: alpha decay and beta decay cause the parent nucleus to become a different element.

Explanation:

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Our topic at school is light- What is dispersion, diffusion, refraction and reflection?

Answers

Dispersion-Distributing something over an area.Diffusion-the scattering of light by reflection from a rough surface.
Refraction-Turning or bending of any wave.
Reflection- Image.

What term describes the rate at which charge passes a point in a circuit

Answers

Current - APEX :) lol it said my answer wasn't long enough so yeah Hi

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A stone is dropped from a cliff. What will be its speed when it was fallen 100 m?

Answers

Answer:

final velocity will be44.72m/s

Explanation:

HEIGHT=h=100m

vi=0m/s

vf=?

g=10m/s²

by using third equation of motion for bodies under gravity

2gh=(vf)²-(vi)²

evaluating the formula

2(10m/s²)(100m)=vf²-(0m/s)²

2000m²/s²=vf²

√2000m²/s²=√vf²

44.72m/s=vf

Answer:

44.2m/s

Explanation:

2gs = vf*2 - vi*2

2 x 9.8 x 100 = vf*2 - 0

1960 = vf*2

vf = 44.2 m/s

What is a hypothesis

Answers

A hypothesis can be described as an intelligent guess

Sodium hydroxide (NaOH) was added to pure water (H2O). Which most likely were the pH values of the water before and after the sodium hydroxide was added to it?A. before = 7, after = 9
B. before = 7, after = 4
C. before = 4, after = 7
D. before = 9, after = 7

Answers

Before 7 after 9. A pH smaller than 7 indicates acidity with 0 being completely acidic. A pH greater than 7 shows alkalinity with 14 being completely alkaline. 7 is neutral. Since NaOH is alkaline, adding it to a neutral substance would increase the pH and it would increase from 7 to 9.

Answer:

A before = 7, after = 9

Explanation:

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