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docker41 [41]
2 years ago
12

What force must act on a 150 kg mass to give it an acceleration of 30 m/s squared? F=ma

Chemistry
1 answer:
Helga [31]2 years ago
4 0

Answer:

its 120

Explanation:

i did it :)

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What is the molarity of 0.540g Mg N,0. in 250 mL of solution?​
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Answer:

2.16x10^-03

molarity=mass÷volume

0.540÷250

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3 years ago
PLEASE HELP ME!!!! Brainiest to the first person to get it right
Nastasia [14]

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3 years ago
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The radioactive substance cesium-137 has a half-life of 30 years. The amount At (in grams) of a sample of cesium-137 remaining a
stealth61 [152]

<u>Answer:</u> The amount of sample left after 20 years is 288.522 g and after 50 years is 144.26 g

<u>Explanation:</u>

We are given a function that calculates the amount of sample remaining after 't' years, which is:

A_t(t)=458\times (\frac{1}{2})^{\frac{t}{30}

  • <u>For t = 20 years</u>

Putting values in above equation:

A_t(t)=458\times (\frac{1}{2})^{\frac{20}{30}

A_t(t)=288.522g

Hence, the amount of sample left after 20 years is 288.522 g

  • <u>For t = 50 years</u>

Putting values in above equation:

A_t(t)=458\times (\frac{1}{2})^{\frac{50}{30}

A_t(t)=144.26g

Hence, the amount of sample left after 50 years is 144.26 g

6 0
3 years ago
Ammonia is produced by the Haber process. The equation is shown.
choli [55]

Answer:

option D

Explanation:

Increasing the temperature increases the yield of ammonia and speeds up the reaction as chemical reaction is affected by temperature.

7 0
2 years ago
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