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lapo4ka [179]
2 years ago
5

Calculate how many moles of element Q are in 23.53 g of element Q.

Chemistry
1 answer:
pogonyaev2 years ago
7 0

Answer:

0.579 moles

Explanation:

Moles = 23.53/40.64

= 0.5789 moles

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How many moles of ammonia are there in a 346 g sample of pure nh3?
Citrus2011 [14]
Molar mass NH3 = 17.031 g/mol

1 mole NH3 -------------- 17.031 g
?? moles NH3 ---------- 346 g

346 x 1 / 17.031

=> 20.31 moles of NH3

6 0
3 years ago
Which statement best describes the collisions of gas particles according to the kinetic-molecular theory?​
allochka39001 [22]

B. As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with no gain or loss of energy.

Explanation:

The best statement that describes the collision of gas particles according to the kinetic-molecular theory is that as particles travel in straight lines, their paths sometimes meet and then they bounce apart with no gain or loss of energy.

  • The kinetic molecular theory is used to explain the forces between molecules and their energy.

One of the postulate suggests that, when molecules collide with each other, or with the wall of the container, there is no loss or gain of energy.

  • Molecules are independent of one another and that forces of attraction and repulsion between molecules are negligible.

Learn more:

Particle collision brainly.com/question/6439920

#learnwithBrainly

4 0
3 years ago
A force of 2,500 pounds drags a truck 30 feet in 1/2 minute.
scoray [572]
The right subject for this question is physics.

To calculate the work you use the formula:

Work = force * displacement

Work = 2500 pounds * 30 feet = 75,000 pounds - feet



To calculate the power you use the formula:

power = work / time

Power = 75,000 pound - feet / 30 seconds = 2300 pound-feet / second.
3 0
3 years ago
Im the only noble gas with 2 electrons
iris [78.8K]

Answer:

Helium

Explanation:

8 0
3 years ago
Read 2 more answers
If an object has a mass of 20 kg, what is the force of gravity acting on it on earth? A. 196 N B. 32.67 N End of exam C. 1.96 kg
garri49 [273]
Force = mass x gravity

Force = 20 kg x 9.8 m/s²

Force = 196 Newtons

Answer A

hope this helps!

7 0
3 years ago
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