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geniusboy [140]
3 years ago
11

The rate at which an object moves over a given amount of time is....

Chemistry
2 answers:
marin [14]3 years ago
4 0

Answer:

A. Speed

The distance the object moves per unit of time is speed.

irakobra [83]3 years ago
3 0
Speed.
-Acceleration is how fast an object increases in speed.
-Velocity is how fast something is moving in a certain direction
-Speed is how fast something is moving
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Answer:i dont know

Explanation:

I D

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8 0
2 years ago
You try to measure out exactly 5.0 milliliters of water by eye into each of five test tubes. When you go back to check the volum
jeka94

Answer:

The volumes are both, accurate and precise.

Explanation:

In the measurement of a set, precision refers to how much coincidence exists in the measurements of an specific value, as the measurements are close, we can say the volumes are precise.

Accuracy means the agreement that exists between the average of one

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Media is 4,96 ml and I wanted to measure 5 ml. It is also close.

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3 years ago
What mass of water could be warmed from 21.4 degrees celsius to 43.4 degrees celsius by the pellet dropped inside it? Heat capac
Artist 52 [7]

42.34 g of water could be warmed from 21.4°C to 43.4°C  by the pellet dropped inside it

Heat loss by the pellet is equal to the Heat gained by the water.

q_{w} = -q_{p} ….(1)

where, q_{w} is the heat gained by water

q_{p} is the heat loss by pellet

q_{w} = mCΔT

where m = mass of water

C = specific heat capacity of water = 4.184 J/g-°C

ΔT = Increase in temperature

ΔT for water = 43.4 - 21.4 = 22°C

q_{w} = m × 4.184 × 22 …. (2)

Now

q_{p} = H_{c} ×ΔT

where H_{c} = Heat capacity of pellet = 56J/°C

Δ T for pellet = 43.4 - 113 =- 69.6°C

q_{p} = 56 × -69.6 = -3897.6 J

From equation (1) and (2)

-m× 4.184 × 22 =-3897.6

m= 42.34 g

Hence, 42.34 g of water could be warmed from 21.4 degrees Celsius to 43.4 degrees Celsius by the pellet dropped inside it.

Learn more about specific heat here brainly.com/question/16559442

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6 0
2 years ago
Which of the following is NOT a way carbon dioxide returns to the atmosphere?
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Answer:

emissions by factories is the answer

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Factories produce air pollution which is polluted air, the other options

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Hope this helped! Have a nice day, be safe and healthy :)

4 0
3 years ago
PbCl2s) + Cl2g -<br> + PbCl40)<br> ΔΗ = ?
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Answer:

ichedgepeth

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beginner because it's tough than other things

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