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Thepotemich [5.8K]
3 years ago
12

Two crates, one heavy and one light, are at rest on a waxed floor. Which crate will need the greater force to give the same chan

ge in speed? Explain.
Chemistry
2 answers:
otez555 [7]3 years ago
4 0
The heavy one because mass times force is equal to speed. The lighter one has less mass to it goes faster without as much effort. I hope that helps!
Setler [38]3 years ago
4 0

Explanation:

Force is defined as the multiplication of mass and acceleration.

Mathematically,        F = m × a

where              m = mass

                        a = acceleration

This relation clearly indicates that force is directly proportional to mass. That is more is the mass of an object more will be the force required to move the object from its initial position.

Hence, we can conclude that heavy crate will need greater force to give the same change in speed.


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A gas evolved during the fermentation of alcohol had a volume of 19.4 L at 17 °C and 746 mmHg. How many moles of gas were collec
AlexFokin [52]

Answer:- 0.800 moles of the gas were collected.

Solution:- Volume, temperature and pressure is given for the gas and asks to calculate the moles of the gas.

It is an ideal gas law based problem. Ideal gas law equation is used to solve this. The equation is:

PV=nRT

Since it asks to calculate the moles that is n, so let's rearrange this for n:

n=\frac{PV}{RT}

V = 19.4 L

T = 17 + 273 = 290 K

P = 746 mmHg

we need to convert the pressure from mmHg to atm and for this we divide by 760 since, 1 atm = 760 mmHg

P=746mmHg(\frac{1atm}{760mmHg})

P = 0.982 atm

R = 0.0821\frac{atm.L}{mol.K}

Let's plug in the values in the equation to get the moles.

n=\frac{0.982atm*19.4L}{0.0821\frac{atm.L}{mol.K}*290K}

n = 0.800 moles

So, 0.800 moles of the gas were collected.

4 0
3 years ago
Help me please omg I don’t know
Anna35 [415]

Answer:

5 1 2 4and 3 this is correct way

8 0
2 years ago
open the phase diagram for co2 given in the introduction again. use the phase diagram for co2 in the interactive activity and de
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The phase diagram of CO2 has a melting curve that slopes up and to the right, in contrast to the phase diagram of water, which has a more conventional shape. It is impossible for liquid CO2 to exist at pressures lower than 5.11 atm because the triple point is 5.11 atm and 56.6 °C.

Due to the fact that ice is less thick than liquid water, the phase diagram of water has an odd melting point that drops with pressure. Carbon dioxide cannot exist as a liquid at atmospheric pressure, according to the phase diagram of the gas. Thus, gaseous carbon dioxide directly sublimes from solid carbon dioxide.

Learn more about solid carbon dioxide.

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1 year ago
How many particles are there in 1 mole of hand sanitizer?.
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Answer: 6.02214 × 1023 particles

Explanation: did math

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Help with this question for chemistry!!
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Emperic formula is SO subscript 2. Molecular formula would be SO subscript 2 multiply 1 so it's the same answer.
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3 years ago
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