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Monica [59]
3 years ago
13

Which of the following is separated by physical mean.?

Chemistry
2 answers:
Paha777 [63]3 years ago
6 0

Answer:

D, Mixture

Explanation:

Mixtures can be separated physically because that's just how the world works

lubasha [3.4K]3 years ago
3 0

Answer:

D. mixture.

For example  a solid and a liquid may be separated by filtration.

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Answer:

A: object 1

B: object 2

C: object 1

D: object 1

Explanation:

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3 years ago
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How to determine reaction order in reactant?
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In order to determine, Order of reaction, we have to add all the exponents written in the Chemical form, on the Reactant species.

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In the image above, the girl is using her arm to lift a weight. Her arm is acting as a _______.
Vinvika [58]
B the girls arm will act as a pulley
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3 years ago
A 0.5 kg ball rolls down a frictionless inclined plane. The height of the inclined plane is 0.5m. What is the kinetic energy of
joja [24]

Answer:

2.45Joules

Explanation:

since kinetic energy is K.E.=1/2mv^{2}

lost in potential energy is gain of kinetic energy

mgh=1/2mv^2

9.8*2*0.5=v^2

v^{2}=9.8

v=\sqrt{9.8} =3.13m/s

now k.e. = 0.5*m*v^{2} =0.5*0.5*9.8 =2.45J

8 0
3 years ago
A sample of gas occupies 40.0 mL at -123°C. What volume does the sample occupy at 27°C if the pressure is held constant? V1T2 =
Brums [2.3K]

Answer:

80mL

Explanation:

Step 1:

Data obtained from the question.

Initial Volume (V1) = 40mL

Initial temperature (T1) = –123°C

Final temperature (T2) = 27°C

Final volume (V2) =..?

Step 2:

Conversion of celsius temperature to Kelvin temperature.

T(K) = T(°C) + 273

Initial temperature (T1) = –123°C =

–123°C + 273 = 150K

Final temperature (T2) = 27°C = 27°C + 273 = 300K

Step 3:

Determination of the final volume.

This can be obtained as follow:

V1/T1 = V2/T2

Initial Volume (V1) = 40mL

Initial temperature (T1) = 150K

Final temperature (T2) = 300

Final volume (V2) =..?

V1/T1 = V2 /T2

40/150 = V2 /300

Cross multiply

150 x V2 = 40 x 300

Divide both side by 150

V2 = (40 x 300) /150

V2 = 80mL

Therefore, the new volume of the gas is 80mL

6 0
3 years ago
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