3 years ago

Consider the chemical reaction involving graphite as the reactant:

Physics

1 answer:

ziro4ka [17]3 years ago

8 0

Answer:

D may likely be your answer

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2. Why was it important to examine both the color and the streak of your minerals? Think about streak and explain why it’s calle

horrorfan [7]

<span>Some minerals might have similar color, but different streaks. Others might have the same streak color, but different colors</span>

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3 years ago

Two bodies made of the same material have same external dimension and appearance, but one is compact solid and other is hollow.

Bumek [7]

Answer:

Different

Explanation:

The hollow one will expand even more making it have a larger volume then the solid one so they are different

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3 years ago

Two kilograms of air is contained in a rigid wellinsulated tank with a volume of 0.6 m3 . The tank is fitted with a paddle wheel

wolverine [178]

Answer:

$0.3\ \text{m}^3/\text{kg}$

$36\ \text{kJ}$

$18\ \text{kJ/kg}$

Explanation:

V = Volume of air = $0.6\ \text{m}^3$

P = Power = 10 W

t = Time = 1 hour

m = Mass of air = 2 kg

Specific volume is given by

$v=\dfrac{V}{m}\\\Rightarrow v=\dfrac{0.6}{2}\\\Rightarrow v=0.3\ \text{m}^3/\text{kg}$

The specific volume at the final state is $0.3\ \text{m}^3/\text{kg}$

Work done is given by

$W=Pt\\\Rightarrow W=10\times 60\times 60\\\Rightarrow W=36000\ \text{J}=36\ \text{kJ}$

The energy transfer by work, is $36\ \text{kJ}$

Change in specific internal energy is given by

$\Delta u=\dfrac{Q}{m}+\dfrac{W}{m}\\\Rightarrow \Delta u=0+\dfrac{36}{2}\\\Rightarrow \Delta u=18\ \text{kJ/kg}$

The change in specific internal energy of the air is $18\ \text{kJ/kg}$

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3 years ago

50 points According to kinetic theory, in a closed system, what happens when two atoms collide?

vfiekz [6]

I believe its the 1st option

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4 years ago

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Weather patterns on earth may be......

OLga [1]

Cold weather as in snow, and sleet. Hethared weather as in warm sun acting as a proper radiant agains the surface of biofuse, and standard quadrullants as in rain.

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3 years ago