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Vitek1552 [10]
2 years ago
9

Which element listed below is a nonmetal?

Chemistry
2 answers:
valina [46]2 years ago
8 0

The awnser is chlorine (Cl) trust me

alukav5142 [94]2 years ago
3 0

Answer:

D: Chlorine( I may be wrong my chemistry year was a nightmare)

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Which of the following gases would have the greatest kinetic energy at 300 K?
tekilochka [14]

Answer:

D. All of them would have the same kinetic energy

Explanation:

The expression for the kinetic energy of the gas is:-

K.E.=\frac{3}{2}\times K\times T

k is Boltzmann's constant = 1.38\times 10^{-23}\ J/K

T is the temperature

<u>Since, kinetic energy depends only on the temperature. Thus, at same temperature, at 300 K, all the gases which are N_2,\ NH_3\ and\ Ar will posses same value of kinetic energy.</u>

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2 years ago
What is the kinetic energy of a 478 kg object that is moving with a speed of 15m/s
AVprozaik [17]

Answer:Kinetic energy = (1/2)*mass*velocity^2

KE = (1/2)mv^2

KE = (1/2)(478)(15)^2

KE = 53775J

Explanation:

Kinetic energy = (1/2)*mass*velocity^2

KE = (1/2)mv^2

KE = (1/2)(478)(15)^2

KE = 53775J

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2 years ago
250 mL of water is collected during a combustion reaction. The temperature in the
klio [65]

Answer:

10.67 moles is the answers.hope it helped

7 0
3 years ago
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blondinia [14]
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7 0
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A sample of gas occupies 1.2 L at 12.0oC. Assuming pressure remains the same, what would be the volume (in L) of this gas at 67o
liraira [26]
V1/T1 = V2/T2
V1 = 1.2 L
T1 = 12.0 + 273 = 285 K
T2 = 67.0 +273 = 340 K

1.2/285 = V2 / 340
V2 = 1.4 L
3 0
3 years ago
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