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Alborosie
3 years ago
15

Which occurs whenever valence electrons are shared or transferred between atoms

Chemistry
1 answer:
Andrews [41]3 years ago
7 0
D is my answer. hope this helps.

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The rate constant of a reaction is measured at different temperatures. A plot of the natural log of the rate constant as a funct
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Answer:

The activation energy is 7.11 × 10⁴ J/mol.

Explanation:

Let's consider the Arrhenius equation.

lnk=lnA-\frac{Ea}{R} .\frac{1}{T}

where,

k is the rate constant

A is a collision factor

Ea is the activation energy

R is the ideal gas constant

T is the absolute temperature

The plot of ln k vs 1/T is a straight line with lnA as intercept and -Ea/R as slope. Then,

\frac{-Ea}{R} =-8.55 \times 10^{3} K^{-1} \\Ea= 8.55 \times 10^{3} K^{-1} \times 8.314 \frac{J}{K.mol} =7.11 \times 10^{4} J/mol

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3 years ago
Which statement supports Newton’s first law of motion?
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C. Planets can move at a varying speed due to forces exerted in space.
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What is the momentum of a 50-kilogram ice skater gliding across the ice at a speed of 5 m/s
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Momentum is a term used to quantify the motion of an object has. It is calculated as the the product of the object's mass and the velocity. It is expressed as:
Momentum = m x vMomentum = 50 kg x 5 m/sMomentum = 250 kg m/s
Therefore, the correct answer is the last option.
 
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Which of these is an indication that a chemical reaction has occurred?
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Formation Of A Gas.

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