2 years ago

Which object has particles with the most kinetic energy?

Chemistry

1 answer:

Pavlova-9 [17]2 years ago

6 0

Answer:

Explanation:

because it is moving so it has kinetic energy

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9.00 atm

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How many joules of energy are absorbed when 36.2 grams of water is evaporated?

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What data should be plotted to show that experimental concentration data fits a first-order reaction? A) 1/[reactant] vs. time B

natita [175]

Answer:

C) In[reactant] vs. time

Explanation:

For a first order reaction the integrated rate law equation is:

$A = A_{0}e^{-kt}$

where A(0) = initial concentration of the reactant

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k = rate constant

Taking ln on both sides gives:

$ln[A] = ln[A]_{0}-kt$

Therefore a plot of ln[A] vs t should give a straight line with a slope = -k

Hence, ln[reactant] vs time should be plotted for a first order reaction.

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2 years ago

Many grams of aluminum are required to produce 3.5 moles Al2O3 in the presence of excess O2?

Aleks [24]

The grams of aluminum that are required to produce 3.5 moles of AlO3 in presence of excess O2 is calculated as below

write the equation for reaction
4 Al + 3O2 =2 Al2O3

by use of mole ratio between Al to Al2O3 which is 4 :2 the moles of Al
=3.5 x4/2 = 7 moles

mass of Al = moles / x molar mass

= 7 moles x27 g/mol =189 grams

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2 years ago