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A material that increases the rate of a chemical reaction by lowering the activation energy is called a(n)
activation energy.
replacement reaction.
7
catalyst.
formation of a new substance
a homogeneous mixture.
18 grams
coefficients.
The minimum amount of energy required to start a chemical reaction is the
activation energy.
replacement reaction.
7
catalyst.
formation of a new substance
a homogeneous mixture.
18 grams
coefficients.
The scientist found that 2 grams of hydrogen reacted completely with 16 grams of oxygen. What was the total mass of water produced?
activation energy.
replacement reaction.
7
catalyst.
formation of a new substance
a homogeneous mixture.
18 grams
coefficients.
You can balance a chemical equation by changing the
activation energy.
replacement reaction.
7
catalyst.
formation of a new substance
a homogeneous mixture.
18 grams
coefficients.
In the formula H2SO4, how many atoms are there?
activation energy.
replacement reaction.
7
catalyst.
formation of a new substance
a homogeneous mixture.
18 grams
coefficients.
Which of the following is the best evidence for a chemical reaction?
activation energy.
replacement reaction.
7
catalyst.
formation of a new substance
a homogeneous mixture.
18 grams
coefficients.
A reaction in which one element is substituted for another in a compound is called a(n)
activation energy.
replacement reaction.
7
catalyst.
formation of a new substance
a homogeneous mixture.
18 grams
coefficients.
Salt water is an example of
activation energy.
replacement reaction.
7
catalyst.
formation of a new substance
a homogeneous mixture.
18 grams
coefficients.
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