Which of the following is a property of matter?
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a. it is everywhere.
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b. it cannot be divided.
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c. it takes up space.
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d. it is constantly changing.
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Different isotopes indicate that an element will have different numbers of

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Consider the following multistep reaction: a b→ab(slow) a ab→a2b(fast)−−−−−−−−−−−−−−−−− 2a b→a2b(overall) based on this mechanism, determine the rate law for the overall reaction. express your answer in standard masteringchemistry format. for example, if the rate law is k[a]3[b]2 type k*[a]^3*[b]^2