Mineral Z scratches talc (hardness: 1), but is scratched by gypsum (hardness: 2). What is the hardness of mineral Z? 1. Greater than 2

2. Less than 1

3. Somewhere between 1 and 2

4. None of the above

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

explanation:

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enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

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