You can scratch graphite with your fingernail. What does this tell you about graphite? A. It breaks easily. B. It’s not very hard. C. It’s not very lustrous. D. It doesn’t have much texture.

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products