True or False

When comparing an empirical formula to a molecular formula the subscripts after each element in both formulas are the same

Which of the following might a biologist choose to study? A. The pigments used in Claude Monet's paint B. Wind patterns on Mars C. The effects of ultraviolet light on red paint D. The causes of honeybee deaths in beehives

For an alloy that consists of 93.1 g copper, 111.7 g zinc, and 4.0 g lead, what are the concentrations of (a) Cu, (b) Zn, and (c) Pb in weight percent? The atomic weights of Cu, Zn, and Pb are 63.54, 65.39, and 207.2 g/mol, respectively.

How many moles of hydrogen atoms are present in 25.0 g of water?

If 0.40 mol of H₂ and 0.15 mol of O₂ were to react as completely as possible to produce H₂O, what mass of reactant would remain?

What is force? Need it to answer my test

The reaction rate between reactants Z and Y is proportional to the cube of [Z]. What is the rate law for this reaction?

A metal surface becomes dull because of continued abrasion. chemical or physical

What types of tissues build the digestive system?

Chemical bonds? A.) Combine compounds to form elements B.) Hold atoms together to form compounds C.) Are always covalent D.) Are always ionic

What is the smalles lt unit of copper that still maintained the characteristics of copper