Which element has 32 protons in its nucleus?

phosphorus

cobalt

germanium

sulfur

Which of these force is reponsible for attracting the opposite poles of two bar magments towards each other

If Kc = 0.450 at 40.°C and Kc = 0.635 at 90.°C, what is ΔH° for the reaction?

Compound Z has a MW of 100. Your lab partner weighed 25 grams of compound Z and dissolved it in water to a final volume of 1 liter. What is the concentration of the solution expressed as molarity?

What is the molarity of a 500-ml solution containing 340 g of KI

Copper is an example of a (n) a. gemstone. b. consumption resource. c. renewable resource. d. nonrenewable resource

In terms of the scientific method, the purpose of an experiment is: form a hypothesis test a hypothesis form a conclusion develop data

Which layer of the earth can only be studied by indirect means

Is Euglena heterotroph or autotroph

What is the mass of 5000. atoms of silicon

Which coefficients balance this equation? _CH4 + _O2 - > _CO2 + _H2O A. 1, 1, 1, 1 B. 1, 1, 2, 1 C. 1, 2, 1, 2 D. 2, 1, 2, 1