Which of these is a pure substance

A. Diamond.

B. Salt

C. Ocean Water

(choices come after)

A

A and B

B and C

All of them

Find the pH of a 0.310 M aqueous benzoic acid solution. For benzoic acid, Ka=6.5⋅10-5.

Which of the following is not a way that nonnative organisms are introduced to new aquatic ecosystems related to commerce? A. cargo ship hulls B. recreational boats C. escape from aquariums D. migration

Which famous scientist unknowingly founded the field of spectroscopy? A. Albert Einstein B. Isaac newton C. Galilieo D. George hale (If anyone has the unit 6 lesson 9 unit test for science id like the answers)

How many grams of iron metal do you expect to be produced when 245 grams of an 80.5 percent by mass iron (II) nitrate solution react with excess aluminum metal? Show all of the work needed to solve this problem.

Calculate the mass percent of carbon in the hydrated form of the solid that has the formula BeC2O4•3H2O.

What 3 factors affect precipitation of a region

49. (3pts) A student calculated the volume of a 2.71 mol sample of helium at 450 torr and 35 °C. The student solved the problem using the ideal gas law as shown below: (450 torr) (V) = (2.71mol) (0.

The kilogram is the standard unit of

Why is useful to use moles to measure chemical quantities

In photosynthesis what form of energy is sunlight converted to