What was used in the first voltaic cell to allow for ion flow between the solutions of CuSO4 and ZnSO4?

A. a porous barrier

B. a non-porous barrier

C. a platinum bridge

D. a salt bridge

Which of the following statements about nuclear energy is true? A) Nuclear energy cannot be contained nor controlled. B) Nuclear energy is contained in nuclear bonds. C) Nuclear energy is less efficient than other energy forms.

How many grams of nitrogen are in 125g of NH3

How many copper atoms are in 70 grams of copper

Which of the following resources in natural, biotic, and exhaustible? A. Silk b. Forests c. Minerals b. water

How do you know a chemical reaction has taken place?

Why does the amount of energy available change as you move from one trophic level to the next?

What type of bond holds metal atoms together?

Imagine you are purifying a protein which accounts for 0.001% of the total protein within a cell. how many steps of purification are required to yield pure protein, assuming a 10 fold purification with each step of purification?

If an object has the mass of 109.67 g and a volume of 16.99 cm3 what's its density

Astrology is pseudoscience. What can you conclude about the claims made by astrology