Examine the following equations.

A. 23490Th→23491Pa+0-1e+γ

B. 60∗27Co→6027Co+γ

C. 23490Th→23088Ra+42He

D. 146C→147N+0-1e

Which equation or equations represent gamma decay?

A and D

D

C

C and D

A

A and B

B

Which metal ion produces the light with the highest energy level

Is lithium a metal metalloid or non metal

Pepsin is an enzyme involved in the process of digestion. Its molar mass is about 3.50 * 104 g/mol. What is the osmotic pressure in mm Hg at 30°C of a 0.500-g sample of pepsin in 60.0 mL of an aqueous solution?

How many moles of Na3PO4 are in 820. grams of it? a. 3 b. 4 c. 5 d. 6 e. 8

How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen? 1) 1 mol of oxygen has fewer molecules. 2) 1 mol of oxygen has more molecules. 3) Each sample has the same number of molecules.

What is competition a cause of? a. natural competition b. natural symbioses c. natural capacity d. natural selection

A sample of three mixed gases is at 632.0 mmhg. if the partial pressure of co2 is 124.3 mmhg and the partial pressure of n2 is 461.9 mmhg, what is the partial pressure of o2?

How do the products and reactants of a chemical change compare? The mass of the products is greater than the mass of the reactants because energy is taken in by the reaction.

All the following are characteristic properties of phosphorus. Which one is a chemical property? (a) When exposed to air, white phos - phorus will burn spontaneously, but red phosphorus will not. (b) Red phosphorus and white phos - phorus are solids.

What are the monomers of proteins called