Mass defect for the isotope thorium-234 = 1.85864 amu.

How many kilograms does the mass defect represent?

A) 1.85864 * 10-10 kg

B) 1.12 * 10 - 22 kg

C) 3.09 * 10-27 kg

D) 1.66 x 10-27 kg

A solution is made by mixing 0.05 ml of 1.0 m hcl with 999.95 ml of pure water. calculate the ph of the resulting solution (assume the total volume is 1.0 l).

Question 1 unsaved an atom of an element with atomic number 48 and mass number 120 contains question 1 options: 72 protons, 72 electrons, and 48 neutrons. 72 protons, 48 electrons, and 48 neutrons. 120 protons, 48 electrons, and 72 neutrons.

1. How did Dmitri Mendeleev deal with elements that had not yet been discovered? A. He left blanks for them in his periodic table, as he predicted they would be discovered. B. He gave them names and properties and placed them in the table. C.

What form the ideal gas law would you use to calculate the temperature of a gas

Gina's group classified their mineral samples based on relative hardness. They considered the minerals that have a hardness of less than five as relatively soft, and those with a hardness of five or above as relatively hard.

Which of these is an acid A (Vinegar

How are RNA and DNA used to make proteins? A-RNA has coded instructions for making proteins, and DNA translates the code. B-DNA forms the monomers that make up RNA, and RNA forms the monomers that make up proteins.

The organic compound aldehyde contains which functional group? amide carbonyl carboxyl hydroxyl

Which astronomer supported the belief that earth was at the center of the universe while all other planets and celestial objects orbited around it

When a solution of LiC2H3O2 reacts with a solution of MgSO4, what is the net ionic equation? No reaction Mg+2 (aq) + C2H3O2 - (aq) → Mg (C2H3O2) 2 (s) Mg+2 (aq) + 2C2H3O2 - (aq) → Mg (C2H3O2) 2 (s) 2Li + (aq) + SO4-2 (aq) → Li2SO4 (s)