Uranium-234 decays to lead-214 through a series of alpha decays. Which of the following is the total number of alpha particles emitted in this decay series?

A. 1

B. 2

C. 5

D. 10

The Venn diagram compares protons with neutrons. Which shared property belongs in the region marked "B"? Is negatively charged Has mass of 1 amu Orbits the nucleus Is positively charged

5.2 G of HCl are dissolved in 25 mL of solution. What is the molarity? A) 0.21 M B) 210 M C) 0.0057 M D) 5.7 M

During translation, the new polypeptides are often directed to specific parts of the cell by the presence or absence of short sequences of amino acids called signal sequences.

Exactly 1/16 of a given amount of protactinium-234 remains after 26.76 hours. What is the half life of protactinium-234?

What is the balanced chemical equation for the reaction of sodium and oxygen

If the molar mass of NaCl is 58.44 g/mol, what amount of NaCl (in mol) is contained in 250.0 mg of NaCl?

Which has more surface area, a rock the size of your hand or a handful of small rocks?

4Al (s) + 3O2 (g) - >2Al2O3 (s) the reaction is started by mixing 10.0g of Al and 10.0g of O2. What is the limiting reaction and how much Al2O3 is produced?

F 3.84 moles of methane are consumed in this reaction, how many moles of HCN will be produced?

Two metals with equal mass and different heat capacities are subject to the same amount of heat; which undergoes the smallest change? a) The metal with the higher heat capacity. b) The metal with the lower heat capacity.