What did wegener call this giant land mass?

Which represents a balanced nuclear equation? Superscript 23 subscript 11 upper N a right arrow superscript 24 subscript 12 upper M g plus superscript 1 subscript 1 upper H.

A 58.0mL sample of a 0.122M potassium sulfate solution is mixed with 40.0mL of a 0.102M Lead (II) acetate solution and this precipitation reaction occurs: K2SO4 (aq) + Pb (C2H3O2) 2 (aq) →2KC2H3O2 (aq) + PbSO4 (s) The solid, PbSO4, is collected,

Suppose the mass spectrum of a hypothetical monatomic element X contains a signal at mass number 13 and another of identical height at mass number 15. A. Sketch the mass spectrum. Make sure each axis is properly labeled. B.

Cole is working with radioactive particles and has set up a shield made of aluminum for protection. Which of the following will he be protected from? A.) Only alpha particles and beta particles B.) Only alpha particles C.

For the reaction 2 NH 3 (g) - ⇀ ↽ - 3 H 2 (g) + N 2 (g) 2NH3 (g) ↽--⇀ 3H2 (g) + N2 (g) the equilibrium concentrations were found to be [ NH 3 ] = 0.250 M [NH3]=0.250 M, [ H 2 ] = 0.700 M [H2]=0.700 M, and [ N 2 ] = 0.800 M [N2]=0.800 M.

Label the molecular shape around each of the central atoms in the amino acid glycine. hint

Which has more atoms, 2moles of carbon or 2 moles of aluminum

At 100 degrees c, water reacts with acetic anhydride to make acetic acid. also, at 100 degrees c, water reacts with acetylsalicylic acid and reverts it to salicylic acid and acetic acid.

What is the valence electron configuration of the group 2a elements?

Which of the following statements about monosaccharide structure is true? A) Aldoses and ketoses differ in the position of their hydroxyl groups. B) Monosaccharides can be classified according to the spatial arrangement of their atoms.