Atoms of which two elements in the ground state contain the same number of valence electrons

A - al & si

B - al & b

C - al & zn

D - al & ge

Which metal will spontaneously react with Zn2 + (aq), but will not spontaneously react with Mg2 + (aq) ? (1) Mn (s) (2) Cu (s) (3) Ni (s) (4) Ba (s)

The planets are divided into two groups name them

When balancing the oxidation and reduction half-reactions for acidic solutions, you should: use H + and OH - equally in order to balance the equation use H + only in order to balance the equation use H + and H2O, as needed to balance the equation

Is water compressible?

A balloon has a volume of 1.75L at a temperature of 25 °C. what will be the volume of the balloon if you take it out into the winter cold air at - 15°C?

Is pure orange juice a solution or a suspension

If a catalyst is used in a reaction: a. the energy of activation increases. b. the reaction rate does not change. c. the reaction rate increases. d. the equilibrium shifts.

Methanol (CH3OH) is produced commercially by the catalyzed reaction of carbon monoxide and hydrogen: CO (g) + 2H2 (g) ⇌CH3OH (g). An equilibrium mixture in a 1.50 L vessel is found to contain 0.0679 mol CH3OH, 0.160 mol CO, and 0.302 mol H2 at 500 K.

Explain why an object when thrown in the air or slid across the ground doesn't travel forever

The length of time required for half of the radioactive atoms in a sample to decay is its a. half-life. b. relative date. c. radioactive date. d. period