An atom of selenium (Se) forms a monatomic ion.

Which ion does it most likely form?

A. Se 2+

B. Se 2 - <- - I believe this is correct.

C. Se 6+

D. Se 6-

At a given temperature, 4.92 atm of Cl2 and 4.65 atm of Br2 are mixed and allowed to come to equilibrium. The equilibrium pressure of BrCl is found to be 1.597 atm. Calculate Kp for the reaction at this temperature. Cl2 (g) + Br2 (g) 2 BrCl (g).

If 3.6 g of nitrogen is reacted with 2.6 g of hydrogen gas, is it possible to form 6.2 g of ammonia (NH3) gas?

Which solution is a buffer? which solution is a buffer? a solution that is 0.100 m in hno3 and 0.100 m in nano3 a solution that is 0.100 m in hno2 and 0.100 m in nano2 a solution that is 0.100 m in hno2 and 0.100 m in hcl a solution that is 0.

Why is the adhesive property of the pvc plastic important? 1 pt?

How many moles of atoms 7.98x 10^24 C2H2 25.8 grams of Co

Rank the temperatures from the highest to the lowest. 133F 351K 25C 273K 146C 58F 95F

Calculate the density of sulfuric acid if 35.4 mL of the acid weighs 65.14 g.

Where the single machos?

A reaction will be spontaneous only at low temperatures if both ΔH and ΔS are negative. For a reaction in which ΔH = - 320.1 kJ/mol and ΔS = - 86.00 J/K · mol. Determine the temperature (in °C) below which the reaction is spontaneous.

Is it possible for a balloon with an initial internal pressure equal to 250.0 kPa to naturally expand to four times its initial volume when the temperature remains constant and the atmospheric pressure is 101.3 kPa?