How should a stopper be handled after is has been removed from a reagent bottle?

You have a mixture that contains 0.380 moles of Ne (g), 0.250 moles of He (g), and 0.500 moles CH4 (g) at 400 K and 7.25 atm. What is the partial pressure of He? 1. 1.60 atm 2. 3.21 atm 3. 3.63 atm 4. 2.44 atm

An object becomes positively charged when it a. loses electrons. b. loses protons. c. gains electrons. d. gains neutrons.

For the reaction: MgF2 (s) ⇌ Mg2 + (aq) + 2F - (aq), Ksp = 6.4 * 10-9, the addition of 0.10 M NaF to the solution cause what effect on the solubility equilibrium? View Available Hint (s) For the reaction: MgF2 (s) ⇌ Mg2 + (aq) + 2F - (aq), Ksp = 6.

What is a monomer of nucleic acids called?

Iodine has 53 protons and 74 neutrons: what is the atomic number? What is the atomic mass?

Arrange the elements in order of increasing atomic radius Mg Ba F S

Based on the enthalpy changes given for the reactions, which reactions are endothermic? (check all that apply) 2H2O → 2H2 + O2, ΔH = 484 kJ C + O2 → CO2, ΔH = - 394 kJ H2 + Br2 → 2HBr, ΔH = - 73 kJ 2NH3 → N2 + 3H2, ΔH = 92 kJ

Which of the following is not true about performing biological investigations reading and understanding Metric system

At 29°C, Kp = 5.3 ✕ 102 atm-2 for the following reaction. N2 (g) + 3 H2 (g) equilibrium reaction arrow 2 NH3 (g) When a certain partial pressure of NH3 (g) is put into an otherwise empty rigid vessel at 29°C, equilibrium is reached when 55.

If ice is heated at constant pressure of 0.0512 ATM will it