How many elements typically join together to form compounds

Which of these time measurements is the smallest? 0.02 seconds 0.02 teraseconds 2,500 milliseconds 25,000 nanoseconds

What causes the distinctive swirling shape of a hurricane?

Can an isotope also be an ion?

Why was ethanol used during the final washes of the recovered copper product?

Which of the following aqueous solutions has the highest [OH - ]? A. A solution with a pH of 3.0 B. 1 * 10-4 M solution of HNO3 C. A solution with a pOH of 12.0 D. Pure water E. 1 * 10-3 M solution of NH4Cl

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