What is the percent by mass of chlorine in NaCi? total mass of element in compound molar mass of compound Use %Element x 100

This is a solution whose solvent is water.

How is the earths magnetic field evidence that convection is occurring?

Which statement is true about elements in a period on the periodic table? They have different properties that repeat across the next period. They have different properties that show no pattern. They have similar names. They have similar properties.

Why did a portion of the tabletop get cold when Natasha placed her cold drink on the table. A. the table's molecules were vibrating more slowly in that area. B. The tables molecules had spread further apart in that area C.

Explain, in terms of electron configuration why atoms of the radioisotope produced by the sixth decay in the U-238 disintegration series do not readily react to form compounds?

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

The sun's inner core is the hottest part of the sun true or false