A solid substance was tested in the laboratory.

The test results are listed below.

• dissolves in water

• is an electrolyte

• melts at a high temperature

Based on these results, the solid substance could be

(1) Cu (3) C

(2) CuBr2 (4) C6H12O6

Given that Delta. G for the reaction below is - 957.9 kJ, what is Delta. Gf of H2O? 4NH3 (g) + 5O2 (g) Right arrow. 4NO (g) + 6H2O (g) Delta. Gf, NH3 = - 16.66 kJ/mol Delta. Gf, NO = 86.71 kJ/mol

Which chemical reaction do plants use to take carbon dioxide out of the air

Which type of reaction occurs in the following equation? 2NO2 (g) + 2OH" (aq) - - NO2 (aq) + NO, (aq) + H2O (1) a combination redox reaction a displacement redox reaction a synthetic redox reaction a disproportionation redox reaction

Which greenhouse gas is produced by commercial refrigeration and air conditioning systems? carbon dioxide fluorinated gas nitrous oxide methane

Solution (A) contains 0.01 M of NH4Cl; solution (B) contains 0.01 M of NaCl; Solution (C) contains 0.01 M of NaOH; andSolution (D) contains 0.01 M of Ba (OH) 2. Arrange the pHof the solutions in an increasing order.

What mass (in mg) does 2.63 moles of nickel have? 3.56 * 105 mg 1.54 * 105 mg 2.23 * 104 mg 129 mg?

Given the propane molecule C3H8 (g) ! a) What is the balanced equation for the combustion of propane in O2? (20 pts.) b) What is the standard enthalpy change ΔH0 for the reaction at 25°C? (20 pts.

Which of the following happens during a chemical change? Check all of the boxes that apply. One atom or more changes into atoms of another element. New substances with different properties are formed. Solids, liquids, or gases may form.

Which has more inertia: a kilogram of cotton balls or a kilogram of gold?

Democritus who lived in greece during the fourth century b. c suggested that matter is made up of tiny particles that cannot be divided. what did he called them