Why should you never heat a test tube that is closed?

This equation indicates that the reaction absorbs heat. What is this type of reaction called? H2O + heat → H2 + O2 A. an exothermic reaction B. a combustion reaction C. an endothermic reaction D. a heat-releasing reaction

A zero-order reaction has a constant rate of 4.40*10-4 m/s. if after 45.0 seconds the concentration has dropped to 1.50*10-2 m, what was the initial concentration? express your answer with the appropriate units.

What are the advantages and disadvantages of using electrolysis?

How many grams of Al2O3 can form when 23.6 g Al react with excess Fe2O3

Some elements are not listed in the periodic table? True or False?

What is true of all body except sex cells

If a man has a mass of 83 kilograms on Earth, what will the force of gravity on his body be on the moon? A. 4,880.4 N B. 135.6 N C. 813.4 N D. 318.5 N

Densities of solutions of sodium hydroxide and water at 20 °C are given by the equation: p 1.003 + 1.06Wao where p is the density of the solution in g/cm (grams of solution per cm3 of solution) and wNaOH is the weight fraction of sodium hydroxide.

What is limiting reajent?

What elements react the most? Like have the most reactivity.