Apiece of zinc of mass 5.00 g is dropped into a beaker containing 250. ml of 0.560 m hydrochloric acid. calculate in joules the work done by the system as a result of the reaction. the atmospheric pressure is 836 torr and the temperature is 23ºc. indicate any assumptions or approximations.

Assume that the variables x and y are inversely related. if k = 18, what is the value of y for each of the following points? be sure and record your data to be used in the following problem.

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

When you perform this reaction, what could remain at the end of the reaction? check all that apply. excess reactant aqueous copper chloride excess reactant aluminum oxygen product solid copper carbon dioxide product aqueous aluminum chloride water