The energy put into a machine to make it work.

The following is an example of which type of chemical reaction? AgNO3 (aq) + NaCl (aq) - - > AgCl (s) + NaNO3 (aq) Single replacement Decomposition Double replacement Combustion

How is enthalpy used to predict whether a reaction is endothermic or exothermic?

John Dalton believed which of the following about atoms?

What is the main organ of the circulatory system? arteries veins heart capillaries

According to cavalieri's principle, which qualities must be congruent in order for two solids to have the same volume? select all that apply. height surface area cross-sectional area apothem length

Define prediction and explain how it is used to formulate a hypothesis.

A group of organisms that breed and produce offspring that can breed. A. Species B. ecosystem C. Biodiversity

What is the molality of a solution containing 100 grams of glucose (C6H12O6, molar mass = 180 g/mol) dissolved in 2.5 kg of water? 0.22 m 72 m 7200 m 40 m

A battery is constructed based on the oxidation of magnesium and the reduction of cu2+. the initial concentrations of mg2 + and cu2 + are 1.2*10-4 m and 1.44 m, respectively, in 1.0-liter half-cells. how long can the battery deliver 5.

A buffer solution is made that is 0.417 M in and 0.417 M in. If for is, what is the pH of the buffer solution? pH = Write the net ionic equation for the reaction that occurs when 0.120 mol is added to 1.00 L of the buffer solution.