you are planning an experiment to find whether the rate at which water freezes depends on the shape of its container. identify the manipulate variable in the responding variable. list the other variables you would control.

In acid rain, nitrogen oxides and sulfur oxides from emissions cause a change in the normal pH level. Which of the following is not true of acid rain? A) Some of the damaging oxides are produced by natural sources such as volcanoes and forest fires.

How many grams of calcium chloride are dissolved in 5.65 liters of a 0.11 m solution of calcium choride?

Calculate the mass of precipitate that forms when 250.0 mL of an aqueous solution containing 35.5 g of lead (II) nitrate reacts with excess sodium iodide solution.

How much heat will be released when 0.750 moles of carbon monoxide (CO) react in an excess of oxygen gas? 2CO (g) + O2 (g) → 2CO2 (g) + 566 kJ

You have a thermometer in your hand and your phone says that the current temperature in your location is 35 degrees C (actual temperature). The thermometer says that it is 50 degrees C. You repeat 5 trials and record 50 degrees C every time.

A mixture of He He, N 2 N2, and Ar Ar has a pressure of 22.1 22.1 atm at 28.0 28.0 °C. If the partial pressure of He He is 2475 2475 torr and that of Ar Ar is 1049 1049 mm Hg, what is the partial pressure of N 2 N2?

Oceans make the temperaturs of nearby land more extreme ... True or false

The Greek letter D stands for A. Mass of B. Rate of C. Change in D. Heat stored in

14. Two or more substances that are together but do not combine to form a new, pure substance.

A solution of a compound with a known extinction coefficient of 23,100 M-1cm-1 has an absorbance of 0.735 in a 1.30cm path length, what is the concentration of the solution