Which of the following best illustrates the law of conservation of mass?
A. 3 AgNO3 + 2 Cu → Cu(NO3)2 + 2 Ag
B. 2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag
C. AgNO3 + 2 Cu → 2 Cu(NO3)2 + 2 Ag

What effect does nuclear radiation have on atoms?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution. calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?