1. A student measures the mass and volume of a sample of iron at room temperature and 101.3 kPa. The mass is 30.0 grams and the volume is 4.00 cubic centimeters. The student
calculates the density of the sample. What is the percent error of the student's calculated
density?

Which of the following statements is true? question 4 options: nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.

Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.