Which substance is a diatomic molecule

State the 4 major ideas of Dalton's Atomic Theory.

Cooking in a microwave oven is possible because of

The formula for sulfuric acid is H2SO4. A mole of sulfuric acid would have a mass of ___ grams.

How many moles of acetylene (C2H6) had occupy a volume of 3.25L at STP?

A reaction takes place in a bomb calorimeter. if the calorimeter decreases in temperature over the course of the reaction, what are the signs of qcal and qrxn?

Which of the following energy level changes for an electron is most energetic? 3 → 2 5 → 2 4 → 2

Is baking soda a element compound homogeneous mixture or heterogeneous mixture?

For the reaction: C (CH3) 3I + Cl - → C (CH3) 3Cl + I- What is the activation barrier for the SN2 reaction mechanism, in units of kcal/mol? Provide your answer to the nearest 0.1 kcal/mol.

Which of the following utilizes the measurement of a short - or long-lived radioactive element, with its decay product, to determine the absolute age of an object? A. varves B. radiometric dating C. dendrochronology

A student-made sample of sodium carbonate weighing 0.169g that generates 37.6 mL of CO2 gas when treated with sulfuric acid. The atmospheric pressure in the lab is 731.8 mm Hg and the temp. is 21.3-degree Celsius. A.