About how long does it take earth to complete one revolution around the sun

What are some different types of gasses.

Two technicians are discussing refrigerant lines. Technician A says that line connections must be tight but not so tight that air can't get through.

You want to determine ΔH o for the reaction Zn (s) + 2HCl (aq) → ZnCl2 (aq) + H2 (g) To do so, you first determine the heat capacity of a calorimeter using the following reaction, whose ΔH o is known: NaOH (aq) + HCl (aq) → NaCl (aq) + H2O (l) ΔH o =

Which substance conducts electricity under standard conditions because the substance contains mobile electrons?

The keq of a reaction is 4 x 10-7. at equilibrium, the

If concentrated sulfuric acid is spilled during the experiment, what is the proper procedure for cleaning the spill?

Table salt is formed when an electron is transferred from a sodium atom to a

Convert 45 joules to heat calories

What is 450 g of flour a measure of? A) Weight B) Inertia C) Gravity D) Mass

List the four (4) ways you can tell that a chemical reaction has occurred.