Identify the charge on the nucleus and on the electrons of an atom. How do i do this?

A flask contains 0.370 mol of liquid bromine, br2. determine the number of bromine molecules present in the flask

What is absolute zero equal to in degrees Celsius?

Write the chemical equation for hbro reacting with water. what are the products? do you expect to have any hbro molecules left in solution when the reaction is completed/reaches equilibrium?

Many metals react with oxygen gas to form the metal oxide. for example, calcium reacts as follows. 2 ca (s) + o2 (g) → 2 cao (s) you wish to calculate the mass (g) of calcium oxide that can be prepared from 4.23 g of ca and 2.87 g of o2.

Which of the following elements is chemically most similar to chlorine? A) helium b) sodium c) bromine d) hydrogen

What is the oxidation number of chlorine

What is a triglyceride? Draw the skeletal structure for a saturated triglyceride whose hydrocarbon tails each contain six carbons.

A 500 g block of metal absorbs 5016 J of heat when its temperature changes from 20.0 ⁰C to 30.0 ⁰C. Calculate the specific heat of the metal.

When delta h is negative the reaction will be endothermic?

Why the atoms k2so4 bond