Which of the following are elements nd which are compounds H2, HCI, Na, Al2O3, H2O

0.070g of hydride of carbon occupies 56cm^3 at S. T. P when vaporized and contained 14.29% by mass of hydrogen. What is the formula for the hydrocarbon

The outer planets, referred to as the gas giants, contain and satellites.

Is a freshly squeezed grapefruit a solution or a mechanical mixture?

The average propane cylinder for a residential grill holds approximately 18 kg of propane. how much energy (in kj) is released by the combustion of 20.00 kilograms of propane in sufficient oxygen?

The addition of which substance will decrease the solubility of AgNO3 in water? 1) 0.1 M potassium chloride 2) 0.1 M barium chloride 3) 0.1 M sodium nitrate 4) 0.1 M sodium carbonate

Explain an example of a chemical bond

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?