Which elements are metals? check all that apply. rhenium (re) boron (b) lithium (li) krypton (kr) phosphorus (p) mercury (hg) ?

55 kg of liquefied natural gas (lng) are stored in a rigid, sealed 0.17 m3 vessel. in this problem, model lng as 100% methane.

How many moles of sodium phosphate would be required to react with 1.0 mol of silver nitrate?

Diamond has a density of 3.26 g/cm3. What is the mass of a diamond that has a volume of 0.276 cm3?

Complete the following Empirical Formula & Molecular Formula problem: 1.) A compound containing 63.15% C, 5.30% H, and 31.55% O. (Assume 100 g sample)

Examples for combustion reactions

A gas has a volume of 27.5 L at 302 K and 1.40 atm. How many moles are in the sample of gas? A. 0.0401 mol B. 0.645 mol C. 1.55 mol D. 2.14 mol

Why does the body of the bird covered with feathers?

One molecule of caffeine contains 8 atoms of carbon, 10 atoms of hydrogen, 2 atoms of oxygen, 4 atoms of nitrogen. write the formula for caffeine with the elements in the order they are given.

A piece of magnesium metal is heated in the presence of chlorine gas, and a reaction takes place. What compound will most likely be produced? A. Mg2C1 B. MgCl3 C. MgCl2 D. MgCI

What is the pressure of the gas in this mercury manometer if h = 81 mm and atmospheric pressure is 749 mmHg