Which list of elements contains a metal, a metalloid, a nonmetal, and a noble gas

7A. Hydrogen peroxide decomposes into water vapor and oxygen. Suppose you have 225 g of a solution that is 50% hydrogen peroxide by mass. What volume of oxygen can be produced at 25oC and 792 torr?

The volume of an object is 4cm3 and its mass is 42g. What is its density?

What statement is MOST accurate about a chlorine ion? A) The chlorine ion is a result of chlorine's relatively low electronegativity. B) The ionic radius of a chlorine ion is larger than the radius of a chlorine atom.

The brown solid that formed is zinc copper oxygen iron

Similarities and differences between a liquid and gas

At stp conditions the volume of 22g of co2 is?

32 Which electron configuration represents the electrons in an atom of Ga in an excited state? (I) 2-8-17-3 (3) 2-8-18-3 (2) 2-8-17-4 (4) 2-8-18-4

Why do you think that the particles of a suspension settle out but the particles of a colloid do not

A solution that is 33.6 % by mass of phenol (C6H5OH) in water is prepared. What is the mole fraction of the phenol?

Describe the law of conservation of momentum