What's the chemical formula for potassium sulfide

What is the percent by mass of hydrogen in, C9H6O3

All substances are composed of which type of matter? a. ions b. mixtures c. elements d. molecules

Mass of water 50.003 g 24 95C Temperature of water Specific heat capacity for water 4.184J/g C Mass of metal 3.546 Temperature of metal 99.

Susan shakes a bottle of oil and vinegar salad dressing, then sets it on the table. After a while, the oil rises to the top and the vinegar settles on the bottom of the bottle. Why does this happen?

When aluminum hydroxide (dissolved in water); is mixed with aqueous sulfuric acid (H2SO4) the products are aluminum sulfate (a precipitate) and liquid water

Which atomic orbitals overlap to form the C-O bond of dimethyl ether, (CH3) 20? O c 2sp^3 + 2sp^3 OC 2sp^2 + 0 2p O c 2sp^2 + 0 25p^2 O C 2sp^3 + O 2sp?

For the reaction CO+2H2=CH3OH at 700 K, equilibrium concentrations are [H2]=0.072 M, [CO] = 0.020M, and [CH3OH] = 0.030 M. Calculate K

How to make fluffy slime without contact solution?

When you mixed 20 grams of magnesium and an excess of nitric acid, 1.7 grams of hydrogen was actually produced. What is the percent yield of hydrogen during this reaction? Mg + 2HNO3 Mg (NO3) 2 + H2 3.3 % 48.5 % 25.7 % 102 % 98 %

A small cubical furnace 50 by 50 by 50 cm on the inside is constructed of fireclay brick [k = 1.04 W/m. degree C] with a wall thickness of 10 cm. The inside of the furnace is maintained at 500 degree C, and the outside is maintained at 50 degree C.