Which one of this is endothermic and which one is exothermic?

CH2+O2 - > CO2+H2O+Energy

CaCo+Energy - > CaCo+CO2

What is the percent mass/volume of a solution having a mass of 65.00 grams and a volume of 600ml

For an ideal gas, which pairs of variables are inversely proportional to each other (if all other factors remain constant) ?

What is one factor that can increase the salinity of ocean water?

What restricts the flow of electrons in a circuit?

Solid sample of a compound and a liquid sample of the same compound are each tested for electrical conductivity which test conclusion in the case of the compound is ionic

What are the cations and anions for V2 (CO3) 3

If you were asked to convert 4.2 x 1022 atoms of aluminum to moles, which of the following should you use for the conversion?

Carbonic acid (H2CO3) does not dissortate 100 percent in water. What type of substance is it? weak acid Strong base strong acid weak base

The standard enthapy of combustion of solid urea co (nh2) 2 is - 632kjmol-1 at 298k

What happens to an isotopes during radioactive