Create the bonds between these elements

a) K and P

b) N and Ca

c) C and H

When a 0.680 g sample of olive oil is burned in a calorimeter, the heat released increases the temperature of 370 g of water from 22.7 ∘C to 38.9 ∘C. What is the energy value of the olive oil in kJ/g?

Solid aluminum metal and diatomic bromine liquid react spontaneously to form a solid product. give the balanced chemical equation (including phases) that describes this reaction.

Suppose that 25 g of each substance is initially at 27.0 °c. what is the final temperature of each substance upon absorbing 2.35 kj of heat? a. gold b. silver

What is the molarity of a solution that has. 8 mols of solute in. 5 L of water?

Calculate the final Temperature (Kelvin) required to change the volume of 100 L of Helium at 256 K to 150 L, assuming the pressure is constant.

Which formula represents a solution? No explanation needed.

When electrons are removed from the outermost shell of a calcium atom, the atom becomes A) an anion that has a larger radius than the atom. B) an anion that has a smaller radius than the atom. C) a cation that has a larger radius than the atom.

A molecule of an unsaturated hydrocarbon must have 1) at least one single carbon-carbon bond 2) at least one multiple carbon-carbon bond 3) two or more single carbon-carbon bonds 4) two or more multiple carbon-carbon bonds

A 8.85 g sample of hydrate of sodium carbonate, Na2CO3 ∙ XH2O was heated carefully until no more mass was lost from the sample. After heating, the final weight of the material was 7.55 g. How many moles of water left the compound? 0 moles

PF3Br2 is a nonpolar molecule. Based on this information, determine the F-P-F bond angle, the Br-P-Br bond angle, and the F-P-Br bond angle. Enter the number of degrees of the F-P-F, Br-P-Br, and F-P-Br bond angles, separated by commas (e. g.