Which term describes the degree to which an element attracts electrons?

You need 70.2 J to raise the temperature of 34.0g of ammonia, NH3 (g), from 23.0C to 24.0C. Calculate the specific heat of ammonia.

Which substance will dissociate when added to water?

Qualitatively, what happens to the hydroxide ion concentration if you decrease the hydronium ion concentration?

How does Bohr's model of the atom compare with Thomson's model?

2.0801 mol of bromine gas is held at 4.258 atm and 284.92 K. What is the volume of its container in liters?

Which represents the balanced nuclear equation for the beta plus decay of C-11? Superscript 11 subscript 6 upper C right arrow superscript 11 subscript 5 upper B plus superscript 0 subscript plus 1 e.

Make a prediction for how to identify an unknown element and the chemical composition of a star

The density of HCN (hydrogen cyanide) gas at STP is 1.21g/L. What volume will 100.0g of HCN occupy at STP? A) 121 L B) 0.012 L C) 82.6 L D) none of the above

A 20.0 ml sample of 0.150 m ethylamine is titrated with 0.0981 m hcl. what is the ph after the addition of 5.0 ml of hcl? for ethylamine, pkb = 3.25

Some polymers are elastic because they are made of a. carbon. c. sugar and alcohol. b. phosphate ladders. d. cross-linked chains.