I have added 15 L of air to a balloon at STP. If I take the balloon with me to Denver, where the air pressure is 0.85 atm and the temperature is -10° C, what will the new volume of the balloon be?

its first and third is your answer i did the qustion the fourth isnt right

fe 55.85 g/mol and h2o 18.02 g/mol.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.