7. Ammonium nitrate and sodium hydroxide react to yield ammonia, water vapor, and sodium nitrate. Calculate the enthalpy of formation of sodium hydroxide given the following heats of
formation: ammonium nitrate AH°= -230.6 kJ/mol, ammonia AH = -46.2 kJ/mol, water vapor
AH° = -241.8 kJ/mol, sodium nitrate AH°= -467 kJ/mol, and AHºxxn = -55.2 kJ/mol.

Plz mark brainliest 30 points1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s.2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?