What does a safety symbol showing an apron mean?
poisonous chemicals
protective clothing must be worn
fire hazard
electrical hazard

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

Which of the following nuclei would be the least stable a 2 protons, 2 neutrons b 1 proton 1 neutron c 1 proton 3 neutrons d 1 proton 2 neutrons

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?