Which of the following represents largest number of particles? a) Atoms in 1 mol of CH4
b) Atoms in 0.5 mol of SO3
c) Atoms in 0.5mol of CO2
d) Atoms in 1 mol of CO

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

Can someone me with 6 to 10 plz this is for masteries test.

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?