Question 6 (1 point) Calculate the number of formula units in 1.87 mol of NH4Cl
O a
1.88 x 1023 NH4CI
Oь
1.13 x 1024 NH4Cl
Ос
6.75 x 1024 NHACI
od
1.12 x 1024 NH4CI

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)