In the chemical reaction, mg + 2hcl mgcl2 + h2 how many moles of hcl are needed to completely react with 3.5 moles of mg? a. 3.0 b. 2.0 c. 7.0 d. 3.5 reset submit

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Which of these conditions most likely produces an unstable isotope?