What is the mass number of a uranium isotope that has 92 protons and 143 neutrons?

In which direction will the following reaction go if the standard reduction potentials are 0.80 v for ag/ag+ and –0.44 v for fe/fe2+? ag+ + fe → ag + fe2+ a.)forward b.)the reaction cannot occur. c.) not enough information is given. d.) reverse

How many atoms are there in 5.70 mol of mg

How does the motion of particles in a gas change as the gas cools