Please help! True or false? Strong acids such as nitric acid ionise completely when dissolved in water.

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

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same