The rate constant for a first-order reaction is 0. 54 s−1. What is the half-life of this reaction if the initial concentration is 0. 33 m?.

It's 90 °f in the shop with high humidity. what pressure will be shown on the high-side pressure gauge (ac system on)?             a.  10 to 50 psi    b.  40 to 140 psi  c.  210 to 290 psi  d.  at least 350 psi

If inflation is 6% and nominal gdp grew by 4%, then during the same period real gdp changed by a) -2% b) 2% c) 4% d) 5%

Which of the following always exist between two objects having mass ● elastic force ● contact force ●gravitational force ●magnetic force