7.A sample of helium gas occupies a volume of 24.6L at 2.20atm. What would its volume be at 3.50atm?Circle the Correct (28.1Lor15.5L)

What elements have 2 electrons inthe 4s sublevel

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false