Which of the following is not equivalent to be rational below? -3/4 a. -3/4 b. -3/-4 3. -3/-4 4. 3/-4

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?