wires number of
vibrations
wire 1 15
wire 2 12
wire 3 20
wire 4 25

the table shows the number of times metal wires vibrate per second when they are plucked one by one. which wire produced the sound with the highest pitch? a) wire 1 b) wire 2 c) wire 3 d) wire 4

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)

Silver reacts with oxygen to produce silver oxide. (write balanced chemical equation and identify type of chemical reaction.)

For the reaction i2(g)+br2(g)←−→2ibr(g), kc=280 at 150 ∘c. suppose that 0.450 mol ibr in a 2.00-l flask is allowed to reach equilibrium at 150 ∘c. what is the equilibrium concentration of 2ibr, i2, br2