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At 2000°C, 5.0×10-3 mol CO2 is introduced into a 1.0 L container and the following reaction comes to equilibrium: 2CO2(g) <-> 2CO(g) + O2(g) Kc = 6.4×10-7 a. Calculate the equilibrium concentrations of CO and O2. b. What fraction of the CO2 is decomposed...

The square root of 18 is between which of the following pairs of numbers? (1) 1.8 and 1.9 (2) 3 and 4 (3) 4 and 5 (4) 5 and 6 (5) 17 and 19 I think the answer is (1) ????

In 1957, killer bees started to spread out from Sao Paulo, Brazil at the rate of about 200 miles a year. At this rate, in what year were they expected in the vicinity of Honduras, Central America- a distance of 3800 miles? (1) 1960 (2) 1966 (3) 1973 (4) 1...

A fence post casts a 4-foot shadow at the same time that a tree next to it casts a 64-foot shadow. How tall is the tree? (1) 66 (2) 70 (3) 74 (4) 78 (5) not enough information is given I believe the correct answer is #1 66 ????

a. (5 2/3, 2 1/4) b. (5/6, 1/6) c. (1 5/12, 1/20)

4=2x2 9=3x3 16=4x4 25=5x5 36=6x6 am I right ?

3 and 4 Ms. Sue so my answer is #2 ??? right

oops, its 4 and 5 ? so answer#3 my correction

oh thank you Ms. Sue so awesome

thanks Ms. Sue, I feel like I'm getting smarter, I love it ;)

4 foot

well not enough information. because its just the shadow its giving us ! right ?

hummmmm.... that's a tough one

Ms. Sue help.. give me a hint

no ma'am

so not enough information. the correct answer is #5 ??

ooh THANK YOU MS.SUE ;)