an unknown compound contains only carbon, hydrogen, and oxygen (cxhyoz). combustion of 3.00 g of this compound produced 4.40 g of carbon dioxide and 1.80 g of water.

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

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

Abag contains even and odd numbered balls in the ratio of 3: 7, respectively. for each of the following, what is the probability of drawing an even-numbered ball? the total number of balls is 240 and 30 of the odd-numbered balls are renumbered by multiplying the numbers by 4.