Which of the following causes high and low tides on earth? a. the moon's gravitational pull on earth causes water to bulge on two sides of the earth. b. water swells when tsunamis occur in two areas of earth at the same time. c. the earth's rotation is so fast, water will swell and shrink twice a day. d. the earth is tilted on an axis, causing water to spread unevenly throughout the planet.

Adepositional also feature that forms where a stream enters a lake or an ocean is a

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

For the reaction c6h14(g) & longrightarrow; c6h6(g) + 4h2(g), δp(h2)/δt was found to be 2.5 x 10-2 atm/s, where δp(h2) is the change in pressure of hydrogen. determine δp(c6h14)/δt for this reaction at the same time.