You are in a hot air balloon 265 meters above sea level. In the distance, you can see 2 ships. One ship has an angle of depression of 35° , and the other ship has an angle of depression of 25°. How far apart are the ships? (round to 2 decimal places)

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.