Which bonds form in the reaction shown in the diagram? 2H + O , H-H O=0 H-H 2H 0 H-OH H-OH O A. The bonds between the two hydrogen atoms O B. The bonds between the two oxygen atoms O C. The bonds between the oxygen and hydrogen atoms OD. The bonds between the two hydrogen atoms and between the two oxygen atoms SUBMIT PREVIOUS

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s

Which statements did both aristotle and ptolemy assume? check all that apply.