How much work (in J) is required to expand the volume of a pump from 0.0...
How much work (in J) is required to expand the volume of a pump from 0.0 L to 2.4L against an external pressure of 1.2atm ? Express your answer using two significant figures.
A gas is allowed to expand from a volume of 4.5 L to a volume of 6.39 L against a constant external pressure of 1.00 atm. How much PV work (in joules) is performed on the surroundings? Express your answer to two decimal places. (1 L·atm = 101.3 J)
Calculate the work done (in joules) by a chemical reaction if the volume increases from 3.2 L to 3.4 L against a constant external pressure of 3.5 atm . Express your answer with two significant figures. I calculated it myself and got 80 J as an answer but it is saying that is incorrect. PLEASE HELP! thanks!
How much work (in J ) is involved in a chemical reaction if the volume decreases from 5.40 to 1.05 L against a constant pressure of 0.887 atm ?
Calculate the work in kilojoules done during a synthesis of ammonia in which the volume contracts from 7.7 L to 4.5 L at a constant external pressure of 43 atm . Express your answer using two significant figures.
During a breath, the average human lung expands by about 0.50 L. If this expansion occurs against an external pressure of 1.0 atm, how much work (in J) is done during the expansion? Express your answer using two significant figures.
A) How much heat must be absorbed by a 23.0 g sample of water to raise its temperature from 30.0 ∘C to 50.0 ∘C? (For water, Cs=4.18J/g∘C.) Express your answer to three significant figures and include the appropriate units. ΔErxn = nothing kJ/mol B) anganese reacts with hydrochloric acid to produce manganese(II) chloride and hydrogen gas. Mn(s)+2HCl(aq) → MnCl2(aq)+H2(g) You may want to reference (Page 271) Section 6.7 while completing this problem. Part A When 0.635 g Mn is combined...
A 1400-N crate rests on the floor. Part A How much work is required to move it at constant speed 5.0 m along the floor against a friction force of 310 N . Express your answer to two significant figures and include the appropriate units. Part B How much work is required to move it at constant speed 5.0 m vertically. Express your answer to two significant figures and include the appropriate units. **please clearly indicate what is the answer...
A gas is allowed to expand at constant temperature from a volume of 2.00 L to 11.20 L against an external pressure of 0.750 atm. If the gas absorbs 128 J of heat from the surroundings, what are the values of q, w, and AU? Pay careful attention to units. 128 J, -4.14 J, 124) 128 J, -699 J, -571 J O-128 J, -419 J, -547 J 128 J, 419 J, 291 ) 128 J, 699 J, 547 )
A 100 W light bulb is placed in a cylinder equipped with a moveable piston. The light bulb is turned on for 2.0×10−2 hour, and the assembly expands from an initial volume of 0.85 L to a final volume of 5.88 L against an external pressure of 1.0 atm. a)Use the wattage of the light bulb and the time it is on to calculate ΔU in joules (assume that the cylinder and light bulb assembly is the system and assume...