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Glucose oxidation has a standard enthalpy of -2803 kJ/mol. What is the total heat produced by human respiration over the course of one year
An engine draws energy from a hot reservoir with a temperature of 1250 K and exhausts energy into a cold reservoir with a temperature of 355 K. What is the power output of this engine
what are the electronic configurations of Pb and Pb2+, also Mo and Mo2+. please explain what are their valence electrons.
Three blocks (1,2,3) of mass 3.00 kg, 2.00 kg, 1.00 kg sit linearly 10.0 cm apart from each other on a frictionless surface. What percent of the initial energy of the bullet was lost
Cool to the final temp at constant volume and then expand to the final pressure at constant temperature. Calculate the work done for each path.
A model rocket is fired vertically from rest. It has a net acceleration of 15.0 m/s2. After 1.1 s, its fuel is exhausted and its only acceleration is that due to gravity. how high does the rocket tr
A spacecraft is in orbit around a planet. The radius of the orbit is 3.2 times the radius of the planet, What is the period of the spacecraft's orbit
It is well known that the element magnesium has three naturally occurring isotopes. Mg-24 represents 79.0% of all magnesium atoms, Mg-25 accounts for 10.0%, and Mg-26 is the remaining 11.0%. If you
a helium tank holds 0.62m^3 of heliumat a pressure of 910 kPa. What volume would the helium occupy
One mole of hydrogen gas at 22 C is compressed through an isobatic process to half its original volume
If the air pressure at a particular place in the mountains is 0.75 atm estimate the temperature at which water boils
Albert is pulling a 25.0 kg block up a hill which has an angle of ï?± = 15.50, calculate the work done by each force listed, and thus find the total work done on the block
If antique brass is 30.0% zinc and 70.0% copper, how many grams of antique brass can be made from 18.0 grams of zinc and 35.1 grams of copper
A bullet of mass 5.00g is fired horizontally into a wooden block of mass 1.17kg resting on a horizontal surface. What was the initial speed of the bullet
A molecule of glucose contains 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. Which is the correct formula.(a) 6CH20 (b) (CH2O)6 (c) C6H12O6 (d) C6(H2O)6
If a charge of 0.30 C passes through a person's chest in 1.0 s, If this rate of charge transfer persists for 4.4s, how many electrons pass through the chest
When 123.8 g of ethylene (C2H4) burns in oxygen to give carbon dioxide and water, how many grams of CO2 are formed
Two resistors are connected in a series to a 15V battery. The voltage drop across the first resistor is 3.5V, What is the resistance of the two resitors
A solution of ammonia and water contains 2.70×1025 water molecules and 8.50×1024 ammonia molecules. How many total hydrogen atoms are in this solution. Enter your answer numerically.
A solution contains 0.06054 M H3PO4 and 0.0386 M NaH2PO4. What volume of 0.05031 M NaOH is required to titrate 10.00 mL of this solution to the first end point
A 100 g meter stick is allowed to pivot about its center. A 1 g bb is shot at the end of the stick (where it is embedded) causing it to rotate, What is the initial velocity of the bb
Calculate the total degrees of freedom over the entire process. Next, calculate the degrees of freedom around each unit operation. Label all calculations.
A shot-putter accelerates a 7.28 kg shot from rest to 14.8 m/s. If this motion takes 1.31 s, what average power was developed
the second contains 0.1 mol Na2S , and the third contains 0.1 mol CaCl2 . What net ionic equations for the precipitation reaction or reactions that occur. What are the spectator ions in the solution
A skier traveling 11.2 m/s reaches the foot of a steady upward 15.8° incline and glides 10.9 m up along this slope before coming to rest