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individual suffering from a high cholesterol level in her blood has 248 of cholesterol per 100 of blood. If the total blood volume of the individual is 5.4 , how many grams of total blood cholestero
The concentration of Cu2+ in one of the half cells is 1.5 * 10-3 M. what is the concentration of Cu2+ in the other half cell?
A camel sets out to cross the desert, which is 23 km wide in the north-south direction. The camel walks at the uniform speed 2.91 km/hr along a straight line in the direction 55.9? north of East (on
Assuming that atoms are spherical, calculate the fraction of space which is occupied by atoms (i.e., the packing efficiency) in a metal with a face-centered cubic unit cell.
The galvanic cell Zn (s) ¦ Zn2+(aq) ¦¦ Ni2+(aq) ¦ Ni (s) is constructed using a zinc electrode that weighs 32.68 g and is completely immersed in 325 mL. How long will it take for the cell to be comp
than standard enthalpy of formation of Zn2+(aq) is -153.9 kJ/mol. how much heat is evolved when 0.1047g of Zn(s) reacts with excess hydochloric acid?
The barrel of a rifle has a length of 0.806m. A bullet leaves the muzzle of a rifle with a speed of 629 m/s. What is the acceleration of the bullet while in the barrel? A bullet in a rifle does not
Condisder the reaction, 3NO2(g) + H2O(l) --> 2 HNO3(aq) + NO(g), where TRIANGLE H=-137kJ. How many kilojoules are released when 82.8 g of NO2 reacts?
The loaded cab of an elevator has a mass of 3.0 103 kg and moves 172 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab?
Experienced runners know that it is poor practice to ingest large amounts of glucose immediately before running a marathon. What is the metabolic basis for this apparent paradox?
Calculate the binding energy per nucleon (in MeV) for P-32 (atomic mass = 31.9739 u). mass H = 1.007825 u and mass n = 1.008665 u.
On Interstate 10 You drive on Interstate 10 from San Antonio to Houston, half the time at 58 km/h and the other half at 70 km/h. On the way back you travel half the distance at 58 km/h and the othe
The solution has an osmotic pressure of 1.43 atm at 27°C. The analysis of this compound shows that it contains 41.8 percent C, 4.7 percent H, 37.3 percent O, and 16.3 percent N. Calculate the mo
The following reaction is first order with respect to NO and first order with respect to O2, and the rate constant is 5.0 x 104 M-1s-1: 2NO(g) + O2(g) --> N2O4(g)
An unmarked police car traveling a constant 105 km/h is passed by a speeder traveling 140 km/h. Precisely 1.00 s after the speeder passes, the police officer steps on the accelerator; if the police
What is the ratio of enrichment of U-235 after 34 diffusions of UF6? Gaseous diffusion is used to enrich natural uranium in U-235.
A 59-kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.19. What would be the magnitude of the acceleration?
The precipitate that forms in the qualitative analysis of the chloride ions is AgCl. Determine the number of moles of AgCl that are produced by each mole of [Co(NH3)5Cl]Cl2.
What is the percent composition by mass of sulfur in the compound MgSO4 (gram-formula mass = 120. grams per mole)?
Calculate the freezing point of a solution containing 5.0 grams of KCl and 550.0 grams of water. The molal-freezing-point-depression constant for water is .86 °C/m.
Calculate the energy in J of a photon in the radar region of the electromagnetic spectrum that has a wavelength of 24.3 cm. Express answer in scientific notation.
A mole of photons in the blue visible region of the electromagnetic spectrum has an energy of 2.54 × 10 2 kJ/mol, calculate the frequency in s-1 of the photon. Express answer in scientific not
A toxicology studying mustard gas prepares a mixture of .675M SCl2 and .973 M C2H4 and allows it to react at room temperature (20.0 C). at equilibrium [S(CH2CH2Cl)2]=.350 M, calculate Kp.
A 4.05 g sample of a compound containing only C, H, and O was burned completely. The only combustion products were 10.942 g CO2 and 4.476 g H2O. What is the empirical formula of the compound?
A 3.40 kg block is held in place by a constant applied force of 85.0 N that acts at an angle of 55.0° with the horizontal, as in Figure P4.60. Determine the minimum coefficient of static frictio