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What is the electric flux through the (a) top face, (b) bottom face, (c) left face, and (d) back face? (e) What is the net electric flux through the cube?
A compound containing sulfur, nitrogen, and hydrogen has 86.6% sulfur, 12.6% nitrogen, and 0.91% hydrogen. A 1.263-g sample of this compound was dissolved in 25.00 g of bromoform, producing a soluti
The vertical component of Earth's magnetic field in this region is 40.0 µT directed downward. Calculate the induced emf between the ends of the wire and determine which end is positive.
A helium balloon with a volume of 410 mm is cooled from 48 deg celsius to -37 deg, the pressure on the gas is reduced from 110 kpa to 91 kpa what is the volume of the gas at the lower temp and pres
When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 25.18 °C to 47.53 °C. What is the enthalpy change per gram of KOH dissolved in the wa
What mass of water at 27.0 °C must be allowed to come to thermal equilibrium with a 1.59-kg cube of aluminum initially at 1.50 x 102 °C to lower the temperature of the aluminum to 54.8 °C
If the balloon is filled with 2.4 L of helium at sea level, is released and rises to an altitude at which the atmospheric pressure is only 504 mm Hg, will the balloon burst?
Assuming a patient takes 1.80 s to inhale, find the magnitude of the average induced emf in the coil during that time.
Calculate the pH of a buffer prepared by mixing 50.0 mL of 1.00 M ammonia and 50.0 mL of 1.00 M ammonium nitrate (Remember to take dilution into account)
The plane of a rectangular coil, 4.0 cm by 7.0 cm, is perpendicular to the direction of a magnetic field . If the coil has 50 turns and a total resistance of 8.0 O, at what rate must the magnitude o
A compound of phosphorus and chlorine used in the manufacture of a flame retardant treatment for fabrics contains 1.20 grams of phosphorus for every 4.12 g. of chlorine.
A 7.58 gram sample of benzoic acid, C6H5CO2H, is dissolved in 100 ml of benzene. The density of benzene is .879 g/ml. What is the molality of the benzoic acid?
What is the hydronium-ion concentration of a buffer solution that is .25 M Na2HPO4 and .40 M NaH2PO4? For H3PO4, (Ka1=6.9x10-3), (Ka2=6.2x10-8) and (Ka3=4.8x10-13).
A) what is the max tension in the cable supporting the elevator? B) if the elevator was accelerating downwards at a rate of .2g, what is the tension in the cable supporting the elevator?
For a hydrogen atom, calculate the energy of a photon in the Balmer series that results from the transition n = 3 to n = 2. The Rydberg constant is 1.0974 × 107 m-1. (h = 6.6262 × 10-34
A 5.96-g sample of homogentisic acid, a weak organic acid having Ka=4.0 x 10^-5, is dissolved in 35.0 mL of water and its pH is measured to be 2.20. What is the molar mass of homogentisic acid?
500 mL of a gas is collected under the following conditions, Pressure = 750 torr and temperture = 24 degree celsius. What will the new volume be when the temperature is 341 K and the pressure is 4.
Two samples of calcium flouride are decomposed into their constituent elements. The first sample produced 1.64 g of calcium and 1.56 g of flourine. If the second sample produced 294 mg of fluorine,
Find the flux of Earth's magnetic field of magnitude 5.00 10-5 T through a square loop of area 40.0 cm2 for the following: (a) when the field is perpendicular to the plane of the loop
Find the number of moles of water that has been lost from MgSO4.7H2O, when you heat 2.9560 g of this hydrate to give the anhydrous MgSO4. Molar mass of MgSO4.7H2O = 246.5 g/mol and molar mass of H2O
A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 42.0 m/s. Then the truck travels for 56.0 s at constant speed until the brakes are applied, stoppi
An oil-filled capacitor has square parallel plates 23 cm on a side, separated by 0.48 mm. When the capacitor is charged to 88 V , the stored charge is 7.7 uC (micro Coulomb's). Find the dielectric
Calculate the density of a volatile liquid in its gaseous state at pressure = 752.0 mm Hg, and temperature = 99.5 0C , if its molar mass is 84.0g/mol; R = 0.0821 atm.l / mol.K.
When a non-volatile solute dissolved in water the freezing point of the solution is lowered while its boiling point is increased. Give a practical example from our life on both cases.
You have three 3.0 uF capacitors. Two of the capacitors are in parallel, and this parallel combination is in series with the third capacitor. This capacitor combination is connected across a 30-V ba