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Determine the percentage of water in the sample when 0.4023 gram samples of impure barium chloride dehydrate weighed 0.3541 grams after it was dried at the 200oC for two hours.
A satellite is in the circular orbit about the Earth at a distance of one Earth radius above the surface. Determine the velocity of the satellite?
Make thetable of electric bills for different amounts of electricity used by the customer with baseline usage of 300 kWh per month.
At what height above sea level does he make the measurement? A mountaineer in the Rockies measures the air pressure to be 10% below that at sea level. At this altitude he finds a small mountain lake
The two point charges of +20.0 µC and -8.00 µC are separated through a distance of 20.0 cm. Determine the intensity of electric field E midway among these two charges?
What will be the resulting temperature of the water in °C if 14.5 kJ of heat are added to a 39.6 g ice cube at (-5.12)°C? When the specific heat capacity of water = 4.18 J K-1 g-1, ice
The light of wavelength 671 nm is incident on the double slit. The angle among the central bright fringe and the second dark fringe is 4.90°. Find out the separation d of the slits.
The formal charge for the H atoms is 0 for the hydronium atom, H3O+. The formal charge is +1 for the O atom. However, O is the most electronegative atom in hydronium.
The cup is inside a perfectly insulated calorimetric container which prevents heat flow with the outside environment. Determine the final temperature (in °C) of the water after equilibrium is ar
Discuss what color would you expect the phenolphthalein into be after being added to the solution left after an alkali metal reacts totally with the water?
An LC circuit consists of a capacitance of 30 µF and an inductance of 15 mH. AT time t = 0 the charge on the capacitor is around 10 µC and the current is 20 mA. The utmost charge on the
If the atmospheric pressure is 755 mmHg, explain how high (inmmH2O) is the column of water in the tube (d of Hg =13.5 g/mL; d of H2O = 1.00 g/mL)? A long glass tube, sealed at one end, has an inner di
Determine what mass of water at 28.0° C added to the Styrofoam cup having two ice cubes of 60.0 g from a freezer at -20.0° C will outcome in a final temperature of 5.0° C for the drink?
Determine the numbers of grams of the first reactant are necessary to completely react with55.8 grams of the second reactant for the following precipitation reaction.
Determine the numbers of milliliters of mercury will saturate a room that is 15x12x8 feet with the mercury vapor at 25 degrees C? Mercury is an extremely toxic substance.
When 30.0 kcal of heat are supplied to the 5.00 x 102 g of water at 22° C, determine the final temperature of the water?
Determine the numbers of moles of HCl would it take to neutralize the sodium hydroxide produced if you are given a 0.3 g piece of sodium metal to react with water.
Pool is shaped like the cylinder with diameter of 11 m and depth of 2 m. If water is pumped out of pool at rate of 13 m3 per hour, how many hours it takes to empty pool?
If 15.35 calories of the heat were lost on the transfer, and the final temperature of water and alloy in the beaker was 27.95C, describe the heat capacity of the alloy?
A sky diver of 65 kg jumped out of an airplane at an altitude of 0.70 km. She opened her parachute after a while and ultimately landed on the ground having a speed of 5.8 m/s. Determine how much ene
If the Na+ radius is 56.4 % of the Cl- radius and the distance among the Na+ nuclei is 566 pm, calculate the radii of the two atoms? The NaCl crystal structures consist of alternating the N
A 10 micro-coulomb charge is positioned at the origin and a 20 micro-coulomb charge is positioned on the x-axis at x = 40 cm. When an electron is positioned on the y-axis at y = 30 cm, Determine the
6-foot pole will form center support. Determine length x of the side of base so that total amount of canvas required for sides and bottom is 576ft^2.
Compounds of hydrogen and boron are remarkable, not only for their unusual bonding, but also for their reactivity. With the more reactive halogens, for example, diborane (B2H6) forms trihalides even
One component of the magnetic field consists of a magnitude of 0.022 T and points all along the positive x-axis, while the other component consists of a magnitude of 0.030 T and points all along the