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To what final volume should you dilute 50.5mL of a 4.30 M KI solution so that 22.5 mL of the diluted solution contains 3.80g of KI?
Use Coulomb's law to calculate the ionization energy in kj/mol of an atom composed of a proton and an electron separated by 138.00 pm
water skier is pulled by a net force of 180 N and has an acceleration of 2.4 m/s2. What is the mass of the skier?
Calculate the partial pressure of O2 produced from 1.44 L of 0.508 M N2O5 solution at 45 degrees C over a period of 20.6 hours if the gas is collected in a 11.7 L - container.
How many joules of heat could be produced from a 170 calorie package of crackers
Calculate the amount of heat required to completely sublime 61.0 g of solid dry ice CO2 at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3 {kJ}/{mol}.
A molecule has the empirical formula C3H7 and has a density of 3.844g/L at STP. If one mole of this gas is burned completely in excess oxygen, how many moles of CO2 are produced
you are making a buffer. you add 57.89g of sodium methanoate to 500.0 ml of water. The molecular mass of sodium methanoate is 68.01 g/mol. The Ka of methanoic acid is 1.8*10^-4. find the pH of the buffer.
(a) How many moles of acetic anhydride were represented by the 6.00mL (density=1.08 g/mL) used in the synthesis (b) How many excess moles of acetic anhydride were used- over and above the amount needed to react with 3.00 g of salicylic acid
Calculate the specific heat capacity of copper, assuming that all the heat lost by the copper is gained by the water. Provide the Answer In: J/g·°C
A set of data gave an average unpopped kernel of 0.12 grams. How many kernels are in a pound of unpopped corn?
Find the de Broglie wavelength (in nm) associated with an electron that is moving with a velocity of 1900 km/s. The electron rest mass is 9.11 x 10-31kg.
What each test reveals about an unknown halide ion? Suggest another test which would confirm that identity. 1.Addition of Cl2 and CH2Cl2 to an aqueous solution of an unknown halide ion led to a dark CH2Cl2 layer.
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