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What is the pH of a 0.15 M solution of the weak base ammonia (NH3)? The Ka of the conjugate acid is (NH4) is 5.6e-10.
Calculate the mass of propylene glycol that must be added to 0.500 kg of water to reduce the vapor pressure by 4.60 torr at 40 degrees celcius.
The ionization constant, Ka, for HOI(aq), hypoiodous acid, is 2.3 × 10-11. What is the pH of a 0.050 molar solution of sodium hypoiodite, which contains the hypoiodite ion?
Calculate the molar mass that would be obtained from the actual experimental data under the following conditions. The unknown is methyl propyl ether (CH3OC3H7)
How do the spacings of the energy levels of X and H compare, where X has one electron like the H atom but has different energy levels and for X: E = - (RH / n3) and RH is the same as H (2.179 ×10?18J)?
How many calories of heat are necessary to raise the temperature of 350 ml of water from 1.00oC to 5.00oC.
A pure silver ring contains 2.80 x 10^22 silver atoms. How many silver atoms does it contain. Please show your steps and solutions.
The mass of a golf ball is 45.9g . If it leaves the tee with a speed of 75.0m/s , what is its corresponding wavelength
A compound of a transition metal and iodine is 65.1% metal by mass. How many grams of iodine is present in 859 g of this compound?
Determine the final temperature of a gold nugget (mass = 376 g) that starts at 398 K and loses 4.85 kJ of heat to a snowbank when it is lost. The specific heat capacity of gold is 0.128 J/g°C.
In photosynthesis, plants from glucose (C6H12O6) and oxygen from carbon dioxide and water
How many moles of water will be formed from 0.2 mole of CH4 reacting with enough O2. In this reaction CH4+2O2--->CO2+2H2O
What ions and/or molecules are present in relatively large proportions in a solution of a weak acid H2S (aq)?
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