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Compute the weight of carbon monoxide having same no of oxygen atoms as are present in 88g of carbon dioxide?
Compute the number of atoms of each type in 5.3grams of Na2CO3 ?
calculate the hydrogen ion concentration in moll for each of the following solutions.a 2.42 b a solution whose ph is
At 23.6 degrees Celsius, 0.500 L of a solution containing 0.302grams of an antibiotic has an osmotic pressure of 8.34 mmHg. Explain what is its molecular mass
the ratio of carbon to hydrogen to nitrogen in nicotine is 5 to 7 to 1. what is the molecular formula of nicotine if
What single reagent could you add that would allow you to differentiate between the members of each pair of solid compounds below? Tell what happens to each substance when the reagent is added and write a balanced net ionic equation wherever a rea..
Phosgene (COCl2) is a toxic substance that forms readily from carbon monoxide and chlorine at elevated temperatures: CO (g)+ Cl2 (g) ? COCl2 (g).
Calculate the freezing point and normal boiling point of the following solution: 25.0 mL of ethanol, C2H5OH (d=0.780 g/mL), in 735 g of water (d=1.00 g/cm3)
the solubility of a gas in water depends on a nature of the gas b temperature c pressure of the gas d all of the
Determine the concentration of the sulphuric acid (H2SO4) solution If It takes 58 mL of 0.124 M potassium hydroxide(KOH) to neutralize 41.5 mL of sulphuric acid( H2SO4) solution.? Express your answers in units of moles/liter
Chlorophenols impart unpleasant taste as well as odor to drinking water at concentration as low as 5 mg-(m3)-1. They are formed when the chlorine reacts with water that contains phenols. Explain what the unpleasant taste and odor threshold in unit..
A lithium atom is contained in a cubic well 10 nm on a side. (a) Calculate the energy (joules) required to achieve the transitions from the ground state to the first excited state for this system
Define if 4.1 g of Pb(NO3)2 is added to enough water to make a 100.0 mL solution, explain what is the final concentration of free nitrate ions (NO3-)
A sample of krypton gas at a pressure of 0.621 atm and a temperature of 20.7oC, occupies a volume of 17.2 liters. If the gas is compressed at constant temperature to a volume of 5.62 liters, the pressure of the gas sample will be
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