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What are the major species present in 0.250 M solutions of each of the following acids? Calculate the pH of each of these solutions.
Draw the major, neutral organic product for each substitution reaction below. For this question, assume that each substitution reaction goes to completion. Disregard elimination.
Size of a hydrogen spherical balloon for lifting a payload, Determine the size of a spherical balloon filled with hydrogen at 30°C and atmospheric pressure for lifting 400Kg payload
What functional groups are the key players in a condensation polymerization reaction. How so.
A sample of oxygen gas has a volume of 131 L at 25°C and a pressure of 0.982 atm. Calculate the volume of this oxygen sample at STP.
A 1.013-g sample of ZnSO4xH2O is dissolved in an aqueous solution of BaCl2. The pure BaSO4 precipitate is filtered out of solution, dried, and its mass is determined to be 0.9400 g. What is the value of x in ZnSO4xH2O?
You have a sample of bone collected from Nevada and you find that it contains strontium-90 and exhibits an activity of 2.5 Bq. How much strontium-90 was present in the bone when the animal died 45 years ago?(The half-life of 90Sr is 29 years.)
Identify the major species present (other than water) in aqueous solutions of the following substances. Include aggregation states. Note that this text uses H3O+.
a) water is sprayed on the ground of an orchard when temperatures are near freezing to keep the fruit from freezing. Explain b) How many kilojoules of energy are released if 5.0 kg of water at 15 degrees C is on the ground and cools and freezes at..
Describe how you would purify p-nitrobenzoic acid from a mixture of a 9.0 g of p-nitrobenzoic acid and 2.0 g of o-nitrobenzoic acid using recrystallization.
The concentration fo certain sodium hydroxide solution was determined phthalate(abbreviated as KHP). KHP is an acid with one acidic hydrogen and a molar mass of 204.22 g/mol.
How many grams of Na3PO4 will be needed to produce 425 mL of a solution that has a concentration of Na+ ions of 0.900 M ?.
hydrogen and nitrogen have different molecular weights, so mass fractions will be different than mole fractions.
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