Calculate the ph of solution of salt
Sodium benzoate (C6H5COONa) is used as a food preservative. Calculate the pH of a 0.050 M solution of this salt. Ka for benzoic acid is 6.5 x 10-5
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Calculate the amount of heat required to completely sublime 34.0g of solid dry ice at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3KJ/mol .
using percent yield, how many grams of Aluminium must be used to react with an excess of hydrogen phosphate to produce 35.8g of aluminum phosphate?
Suppose you wanted to heat a mug of water (250 mL) from room temperature 25 C to 100 C to make a cup of tea. How much energy (in units of calories and joules) would you need from your microwave?
A rigid container of O2 has a pressure of 340 kPa at a temperature of 713 K. What is the pressure at 273 K?
A layer of clay 4m thick lies between two layers of sand each 4m thick, the top of the upper layer of sand being ground level. The water table is 2m below ground level but the lower layer of sand is under artesian pressure.
Making ice cream involves surrounding the ice cream canister with a bath of salted ice water. To get the mix to freeze at 7.00ºC, how many grams of salt (NaCl; molar mass = 58) will you need to add to 3.5 kg of ice water bath? (Kf of water =
Calculate the mass of solid AgNO3 that can be added to 2.0L of a 0.10 M K2CrO4 solution in order to just start precipitation.
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Living organisms can be produced by sexual or asexual reproduction, which statement is correct about genetic variation:
Problem: "The number of phases in which no division occurs is the same in both spermatogenesis and oogenesis"
The restriction enzyme BamHI is produced by certain strains of Bacillus amyloliquefaciens. The enzyme, which recognizes the sequence GGATCC
Problem: The primary wave on the aggregation printout below represents which of the following?
Question: Which of the following genetic syndromes are protective against malaria?
Do not use the name of the object/organism as a description of its trait. "Moves like a snake" would not be very useful to a person who did not recognize a snak
The purpose of animal geography is to understand: Question options: how nonhuman species participate in interactions with humans