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1. A bottle is labeled 20.0 percent by mass HCl with a density of 1.096g/ml calculate the morality. Please show and explain work?
2. What is the concentration in ppm of 3.70 L solution (d=1.00g/ml) containing 4.21x10^-7 kg of the pestcide DDT?
Calculate the radiation dosage (in grays) for an 85-kg person that is exposed for 7.0 seconds to a 3.0 Ci source of beta radiation. Assume that 100% of the radiation is absorbed and each beta particle has an energy of 1.7× 10-13 J.
What was the temperature of the sample after heating. Please show work I've asked this question before and I'm getting mixed answers.
Problem- What is the solubility of oxygen in lake water at 28celsius?? Assume that the pKH of oxygen at this temperature is twice that of CO2. Give your answer in mg/L.
patient if the recommended dose is 6.50 mg of aspirin per Kg of body weight? How many molecules does the patient ingest?
A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill
oxygen is dissolved in water at a concentration of 0.695gl at a pressure of 13.5atm at 25degrees c. what is the henrys
Question- What is the pH of a buffer that contains 0.15 mol of propionic acid and 0.10 mol of sodium propionate in 1.20 L? No word count please provide correct answer
You make 1.00 L of a buffered solution (pH = 4.00) by mixing acetic acid and sodium acetate. You have 1.00 M solutions of each component of the buffered solution. What volume of each solution do you mix to make such a buffered solution
Problem- Find the pH and pKa at the half equivalence point when 25mL of .1M acetic acid is titrated by .1M NaOH and the volume of NaOH at the equivalence point and half equivalence point is 20.9mL and 10.45mL respectively.
The polyatomic ion [HCNXeF] + has all the atoms bonded in the listed order, as well as its molecular geometry is entirely linear. Provide a Lewis structure that is consistent with this molecular geometry.
the evaporation of water is endothermic as indicated by the followingh2olh2ogheat44.01what minimum mass of water has to
Problem- What partial pressure of oxygen above the water (in atmospheres at 0 C) is needed to obtain this concentration [4mg/L]? The solubility of O2 in water at 0C and 1 atm partial pressure is 2.21*10^- 3 mol/L.
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