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which monatomic ion has a charge of 1+ and the electron configuration [kr] 4d10 5s2? write the element symbol and charge
the equation of line determined from a Beers law plot is y=0.195x+0.4, what is the resistance of an unknown water sample if the assumed concentration is 1.8ppm. please show your work.
Calculate the quantity of heat energy in kilocalories evolved when 75 g of liquid water forms ice at 0 0C. (heat of solidification = 80 cal/g).
Any number of green plants can photosynthesize glucose (C6H12O6) from carbon dioxide and water, producing oxygen as the remaining product. in an experiment in a biochemistry lab, 500 ml of oxygen was produced in such experiment.
In a chemical reaction 3 moles of one gas and 2 moles of a second gas react to form 5 moles of a third gas. In which of the processes described below should the entropy increase.
Calculate the pH at the equivalence point in the titration of 25.00 mL of 0.120 M chloropropanoic acid (Ka = 7.8 x 10-5)
What is the initial sulfur dioxide concentration (in mol/L or M)?
Calculate the average molar mass of this element. The mass of the neutron is 1.67262164 × 10324 g and the mass of the proton is 1.67492721 × 10324 g. Assume for each isotope, the mass defect (that is, the mass of the neutrons and protons that is c..
what volume of 3m sulphuric acid is required to neutralize all of the c7h5nao3 and the excess sodium hydroxide present
Suppose that a fully charged lead-acid battery contains 1.16 L of 5.00 M H2SO4. What will be the concentration of HSO4- in the battery after 2.83 A of current is drawn from the battery for 6.3 h
Methyl Orange was synthesized using a diazo-coupling reaction. Show how you would synthesize Yellow #3 and Red #32
Ammonia is both a donor and an acceptor of hydrogen in hydrogen-bond formation. Draw a diagram showing the hydrogen bonding of an ammonia molecule with two other ammonia molecules.
A solution of an unknown nonvolatile electrolyte was prepared by dissolving 0.250 g of a substance in 40 g of CCl4. The boiling point of the resultant solution was 0.357 degrees Celsius higher than that of pure solvent. Calculate the molar mass of..
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