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Carry out the following mathematical operations, and give each result with the correct number of significant figures. (1.05 x10-3)/ (6.135 )
When a sample of phosphorus-32 was placed 1 cm from the detector, the intensity of its radiation was measured to be 491 counts per second. What would its activity be 2 cm from the detector
Calculate the order of the reaction with respect to reactant C, the reaction rate constant, the overall order of reaction, and write the rate law for the reaction.
A solution of HCl has a pH of 2.50. How many grams of HCl are there in 0.250 L of this solution? How many grams of HCl are in 250mL of an HCl solution that has twice this pH
A 782 mL gas sample at STP is compressed to a volume of 131 mL, and the temperature is increased to 22?C. What is the new pressure of the gas in Pa?Answer in units of Pa.
What is the concentration of the H 2 SO 4 if a chemist titrates 300.0 mL of Sodium Hydroxide NaOH with a 5.0 M solution of NaOH and needs only 3.4 mL of the base to reach the endpoint,?
A perfectly square piece of gold foil measuring 3.3 mm on an edge is isolated from a bottle of liqueur
if in a certain experiment over a specific time period 0.0027 mol ph3 is consumed in a 1.8-l container each second of
While carrying out Part A, some of the solid calcium hydroxide is inadvertently transferred to the beaker and titrated. a. Will more, less, or the same amount of HCl be used for the titration? Explain.
What is the half-life of a compound if 89 percent of a given sample of the compound decomposes in 56 min? Assume first-order kinetics.
Calculate the pH of each of the following buffered solutions. 0.10M acetic acid/0.25M sodium acetate
Litmus paper is a classic pH indicator. Describe the color change litmus paper undergoes when placed in both acidic and basic solutions
Draw the molecular orbitals for the following molecules CH20. Label the hybridization of all non-hydrogen atoms
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