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snickers bar holds 1.17 megajoules of energy. How many large calories or Calories are present in a snickers bar?Select one:a. 279 Caloriesb. 279000 Caloriesc. 271000 Caloriesd. 1167 Caloriese. 271 Calories
Calculate the enthalpy change in oxidizing this mixture in air if the reactants are at 298 K and the products are at 1200 K.
A mixture of table salt and ice is used to chill the contents of hand-operated ice-cream makers. What is the melting point of a mixture of 2.00 lb of NaCl and 12.00 pounds of ice if exactly half of the ice melts?
what is the order of increasing steric hindrance within these reactions and what is the reason for that order in terms of calculated energies, distance, and structures.
What is the difference between a hypothesis and a theory? a hypothesis is a proposal that has been tested extensively, whereas a theory is an initialy stated proposal a hypothesis is a conclusion made after a theory was tested words hypothesis
Draw all of the carbocation resonance structures that result when the tosylate ion leaves from 1-(tosylmethyl)cyclohexa-1,3-diene. Input the radical lone electrons.
Draw the product formed when Reaction of [(1R)-1-methoxypropyl]benzene undergoes substitution with the hydroxide ion
particular amino acid in an ion exchange chromatography column. What is the peak width after the amino acid has migrated 100 cm?
A sample of a new compound is burned in an excess of air to produced CO2 and H2O. If 0.468 g of the sample produce 0.458 g of CO2 and 0.094 g of H2O and the molar mass is about 230, what is the likely molecular formula of this compound?
What is the molarity of a calcium hydroxide solution if a 25.0 mL sample is exaclty neutralized by 42.5 mL of 0.0750 M nitric acid?
Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride, CF4 via the reaction
calculate how much more quickly 235 ^UF6 effuses than 238 ^UF6. give the answers as the ration of rates of 235 ^UF6 to 238 ^UF6 to four decimal places.
Be sure to fully explain how your experiment and the resulting data would allow you to determine the wavelength of maximum absorbance for the FeSCN2+ complex.
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