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The diameter of a penny is 19mm. the diameter of a Cu atom is 2.6A. How many Cu atoms side by side in a straight line could fit across the diameter of a penny?
water vapor and nitrogen dioxide gas no2 are combined to manufacture ammonia. a byproduct of this reaction is oxygen
A compressed-air tank carried by scuba divers has a volume of 6.80L and a pressure of 120atm at 20 degrees celsius. What is the volume of air in the tank at 0 degrees celsius and 1.00atm pressure (STP)
Balance the following equation in basic solution. indicate which reactant becomes oxidized during the reaction, which reactant becomes reduced
An important reaction in the formation of photochemical smog is the photodissociation of NO2: NO2 + hv >>> NO(g) + O(g) The maximum wavelength of light that can cause this reaction
Which of these ions best represents the conjugate acid in a "phosphate" buffer at physiological pH? Explain. H2PO4^-, HPO4^2-, PO4^3-
Consider the folowing mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution.
When heating the acetone in a water bath, why must there be a hole in the foil cap
comment on the situation in this case. is the positive charge of hydronium ion on the least electronegativity atom? is this reasonable? is there a choice?
Name a metal that could be used in a future experiment to extract the copper from the copper (II) nitrate solution
Chlorine can be generated by heating together magnesium hypochlorite and hydrochloric acid. Magnesium chloride and water are also formed.
acetone ch32co. has a density 0.7857 gcm3.determine the mass of 28.56 ml of acetone and express your answer in grams?
A 4.50-g sample is burned, and 2.70 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture?
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