the reaction 2n2o5(g) → 2n2o4(g) + o2(g) obeys the rate law rate k[n2o5], in which the specific rate constant is 0.00840 s-1 at a certain temperature. a. if 2.50 moles of n2o5 were placed in a 5.00-liter container at that temperature, how many moles of n2o5 would remain after 1.00 minute? b. how long would it take for 90% of the original n2o5 to react?

The recommended daily calcium intake for a 20-year-old is 1,000 milligrams (mg). one cup of milk contains 299 mg of calcium and one cup of juice contains 261 mg of calcium. which of the following inequalities represents the possible number of cups of milk m and cups of juice j a 20-year-old could drink in a day to meet or exceed the recommended daily calcium intake from these drinks alone?

The chart below matches messenger rna codons with amino acids. a dna strand has the sequence of bases, aat. according to the chart, the corresponding messenger rna codes for which amino acid?

Susie ran a race. she ran 55 miles an hour, and the race took her tt hours to complete.