From Questions to Solutions

**Problem 1:** Ammonium nitrite decomposes to give off nitrogen gas and liquid water. How many grams of ammonium nitrite must have reacted if 2.58 L of gas was collected over

In what year did the Kingston Trio win a Grammy Award in the Country Music category (Folk didn't exist as a category yet) for their hit song "Tom Dooley"? a)

An informational text has a list of references and three in-text citations: one each for Khan, Dooley, and Molina. Which of the following is most likely to be true? A.

In 2002, the total amount of electrical energy produced in the U.S. was 38.2 quads. How much of this electrical energy was produced by nuclear plants?

Yu, Nailah, and Elena each bought between 7 and 9 yards of ribbon. - Yu bought 3 pieces of ribbon. - Nailah bought 5 pieces of ribbon. - Elena bought

Which expression is equivalent to [tex]30\left(\frac{1}{2} x-2\right)+40\left(\frac{3}{4} y-4\right)[/tex]? A. [tex]15x - 30y - 220[/tex] B. [tex]15x + 30y - 64[/tex] C. [tex]45xy - 220[/tex] D. [tex]15x + 30y - 220[/tex]

One percent of a measured amount of Ar(g) escapes through a tiny hole in 77.3 seconds. One percent of the same amount of an unknown gas escapes under the same

You have 30 boxes of A1 ball bearings in your plant. You immediately had them weighed. The weights of the boxes are: 40.1, 41.1, 39.5, 40.1, 39.1, 41.2, 37.6, 39.1,

A parachutist of mass 39.4 kg jumps out of an airplane at a height of 1340 m and lands on the ground with a speed of 5.78 m/s. The acceleration

The gas in a sealed container has an absolute pressure of 125.4 kilopascals. If the air around the container is at a pressure of 99.8 kilopascals, what is the gauge

One particular cone of dry sand is 33 feet tall with a base diameter of 97.8 feet. To the nearest tenth of a degree, what is the angle of repose

A sample of 30 engineering graduates had the following starting salaries (in thousands of euros): 35.2, 36.7, 36.1, 35.0, 36.4, 36.7, 36.6, 37.9, 36.4, 37.0, 36.8, 34.9, 37.2, 36.2, 35.8,

Which expression is equivalent to [tex]$30\left(\frac{1}{2} x-2\right)+40\left(\frac{3}{4} y-4\right)$[/tex]? A. [tex]$45xy - 220$[/tex] B. [tex]$15x - 30y - 220$[/tex] C. [tex]$15x + 30y - 220$[/tex] D. [tex]$15x + 30y - 64$[/tex]

Point M is between points N and O on line segment [tex]NO[/tex]. Find the length of [tex]NM[/tex] if [tex]MO = 12.3[/tex] and [tex]NO = 26.9[/tex]. A. 11.6 B. 14.6 C.

18 grams of ice is converted into water at 0°C and 1 atm. The entropy of H₂ and H₂O is 38.2 J/mol·K and 60 J/mol·K, respectively. The enthalpy for this