From Questions to Solutions

A 100.0-g sample of a compound is made up of 35.9 g of aluminum and 64.1 g of sulfur. The empirical formula of the compound is: A. AlS B. Al₂S₃

Alexis has two ribbons. One of the ribbons is 40 cm long, and the other is 70 m long. She wants to cut the ribbons into equal pieces of the

If you have 36.6 mL of concentrated sulfuric acid and it is diluted to make up 1.5 L of 0.25 M sulfuric acid, what was the molarity of the concentrated

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]

The vapor pressures of pure carbon disulfide and carbon tetrachloride are 360 torr and 99.8 torr, respectively, at 296 K. What is the vapor pressure of a solution containing 50.0

Which answers are elements of the solution set of the inequality? Check all answers that apply. \[ x - 46 > -79 \] A. -39 B. -45 C. -33 D.

If Tom Dooley found a zero correlation between people's foot size and procrastination, this would mean that: A) Foot size and procrastination are positively correlated. B) Foot size and procrastination

If the original volume of gas in your thermometer is 30.0 mL at 0 °C, what is the temperature of the hot water in Celsius if the volume of gas

Refer to the data set of body temperatures in degrees Fahrenheit given in the accompanying table and use software or a calculator to find the mean and median. Do the

A 100.2 mL sample of 1.00 M NaOH is mixed with 50.1 mL of 1.00 M [tex]H_2SO_4[/tex] in a large Styrofoam coffee cup; the cup is fitted with a lid

Determine the molarity of a solution formed by dissolving 97.7 g of LiBr in enough water to yield 750.0 mL of solution. A. 2.30 M B. 1.18 M C. 0.768

Let [tex]f(x) = 7x - 4[/tex]. What is [tex]f(6)[/tex]? A. 38 B. 48 C. 42 D. 46

An elderly patient with chronic obstructive pulmonary disease (COPD) and pneumonia was admitted to the hospital. The patient reports a 40-year history of smoking. He is able to ambulate independently

Dawn and Emily each had the same length of ribbon. Both girls used their ribbon.

In an area of the Great Plains, records were kept on the relationship between the rainfall (in inches) and the yield of wheat (bushels per acre). Calculate the linear correlation