From Questions to Solutions

You are trying to compare the Fahrenheit and Celsius scales. You have two examples: - Temperature A is 50 degrees Celsius and 122 degrees Fahrenheit. - Temperature B is 100

The vapor pressure of ethanol is [tex]1.00 \times 10^2[/tex] mmHg at [tex]34.90^\circ C[/tex]. What is its vapor pressure at [tex]60.21^\circ C[/tex]? (ΔHvap for ethanol is 39.3 kJ/mol.)

You are given a block of metal with a known mass of 110.2 grams. You measure its mass three times and obtain the following readings: 100.2 g, 100.1 g, 100.3

1. Evaluate: (i) \((1.2)^2\) (ii) \((0.7)^2\) (iii) \((0.04)^2\) (iv) \((0.11)^2\) 2. Evaluate: (i) \((0.3)^3\) (ii) \((0.05)^3\) (iii) \((1.5)^3\) 3. A bus can cover 62.5 km in one hour. How much

Find the mean of this data: 35, 30, 30, 27, 33, 52, 51. If necessary, round to the nearest tenth. A. 36.9 B. 30 C. 37.9

Etta buys some ribbon and cuts it into seven pieces that are the same length. Each piece is 9 inches long. How long was the ribbon that Etta bought?

Seven-eighths of a sample of hydrogen-3 will have become a stable isotope after 36.9 years. What is the half-life of hydrogen-3? A. 12.3 years B. 18.5 years C. 32.3 years

An ethylene glycol solution contains 21.4 g of ethylene glycol (\(C_2H_6O_2\)) in 97.6 mL of water. Required: a. Determine the freezing point of the solution. Express your answer in degrees

If you walk 1.2 km north and then 1.6 km east, what are the magnitude and direction of your resultant displacement? A. magnitude: 1.1 km; direction: 53.1 degrees east of

Suppose that a person's heart rate, [tex]\( x \)[/tex] minutes after vigorous exercise has stopped, can be modeled by the function: [tex]\[ f(x) = \frac{4}{5}(x-10)^2 + 71 \][/tex] The output

A manager at SUBWAY wants to find the total cost of: - 24.8 pounds of sliced turkey at $3.89 a pound - 38.2 pounds of provolone cheese at $2.05 a

During a tensile test with an initial gauge length of 100.0 mm and a cross-sectional area of 150 mm², the following force and gauge length data were recorded: 1. 17,

A student filled a graduated cylinder with water and read the meniscus at 25.8 mL. The student then dropped a solid material into the graduated cylinder, and the water level

Phosphorus can be prepared from [tex]Ca_3(PO_4)_2[/tex] via the overall reaction: \[ 2Ca_3(PO_4)_2 + 6SiO_2 + 10C \rightarrow 6CaSiO_3 + 10CO + P_4 \] Calculate the minimum mass of [tex]Ca_3(PO_4)_2[/tex] required

Suppose California's population is 36.6 million people, and its population is expected to grow by 4% annually. How long will it take for the population to double? Round your answer