From Questions to Solutions

A balloon with a volume of 38.2 L at 91 psi is allowed to expand into a larger container with a total volume of 77.4 L. What is the pressure

If 14.2 g of Al(NO3)3 is dissolved in 655 g of water, what is the boiling point of the solution? Assume 100% dissociation. Given that [tex]k_b \text{(H}_2\text{O)} = 0.52 \,

A sealed gas cylinder on the back of an open truck experiences a temperature change from -20.5 ˚C to 39.3 ˚C as it is driven from North Dakota to Arizona.

A 1408.0 kg roller coaster car sits atop a 99.8 m hill. How much potential energy does it have? Round to 1 decimal place, include units.

The temperature of a 12.58 g sample of calcium carbonate increases from 23.6 °C to 38.2 °C. If the specific heat of calcium carbonate is 0.82 J/g-K, how many joules

What percent of 64 is 39.4? Round your answer to the nearest hundredth.

Barbara is converting [tex]$78^{\circ} F$[/tex] to degrees Celsius. First, she subtracts 32 from 78. What is the next step? A. Multiply 46 by [tex]$\frac{5}{9}$[/tex] B. Multiply 46 by [tex]$\frac{9}{5}$[/tex] C.

A man has 220 cigarettes and smokes \( k \) of them each day. How many will he have left a week later? A. \( 220 + k \) B.

A triangle has two sides of 23 and 17. Select all the values listed that could be the measure of its third side. A. 6 B. 17 C. 20 D.

The exponential function [tex] f [/tex] is represented by the table: [tex] \begin{array}{cccccc} x & -2 & -1 & 0 & 1 & 2 \\ f(x) & -46 & -22

Water boils at 100 degrees Celsius or 212 degrees Fahrenheit. Water freezes at 0 degrees Celsius or 32 degrees Fahrenheit. If the weather forecaster says it will be 25 degrees

39.4 x 1.7 Calculate the answer.

A random sample of size 625 is drawn from a large population. The population standard deviation is 8.8. The sample mean is 97.6. Find a [tex]$90\%$[/tex] confidence interval for the

**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

Barbara is converting [tex]78^{\circ} F[/tex] to degrees Celsius. First, she subtracts 32 from 78. What is the next step? A. Multiply 46 by [tex]\frac{5}{9}[/tex] B. Multiply 46 by [tex]\frac{9}{5}[/tex] C.