From Questions to Solutions

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

Sara had a 70 cm long ribbon. She joined another piece of ribbon to make it 2 m 40 cm. What is the length of the other piece of ribbon?

Let \( X \) represent the full height of a certain species of tree. Assume that \( X \) has a normal probability distribution with \(\mu = 151.5 \, \text{ft}\)

Identify which pair of numbers represents the boiling point of water in degrees Fahrenheit and the boiling point of water in degrees Celsius. A. 212 degrees Fahrenheit and 100 degrees

A metal with a mass of 52.100 grams is added to 30.0 mL of water. The water level rises to a volume of 36.6 mL. What is the density of

In logistic regression, the dependent variable (DV) has to be numeric (e.g., 23.5, 4.76, 100.2, etc.). True or False? A. True B. False C. Not applicable D. None of the

A 220 2 resistor, a 0.900 H inductor, and a 6.00 F capacitor are connected in series across a voltage source that has voltage amplitude 32.0 V and an angular

Marcus said that 35.853 rounds to 35.9 to the nearest tenth. Laci said that 35.853 rounds to 35.85 to the nearest hundredth. Who is correct? A. Marcus only B. Laci

Given the following equation: \[ 2\text{Na} + \text{Cl}_2 \rightarrow 2\text{NaCl} \] How much Na would be required to produce 100. g of NaCl? A. 100. g B. 50.0 g C.

Choose all the answers that apply. Charlie has a normal karyotype. He has: A. One X chromosome B. One Y chromosome C. 23 chromosome pairs D. 46 chromosomes E. Two

Alexander measures a stack of textbooks to be 38.2 cm tall. If there are 10 textbooks in the stack, how tall is each textbook?

Three ribbons, A, B, and C, are given. One third of ribbon A is the same length as ribbon B.

A molar duck is 56 to 65 cm long. If the duck traveled 97.8 miles at top speed in one and a half hours, how far did it travel in

A solution is composed of 1.90 mol cyclohexane ([tex]P^{\circ}=97.6[/tex] torr) and 2.60 mol acetone ([tex]P^{\circ}=229[/tex] torr). What is the mole fraction of cyclohexane in the vapor? A. 0.578 B. 0.422

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. Add 273 to