From Questions to Solutions

During the combustion of a peanut that weighed 0.341 g, the temperature of the 100 mL of water in the calorimeter rose from 23.4ºC to 37.9ºC. The peanut didn't burn

Determine the number of moles in a 38.2 g sample of sodium chloride (NaCl).

What is the number of infants born between 20 and 36.6 weeks of gestation, regardless of outcome?

If Pat the cat was traveling at a speed of 3.5 m/s, and it took her 38.2 seconds to run the entire length of the street she lives on, how

You have 35 yards of ribbon for your gift boxes. Each box gets the same amount of ribbon. How much ribbon will each of your 30 gift boxes get?

Which one of the following is the highest temperature? A. The boiling point of water B. 220 degrees F C. 373 K D. 100 degrees C E. All of the

Select the correct answer. Points [tex] A [/tex] and [tex] B [/tex] lie on a circle centered at point [tex] O [/tex]. If [tex] OA = 5 [/tex] and [tex]\frac{\text{length

Cut a 2-yard spool into 5 equal lengths of ribbon. How long is each piece of ribbon?

What is the pressure in a 5.00 L tank with 4.40 moles of oxygen at 39.3 °C?

How many grams of glucose, dissolved in 350.0 g of water, are needed to make a 1.55 m solution? 1) 279 2) 45.5 3) 145 4) 97.7

1000 mm (1 meter) equals: A. 25.4 inches B. 37 inches C. 36.6 inches D. 39.3 inches

What is the entropy change when 1.55 moles of [tex]\text{CCl}_2\text{F}_2[/tex] vaporize at 25°C? (Given entropy = 17.2 kJ/(mol*K) at 25°C) a. 26.7 kJ/mol b. 17.2 kJ/mol c. 38.2 kJ/mol d.

The relationship between degrees Fahrenheit and degrees Celsius is linear. The two important reference points for this relationship are: - Water freezing at 0 degrees Celsius, which is 32 degrees

1. A 99.8 mL sample of a solution that is 12.0% KI by mass (density: 1.093 g/mL) is added to 96.7 mL of another solution that is 14.0% Pb(NO3)2 by

The specific heat of a certain type of metal is 0.128 J/(g°C). What is the final temperature if 305 J of heat is added to 39.3 g of this metal,