25. A one-pipe system is used to

a. quickly heat large office buildings

b. deliver high volumes of heated water

c. deliver heat to multiple buildings

d. connect the boiler with one main pipe

Calculate the food energy (joules/ g. of one of your food samples. one chemistry calorie is equal to 4.186 joules. convert the energy you calculated to kilojoules (1 kj = 1000 j). show and label your work for your calculations.

The density of an unknown gas at 98°C and 740 mmHg is 2.50 g/L. What is the molar mass of the gas with work showed?

What other aspects of a catalyzed reaction are different from the uncatalyzed reaction? select all that apply.

The Spirit of America Goodyear blimp has a volume of 2.027*105 ft3. When the blimp is in operation, it is filled with helium gas. If the density of helium at room temperature is 0.179 g/L, calculate the mass of helium in the blimp.

When an atom is chemically stable how many electrons are in its outer energy later?

List one reason as to why historical growth has slowed in recent years.

Name some specific liquids that you think might contain less than 80 percent water.

The ostwald process is used commercially to produce nitric acid, which is, in turn, used in many modern chemical processes. in the first step of the ostwald process, ammonia is reacted with oxygen gas to produce nitric oxide and water.

Convert 6.766 * 10 ms into s

How much CO2 is produced from 10g of CH4?