How many gallons of propane in a 20-pound tank?

If an element has 12 protons and 17 neutrons, how many electrons must it have?

Determine the theoretical yield of 9-fluorenol in grams

What is the half-life of a 3 g sample of radioisotope that decayed to 0.75 g in 30 days?

How do I record the mass of one mole of a substance? (for example, aluminum)

A 1.0 g sample of food reacts with oxygen in a calorimeter containing containing 500 g of water. The temperature rises 10c what is the energy content of the food? A. 20.92 Calories/g B. 18.25 calories/g C. 5 calories/g D. 50 calories/g

Which type of luster gives the mineral the appearance of metal?

Anything that contains only one kind of material?

One mole of propane (c3h8) gas reacts with five moles of oxygen (o2) gas to produce three moles of carbon dioxide gas (co2) and four moles of water gas (h2o).

How many nitrogen molecules are in 1.2 moles of N2?

Which best describes how sediment forms?