What is the mass of iron contained in 100g of an iron ore?

If 250.3 l of hydrogen gas (d = 0.0899 g/l) reacts with an excess of nitrogen gas, what mass of ammonia would be produced?

What is the electrical charge of an anion? A. positive B. negative C. no charge D. none of the above

How many moles is 2.80 x 10*24 atoms of silicone?

Describe what the greenhouse effect is and how it is caused on a molecular level.

How many Liters of fluorine are required to produce 290,8 g of Eobalt (II) fluoride?

Name 5 types of alloys

What is the 3 types of matters

A sunflower turns its head toward sunlight. What triggers this behavior in a sunflower? gravity phototropism presence of nutrients presence of water

Enter your answer in the provided box. A sample of an unknown gas effuses in 14.5 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.42 min. What is the molar mass of the unknown gas

What volume will 0.710 moles of nitrogen gas occupy at STP?