N-14 = 95%, N-15 = 3%, N-16 = 2%

C-12 = 98%, C-14 = 2%

Which of these is outside of the solar system?

What impact would a sudden increase in the price of wood have on producers and consumer? How might each group respond to the change in price?

Aluminium and phosphorus are close to one another in the Periodic Table but the P3 - ion is much larger than the Al3 + ion. Explain the reason for this change in size.

How many isomers does hexane (C6H14) have? a. four b. five c. six d. seven

Write a balanced chemical equation to show the reaction of naoh with the monoprotic acid hcl.

How do you balance __Mg + __HCl - - > __MgCl2 + ___ H2

How many grams of methane, CH4 are produced from the complete reaction of 5.15 moles of carbon monoxide, CO

If you change the state of something, say, liquid to solid, is it a physical or chemical change?

What type of calorimeter would be best to use if you wanted to measure the heat that is released when gasoline is burned?

Tina has a sample of gaseous water at a temperature of 400 C and a pressure of 4 atm. If Tina increases the pressure to 200 atm, will the gaseous water liquefy? Why or why not?