What is the molar concentration of fe2+ ion in an aqueous solution if 37.50 ml of 0.118 m kbro3 is required for complete reaction with 11.00 ml of the fe2+ solution? the net ionic equation is: 6fe2+(aq)+bro3−(aq)+6h+(aq)→6fe3+(a q)+br−(aq)+3h2o(l).

How many grams of aluminum will there be in 98g of al2o3?

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

Which of the following nuclei would be the least stable a 2 protons, 2 neutrons b 1 proton 1 neutron c 1 proton 3 neutrons d 1 proton 2 neutrons