This iron oxide mineral commonly has a reddish color and consistently has red streaks. What mineral is it?

Which equation represents the oxidation half-reaction for this redox reaction? Ca + Al (NO3) 3 → Al + Ca (NO3) 2

Arrange the bonds in order based on bond length. Start with the longest bond, and end with the shortest bond. C≡N bond energy = 887 kJ/mol C=N bond energy = 615 kJ/mol C-N bond energy = 305 kJ/mo

In which substance does sulfur have an oxidation state of + 4

Sterling silver is a solid solution of silver and copper. if a piece of a sterling silver necklace has a mass of 105.0g and a volume of 10.12 ml, calculate the mass percent of copper in the piece of necklace.

A neutral isotope has 45 neutrons and 36 electrons. Identify the element symbol of this isotope and determine the mass number and number of protons. element symbol: mass number: number of protons:

The mass of 126c is exactly 12 u. what is the total binding energy of this nucleus?

A reaction is in equilibrium as shown: a + b c + d. calculate the equilibrium constant if the final concentrations stabilize at: a = 9.60 m b = 10.0 m c = 4.00 m d = 4.00 m 0.167 0.408 2.45 5.99

When 10 liters of a gas at 1 atm is compressed to 3 liters at constant temperature, what property of the gas changes?

What happens to the particles of a substance when thermal energy is added to the substance? A.) it's particles do not vibrate at all. B.) it's particles move faster. C.) it's particles move closer together. D.). It's particles move slower.

Suppose that you drop three objects into a glass of water: a piece of styrofoam, a piece of oak, and a gold ring. Which float, and which sink? density of styrofoam: 0.005 density of gold ring: 19.32 density of oak: 0.70