How are rare earth elements like neodymiun important to our technological world?

An atomic nucleus must contain at least one neutron or else the force of attraction of the electron (s) will collapse the atom. True/false

Calcium oxide anion meatl or metal

At ph 1.8, dichloroacetic acid is 8% dissociated. what is the pka for dichloroacetic acid?

The vapor pressure of a solution containing 53.6 g glycerin (c3h8o3) in 133.7 g ethanol (c2h5oh) is 113 torr at 40°c. calculate the vapor pressure of pure ethanol at 40°c assuming that glycerin is a nonvolatile, nonelectrolyte solute in ethanol.

A balloon containing 0.500 mol Ar at 0.00°C and 65.0 kPa pressure is expanded by adding more argon. How many moles of argon are added to bring the sample to a final volume of 60.0 L at 30.0°C and 45.0 kPa? What is the original volume of the gas?

Which of the following substances act as a catalyst in the body? A) carbohydrates B) nuclear Acids C) Lipids D) enzymes

How many carbons are in a molecule of hexane?

A balanced chemical equation is shown below C6H1206 + 602-6H20 + 6CO2 Which of the following best describes the number of atoms for each element in the chemical equation? A.

A subtance speeds up a chemical reaction without being changed itself as known as

How are rare earth elements like neodymiun important to our technological world?