Calcium (Ca) has an atomic number of 20. What is calcium's ground-state electron configuration? 1s21p61d101f2 1s21p62s22p63s23p2 1s22s22p63s23p64s2 1s22s22p63s23p63d2

Name the scientists who shared the Nobel Prize in Physics in 1903 and describe their contributions that were recognized by the award.

A 40.0 g of a solute is dissolved in 500. mL of a solvent to give a solution with a volume of 495 mL. The solvent has a density of 1.00 g/mL. Which statement about this solution is correct? A. The molarity is the same as the molality. B.

How many Joules of heat (enthalpy) is required to raise the temperature of 200 g of water from 20.0 0C to 50.0 0 C?

What is an example of sustainability

When 2-bromo-2-methylbutane is treated with a base, a mixture of 2-methyl-2-butene and 2-methyl-1-butene is produced. When potassium hydroxide is the base, 2-methyl-1-butene accounts for 45% of the product mixture.

When a tire is inflated with air is it a chemical or physical change?

Which isotope is used to date ancient artifacts such as fossils? carbon-12 carbon-14 uranium-238 oxygen-16

If 8.60 grams of methane gas (hint: remember the fuel for the bunsen burner) is in a 2.00 L container at 66oC, what is the pressure in the container?

Insulator in a sentence, with science.

Aqueous hydrobromic acid reacts with solid sodium hydroxide to produce aqueous sodium bromide and liquid water.