If 100g of Au-198 decays to 6.25g in 10.8 days, what is the Half-Life of Au-198.

Use Ae = Ao (.5) ^ t / t1/2

whAt is an example of a chemical change is: Boiling water, Melting butter, Spreading cream cheese, Toasting bread?

The atomic number of an element is equal to the number of protons in each atom of the element. All helium atoms have 2 protons. What is the atomic number of helium?

Which trait will an organism that receives one dominant gene and one recessive gene most likely have?

Which is the best term to use when describing the energy of position? chemical kinetic potential electromagnetic

vanadium has an atomic mass of 50.9415 amu. it has two common isotopes. one isotopes has a mass of 50.9440 amu and a relative abundance of 99.75%.

Write a formulae equation to represent the combustion of carbon to form carbon dioxide and the thermal decomposition of magnesium carbonate

A5.00 liter ballon of gas at 25 degree Celsius is cool to 0 degrees Celsius. What is the volume (liters) of the ballon?

How much thermal energy (q) is required to heat 15.2 g of a metal (specific heat = 0.397 J/G) from 21.0 degrees C to 40.3 degree C

Two gas jars are connected to each other, but they are separated by a closed valve. One gas jar contains oxygen, and the other is empty. What will happen when the valve is opened?

4. Calculate the final concentration if water is added to 1.5 L of a 12 M NaOH solution to make 3.0 L of a diluted NaOH solution. Your answer