The half life of iodine-125 is 60 days. If there was 4000 g of Iodine-125 to start, how much would be left after 360 days?

Will Na2S and CuSO4 combine to form a precipitate

Examine the following set of ionization energy values for a certain element. How many valence electrons does an atom of the neutral element possess?

Calculate the vapor pressure of water above a solution prepared by dissolving 29.0 g of glycerin (C3H8O3) in 120 g of water at 343 K.

What is the Molar mass of Na3P

A car with a mass of 1,100 kg is moving with a velocity of 30 m/s due east. What is the moment?

For the equilibrium reaction 2NH3 (g) + 22 kJ ↔ N2 (g) + 3H2 (g), which of the following changes would result in the formation of more N2 and H2 at equilibrium?

When a chemical reaction occurs, atoms rearrange to form new compounds, but no new atoms are created nor are any destroyed. this concept is called conservation of mass.

The elements on the Periodic Table are arranged in order of increasing (1) atomic mass (2) atomic number (3) first ionization energy (4) selected oxidation state

How many atoms in 6.2 moles of aluminum

Write two balanced equations 1. Dissolving of Solid Sodium Hydroxide in Water 2. The reaction of Sodium Hydroxide Solution with Hydrochloric Acid