Is calcium disodium ionic or covalent?

Mass defect for the isotope thorium-234 = 1.85864 amu. How many kilograms does the mass defect represent? A) 1.85864 * 10-10 kg B) 1.12 * 10 - 22 kg C) 3.09 * 10-27 kg D) 1.66 x 10-27 kg

A gas occupies 1.56 L at 1.00 atm. what will the volume be if the pressure becomes 3.00 atm

Now that you have the density of 0.786 kg/dL, use this value directly to calculate the volume in dL of 3.14 kg

Which of the following is a property of a base? A taste sour (B slippery feel (c produces hydrogen gas when reacting with a metal D produces carbon dioxide when reacting with carbonates

How many grams of water would there be in 100.0g of hydrate? How many moles? Mass of the hydrate 0.946g Mass of the anhydrous CuSO4 0.614gCuSO4 Mass of water driven off? 0.347g H2O The percent water in the hydrate 36.0%

In most food webs there are many producers, fewer herbivores, and even fewer carnivores. Which statement best explains why there are always fewer carnivores than producers in a food web? A. There is not enough space to illustrate them. B.

Which of Deeandra observation is scientifically testable

A round, three dimensional object is a?

The energy needed to start a chemical reaction is called

How does the motion of particles in the sun's plasma compare to the motion of particles in a solid? particles in both the plasma and a solid move around to fill available space.