Select the answers below that represent the ionic compounds in this list: na2so4 h2so4 ch3-ch3 n2o4 cacl2 ca3 (po4) 2

In the reaction MgCl2 + 2KOH Mg (OH) 2 + 2KCI, if 3 moles MgCh are added to 4 moles KOH, what determines how much Mg (OH) 2 is made?

Identify ammonia. a. strong electrolyte, strong base b. strong electrolyte, weak base c. weak electrolyte, strong base d. weak electrolyte, weak base e. nonelectrolyte answer:

In the "Mass in Motion" lab, a ball was rolled down a ramp to see how far it moved a cup. What did this experiment demonstrate? An object's momentum decreases with velocity. An object's momentum increases with velocity.

Review It! All of the following are correct, except: a; A galaxy contains a vast number of stars, their planetary systems, and a variety of other celestial objects. b; Stars orbit the many planets of a galaxy.

What makes a molecule polar? O A. Nonpolar covalent bonds within the molecule that cancel out O B. Ionic bonds between atoms of different electronegativities O C. Bonds between atoms of the same electronegativity O D.

Change of state may occur when?

During the combustion of 2.00 g of coal, the temperature of 500 g of water inside the calorimeter increased from 25.0°c to 43.7°c. the specific heat of water is 4.18 j/g·°c. how much heat did the reaction generate?

Catalysts are substances that increase the rate of reaction but can be recovered unchanged at the end of the reaction. Catalysts can be classified as either homogeneous (same state as reactants) or heterogeneous (different state than reactants).

How many molecules are there in 79g of Fe2O3?

Which of the following elements is an alkall metal?