What is the definition of physical and chemical properties of matter?

For the nitrogen fixation reaction, 3h2 (g) + n2 (g) 2nh3 (g), kc = 6.0 * 10-2 at 500°c. if 0.250 m h2 and 0.050 m nh3 are present at equilibrium, what is the equilibrium concentration of n2? a. 3.3 m b. 2.7 m c. 0.20 m d. 0.083 m e. 0.058 m

Copper, silver, and gold are transition metals that fall into the same group on the periodic table. From the following list, identify those metals that cannot be oxidized by cations of all three of these metals from group 11.

Petroleum is used to make synthetic plastics and numerous petrochemicals. True or false

Which term refuses to the structure that forms the surface of a cell, separating it's contents from the outside world a. Golgi apparatus b. Cell membrane c. Cytoskeleton d. Plasmid

A piece of an unknown substance weighing 124.0 grams is heated in boiling water to 100.0oc. when the substance is placed in a calorimeter containing 300.0 grams of water, the temperature of the water increased from 20.0oc to 26.0oc.

How is the salt formed in a neutralization reaction written in a chemical reaction?

When red litmus paper is added to limewater, then what will be the change in litmus paper? Give reason. Write the chemical formula of limewater also.

Explain why the lattice energy of CaSe is approximately 4 times as large as that of KBr. Check all that apply. Check all that apply.

A 1.0 g sample of food reacts with oxygen in a calorimeter containing 500 g of water. The temperature rises 10°C. What is the energy content of the food?

Looking at the diagram showing hydrochloric acid being added to water. Which statement best explains what is taking place