What are some chemacial changes in your school?

Which of the following statements is true regarding a covalent bond in CO? Valence electrons are transferred to the oxygen atom. The bond length is less than the sum of the two atomic radii. Bonding electrons are stationary in the CO molecule.

One atmosphere (atm) is equal to which of the following? A. 2 kpa B. 760 pascals C. 7.6 mm of mercury D. 760 mm of mercury

Which type of chemical reaction occurs in Ca+CI2 CaCI2

The following reaction shows calcium chloride reacting with silver nitrate CaCl2 + AgNO3 - > AgCl + Ca (NO3) 2 How many grams of AgCl are produced from 30.0 grams of CaCl2? Ca = 40.078, Cl = 35.453, O = 15.999, Ag = 107.868, N = 14.007 A. 19.0 B. 38.

Explain, in terms of particle arrangement, why a sample of solid NaCl has less entropy than a sample of aqueous NaCl.

Suppose you have made the following hypothesis: Sharks are most common near coral reefs, because there are more fish there to eat. Suppose you observed 10 sharks on a coral reef in the Caribbean, and 15 sharks in the open ocean 50 miles away.

The total pressure of a mixture of oxygen and hydrogen is1.00atm. The mixture is ignited and the water is removed. Theremaining gas is pure hydrogen and excerts a pressure of. 4atm whenmeasured at the same values of T and V as the original mixture.

Two ligands, a and b, both form complexes with a particular metal ion. when the metal ion complexes with ligand a, the resulting solution is red. when the metal ion complexes with ligand b, the resulting solution is yellow.

Distinguish between the structures of arteries, capillaries, and venies. what is the function of each.

How much water should be added to 30 l of a 40 acid solution to reduce it to a 30 solution?