How much energy moves onto the next level, in an energy pyramid

Which of the following compounds are binary ionic compounds? a. KBr b. K3PO4 c. sodium nitrite, d. calcium sulfate

According to molecular orbital theory, all diatomic molecules with an even number of electrons will be diamagnetic. True or False?

Which of the following is not a polyatomic ion? A) NO3- B) CaCO3 C) C2H3O2- D) C6H5COO-

An unknown substance with a mass of 100 grams absorbs 1000 J while undergoing a temperature increase of 15 C. what is the specific heat capacity of the substance? A. 0.7 J/g*C B. 7.0 J / g*C C. 70 J / g*C D. 700 J / g*C

For the following compound, determine each element and if the element is a metal or nonmetal. Also determine if the compound has an ionic, covalent, or metallic bond: NaCl SO2 CaO HF NO2 H2O

A chemist determined by measurements that 0.050 moles of aluminum participated in a chemical reaction. Calculate the mass of aluminum that participated in the chemical reaction. Be sure your answer has the correct number of significant digits.

In 1901, Thomas Edison invented the nickel-iron battery. The following reaction takes place in the battery. Fe (s) + 2 NiO (OH) (s) + 2 H2O (l) Fe (OH) 2 (s) + 2 Ni (OH) 2 (aq) How many mole of Fe (OH) 2, is produced when 5.35 mol Fe and 7.

As you move from left to right across the periodic table, the atomic numbers increase decrease stay the same are random

Use the octet rule to predict the formula of the compound that would form between fluorine and iodine, if the molecule contains only one fluorine atom and only single bonds are formed.

64.0 grams of Sulfur Dioxide absorbed 5.00 kJ of heat and immediately evaporated. With this information, calculate its molar enthalpy of vaporization in units kJ/mol.