If reactants A and B contain a total of 248 kJ of chemical energy, and products C and D contain a total of 841 kJ of chemical energy, is the reaction endothermic or exothermic?

What evidence is there to suggest that the earth is made up of tetonic plates

Describe the relationship among tempreture, heat, and thermal energy

If the rate-determining step limits the speed of a reaction, which statement is correct? Even if one or more fast steps occur in a reaction, the overall reaction cannot proceed any faster than the slowest step.

What is the first quantum number of a 1s2 electron in phosphorus, 1s22s22p63s23p3?

Calculate the pH of a solution that has a [OH-] of 2.6 * 10^-6 M. A. 8.4 B. 6.5 C. 7.7 D. 6.29

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.

Which of these is not a biomass source? A) Sun B) Manure C) Wood chips D) Paper