What do Ionic compounds tend to be

What volume of benzene (C6H6, d = 0.88 g/mL, molar mass = 78.11 g/mol) is required to produce 1.5 x 103 kJ of heat according to the following reaction?2 C6H6 (l) + 15 O2 (g) → 12 CO2 (g) + 6 H2O (g) ΔH°rxn = - 6278 kJ

In an exothermic reaction, energy may be released to the surroundings in the form of? A. Heat B. light C. Thermal D. All of the above

Find the mass of an object with a volume of 5.2cm^3 and a density of 1.3g/cm^3

Multiple Choice Which of the following numbers are equivalent to 20%? Choose all that apply. A. 0.002 B. The fraction is 1 over 4. C. 0.20 D. one-fifth

Why is it important to classify things?

How did primo levi use his chemistry to survive Auschwitz?

Calculate the percent yield when 500 grams of carbon dioxide react with an excess of water to produce 640 grams of carbonic acid. CO2 + H2O - --> H2CO3

Which of the following is a possible equivalence that can be used in a conversion? A. ten to the negative second power hL over one L B. ten to the negative second power cL over one L C. ten to the first power L over one daL D.

Which process is a chemical change? burning a match boiling water melting ice breaking glass

What form of matter is "vapor"? a. a solid made of a substance that is usually liquid c. a gas made of a substance that is usually solid b. a liquid made of a substance that is usually gas d. a gas made of a substance that is usually liquid