When elements with four electrons in the outermost shell react chemically, they

A. Always gain 4 electrons

B. Always lose 4 electrons

C. May lose, gain, or share 4 electrons

D. May lose or gain 4 electrons

What is the greatest degree of ionic character found in a sulfur bond

A student performing this experiment weights out 0.6500 grams of an antacid tablet. It is was determined that this tablet contained 0.4655 grams of C a CO3. What is the percent C a CO3 of this tablet? Type your answers without units.

Which list of elements contains only metals? a. helium, carbon, gold b. sodium, chromium, copper c. iodine, iron, nickel d. phosphorus, nitrogen, oxygen

At a certain temperature this reaction follows second-order kinetics with a rate constant of 14.1 M-1s-1 : 2SO3g - -> 2SO2g + O2g Suppose a vessel contains SO3 at a concentration of 1.44M. Calculate the concentration of SO3 in the vessel 0.

Which scientist was a great influence to others when he developed the heliocentric model about how the planets orbited the Sun?

Why do you need a balanced equation for stoichiometry?

The density of gold is 19.3 g/cm3. What is the volume of a 13 g gold nugget?

Glucose, C6H12O6, C6H12O6, is used as an energy source by the human body. The overall reaction in the body is described by the equation C6H12O6 (aq) 6O2 (g) ⟶6CO2 (g) 6H2O (l) C6H12O6 (aq) 6O2 (g) ⟶6CO2 (g) 6H2O (l) Calculate the number of grams of

Which two bases pair with each other?

What is the main cause of increased erosion