Silicon has three naturally occurring isotopes: Si-28 (mass = 28.0 amu); Si-29 (mass = 29.0 amu), and Si-30 (mass = 30.0 amu). If the average atomic mass of silicon is 29.1 amu, which isotope is the most abundant?

The correct conversion factor to calculate the number of Liters in 5,687 ml is:

A rock rolling down a hill is an example of

A slice of pizza contains 29 g of carbohydrate, 13 g of protein and an unknown amount of fat. If the pizza contains 280 kcal, how many grams of fat are present? (The caloric values for foods are 4.0 kcal/g for carbohydrate, 4.0 kcal/g for protein, and 9.0 kcal/g for fat.)

Bromine has a freezing point of -7˚C and a boiling point of 60˚C.  Indicate the state or change of state occurring at -7˚C.

What is the IUPAC name of compound #6 in the supplemental file?

Staphylococcus aureus is spread via

The Ka of H2CO3 is 4.3 × 10-7. What is the pH of a buffer with 0.10 M H2CO3 and 0.010 M NaHCO3 (HCO3 -)?             Equation: H2CO3  +   H2O H3O+  +  HCO3 –

MRSA is staphylococcus aureus that is resistant to which antibiotic?

For the equation below the correct conjugate acid-base pair is H2CO3  +   H2O H3O+  +  HCO3 –