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When 85.0 g of CH4 are mixed with 160.g of O2, the limiting reactant is CH4 (g) + 2 O2 (g) –> CO2 (g) + 2 H2O (g)

Which element has the electron configuration 1s22s22p63s23p2?

Ionization energy is 

The number of electrons in the outer energy level (ie., number of valence electrons) of a neutral atom of boron (atomic number 5) is:

EXTRA CREDIT The following electron configurations contain a coded word. [Xe] 6s² 1s²2s²2p63s1 [Ne] 3s1 1s²2s²2p63s23p4 The coded word is (use all lowercase letters)

In the measured number 22.8732, the seven is in the

The correct answer for 9.75 x 200 is

How many calories are required to heat 10 g of water from 10˚C to 85 ˚C?

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.)

A rock rolling down a hill is an example of