2H2 + O2à2H2O

How many water molecules are created when 32 grams of oxygen react completely with 4 grams of hydrogen?

A. 2

B. 20

C. 6.02 * 1023

D. 1.2 * 1024

In the periodic table we use today, the elements are arranged by increasing mass. True or false

What is the pressure of 0.60 moles of a gas if its volume is 10.0 liters at 35.0°C

Determine the electron geometry (eg) and molecular geometry (mg) of sibr4.

Explain why the brightness of the light emitted by a flashlight decreases as the flashlight moves farther away from you

2NaHCO3-->Na2CO3+H2O+CO2

Which usually has a higher temperature? A city or the areas around the city?

Toluene and pyridine form ideal solutions. Consider a solution of toluene and pyridine prepared at 25°C. Assuming that the mole fractions of toluene and pyridine in the vapor phase are equal, calculate the composition of the solution.

Formula for water what does the lack of a subscript after those O indicate

Why do the chemical properties cycle through each period? Every eighth element starting with hydrogen restarts the transition from metal to inert gas. Elements with atomic numbers which are multiples of eight start a new period.

Which statement correctly describes the Ka of a weak acid? The Ka is large, and the equilibrium favors products. The Ka is large, and the equilibrium favors reactants. The Ka is small, and the equilibrium favors products.