Determine the empirical formula of a compound that contains 30.45% nitrogen and 69.55% oxygen

Spattering does occur and some of the sample is lost onto the laboratory bench. Will the reported mole ratio of tin to oxygen be too high, too low, or unaffected? Explain

Under which conditions can an eclipse occur? sun blocks Earth moon blocks the sun moon blocks Earth sun blocks the moon

The observation that ethanol (C2H5OH) has a higher vapor pressure than water (H2O) at the same temperature is due to more A. Hydrogen bonding in the water B. Kinetic energy in the ethanol C. London forces in the ethanol D.

The volume of a gas is reduced from 4 l to 0.5 l while the temperature is held constant. what does the pressure of the gas do?

Which answer describes a chemical reaction in equilibrium? 1. the reactants are all used up 2. all the product is formed 3. the forward and reverse reactions have ceased 4. the forward and reverse reaction rates are the same

What are the names of groups of metalloids

What is the attractive force that occurs between the sun and the earth called? friction magnetism weight gravity

What is the amount of heat released when 25g of water cools 12.5 degrees C?

What is hotter 17 degrees celcius or 58 degrees Fahrenheit

How do aqueous solutions of ionic and molecular compounds differ