How do you find the sum of valence electrons

The combustion of 40.10 g of a compound which contains only C, H, Cl and O yields 58.57 g of CO2 and 14.98 g of H2O. Another sample of the compound with a mass of 75.00 g is found to contain 22.06 g of Cl.

A Snickers bar contains 27.0 g of sugars, 4.0 g of protein and 12.0 g of fat. How many food calories (Cal) are contained in the bar? Assume that metabolizing 1 g of protein releases the same amount of energy as 1 g of carbohydrates.

Semi-conductors have properties of both metals and non metals. which are two examples of metalloids

Glycerol boils at a higher temperature than water. What does this indicate about the attractive forces of glycerol?

Which activity most likely involves the direct use of saturated hydrocarbons?

In the ground state, has only 1 electron in a p orbital. A. carbon B. fluorine C. hydrogen D. nitrogen E. aluminum

Which of the following is a mixture? alcohol water mercury ink

A gas occupies 3.5 L at standard pressure. Find the volume of the gas when the pressure is 1.5 atm.

What is the temperature (in K) of 16.45 moles of methane gas in a 4.95 L container at 4.68 atm?

What do we call the process by which cells obtain the energy that they need?