A compound has an empirical formula of

CH20. What is its molecular formula, if its

molar mass is 180 g/mol?

(C=12.01 amu, H=1.008 amu, O=16.00 amu)

In which substance does sulfur have an oxidation state of + 4? 1. S 2. H2S 3. SO2 4. SO3

During the lunch rush, Ryan made ten sandwiches with two slices of rye bread and one slice of turkey. Which formula represents the sandwiches he made? 12RT 10R2T 12RT2 10RT2

How much energy moves onto the next level, in an energy pyramid

Adding pure water to a saturated solution (one with solid particles at the bottom) would cause the concentration of that solution to ... A) increase B) Decrease C) Remain the same

How many atoms are in 313.5 L of Bromine (Br) gas

Combined gas law problem: a balloon is filled with 500.0 mL of helium at a temperature of 27 degrees Celsius and 755 mmHg. As the balloon rises in the atmosphere, the pressure and temperature drop.

1. What hypothesis could you propose about the relationship between the position of a type of atom in a molecule and the number of bonds that the atom forms? Explain your thinking.

The molality of a solution is a measure of - A - moles of solute per kilogram of solution B - moles of solute per liter of solution C - moles of solute per kilogram of solvent D - moles of solute per liter of solvent

Which technology has allowed for exploration beyond our solar system? A) space probe B) space station C) space shuttle D) space observatory

Which carbonate is most stable to heat? A. Sodium carbonate B. Copper (ii) carbonate C. Zinc carbonate