Assignment:
A compound contains 40.00% carbon, 6.67% hydrogen, and 53.33% oxygen. Determine the empirical formula of the compound.
Q1. Give the chemical formula for calcium phosphate.
Q2. A hypothetical element, Js, has three naturally occurring isotopes. The atomic mass and relative abundance of each isotope are: 35% 191 Js, 20% 185 Js,And 45% 192 Js. What atomic mass should be reported for this element?
Q3. A gas sample at 75 degrees C and 2.0 atm pressure occupy a volume of 2.5L. What volume will it occupy at STP?
Q4. Convert 200 degrees C to degrees F.
Provide complete and step by step solution for the question and show calculations and use formulas.