What is the primary purpose of a randomized experiment?

Match each sampling method with its description.

Put the levels of measurement in order from least to most precise.

Why can’t you use a pie chart to represent data greater than or less than 100%?

What is the correct chemical formula of a compound composed of potassium ions and phosphate ions?

Balance the following chemical equation:          Fe2O3 (s)   +          C (s)    →           Fe (s)  +         CO2 (g) What is the correct coefficient for carbon?

What is the charge on the cation for the ionic compound Mn(SO4)2?

Which of the following compounds contains ONLY  ionic bonds? Hint: Ionic bonds are found in ionic compounds and covalent bonds are found in molecular compound and within polyatomic ions.   

Which of the following is best classified as a combination reaction?

Calculate the percentage by mass (in %) of chlorine in cisplatin, PtCl2(NH3)2.