You are melting a chocolate and accidentally have the stove up to high. the chocolate starts to burn on the bottom of your pot. Physical or Chemical Change?

If 3.00 g of titanium metal is reacted with 6.00 g of chlorine gas, cl2, to form 7.7 g of titanium (iv) chloride in a combination reaction, what is the percent yield of the product?

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false