What can be melted with silica (silicon dioxide) to form common window glass? a. carbon b. carbonates of sodium and calcium c. sodium sulfate and sodium sulfite d. sand containing small amounts of magnesium i believe the answer is d but i'm not sure.

What is the molar mass of the anhydrous compound? answer using four significant figures. 36.02 g/mol 120.15 g/mol 156.12 g/mol

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.

The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?