What is the molar mass of sodium carbonate (Na2CO3)?

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4

Why do cells appear different in distilled water than they do in 10% salt water?