I need help with these questions in the picture

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

Which of the following is a physical property flammability heat of combustion solubility and toxicity

What is the molecular formula of ferrous nitrate and ferric nitrate