Please help me I really need hello have to turn this assignment today

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 part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

What natural processes produce large quantities of co2