How many bromine atoms are present in 39.1 g of CH2Br2

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

If e is the symbol for an element, which two of the following symbols represent isotopes of the same element? 1. e2. e3. ea.1 and 2c.1 and 4b.3 and 4d.2 and 3