How many moles of MgCO3 are in 2.57g of MgCO3?

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound

Select the correct lewis structure for fluorine which is group 7a element?