Each nucleus of a cell contains:

genes and chromosomes
genes and chloroplasts
chromosomes and chloroplasts
chlorophyll and chloroplasts

In any energy conversion, some of the energy is lost to the environment as question 5 options: electrical energy potential energy sound energy thermal energy

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

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