Charcos es una hetereogenea o homogenea?​

How do you know when a chemical reaction has occurred

Exit what is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?