Which of the following is an example of a solution?

How can you use chemical equations to predict the products of the reaction you can carry out?

Can someone me with 1 to 4 plz. fast

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?