What is the specific heat of 45 g block of aluminum if the temperature is increased by 8.1°C when 207 J of heat are absorbed

In which situation can a mixture always be called a solution

Find the mass, in grams, of 5.00*10^23 molecules of f2

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration