Suppose that 70g of a substance is dissolved in 100cm^3 of water at 80°c. how much of the substance, in grams, will precipitate when the solution is cooled down to 30°c?

a. 55
b. 45
c. 10
d. 30
e. 25

If you had a super power what would it be? ? brainliest to best answer

This was a series of articles written to persuade new york to ratify the constitution.

Which of the following is not true about hydroelectricity a. use of gravitational force of flowing water b. its the most widely used renewable energy c. it has a high output of co2 that fossil fuels d. it has no direct waste asap