Sue dissolved a certain amount of salt in 400 grams of water to obtain 405 grams of salt solution. what was the mass of the salt used to make the solution?

What are transitions between a liquid and a solid called? identify which way they are transitioning

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)