If 901 J of heat is available, how many grams of iron (specific heat = 0.45 J/g･°C) can be heated from 22.5°C to 120.0°C?

Alarge marble is dropped in a graduated cylinder with 35ml of water in it. the water level increases to 49ml. what is the volume of the marble

Define dew point. i am writing this part to be able to ask the question

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins