If 50 mL of hard water that you obtained contained 6.3 mg of magnesium, how hard would the water be according to the table below? Show your calculation with units on all numbers. (1000mL = 1 L)

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius

Mr. rose asked his student to draw a quadrilateral with four unequal sides. an example of this kind of quadrilateral