What is the role of roughages in the balanced diet

Which statement describes chemical reactions that take place at different rates? A. One reaction produces more products than the other. B. One reaction begins with more reactants than the other. C.

Humpty Dumpty weighs 400 Newtons. He falls off a wall 3 m high. How much work was done by gravity on Humpty Dumpty?

Which of these is the best definition of a fuel cell? a small container that holds a source of energy a solar cell that captures light energy and converts it into electricity a votac cell that uses the oxidation of a fuel to produce electricity a

Which of the following would likely form a heterogeneous mixture? A. sand and water. B. sugar and water C. baking soda and water D. salt and water

Calculate the molarity 20ml of 3.5 m kci in to a final volume of 100 ml

What energy conversion occurs when a battery powered car rolls across the floor?

A sample of gas has a volume of 5.79 L at 25C and 518. What will be the volume of this gas at STP

Calculate the pH of a buffer consisting of 0.50 M HF and 0.45 F - a) before b) after addition of 0.40 g of NaOH to 1.0 L of the buffer

Materials with small, connected pores are a. impermeable c. unsaturated b. permeable d. saturated

Which of the following work by Robert Hooke most likely impacted later scientists who developed the theory that all organisms are made of cells? a.