Find pH for lemon juice pH = - log[0.00500]

The principle of conservationof mass states that in achemical reaction, the totalmass of the reactants is

Rom the equation for the decomposition of nahco3, what is the weight in grams lost when 1.000 g of nahco3 is decomposed thermally

Which adaptations to the capillaries enable substances to pass to and from cells?

When an atom of lithium loses an electron, the atom becomes a (1) negative ion with a radius smaller than the radius of the atom (2) negative ion with a radius larger than the radius of the atom (3) positive ion with a radius smaller than the radius

5. What types of waves are generated by earthquakes? A-Longitudinal and surface only B-Surface and transverse only C-Transverse and longitudinal only D-Longitudinal, transverse, and surface

What substance cannot be decomposed by physical or chemical means?

Paula is camping with her family. After their parents light a fire, Paula and her sister stand nearby to warm their hands. Her sister thinks that conduction warms their hands. Paula disagrees.

What does it take to prove a hypothesis false? O A. It is impossible to prove a hypothesis false O B. At least ten examples O C. One counterexample O D. A poorly stated question

What new inforamtion can you add the your definition of physical change?

What are groups 1, 2, and 3 examples of on a periodic table of elements? A) Metals B) Nonmetals C) Metalloids D) Noble gass