WILL GIVE BRAINLIEST AND 20 POINTS! Calculate the number of moles of the indicated substance in each of the following samples.
A. 49.2 mg of sulfur trioxide 6.14 x 10-4 mol SO3
B. 7.44 x 104 kg of lead(IV) oxide
C. 59.1 g of chloroform, CHCl3
D. 3.27 mg of trichloroethane, C2H3Cl3
E. 4.01 g of lithium hydroxide

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.

Select the correct answer. why are scientific models important in the study of science? a. they always involve critical mathematical calculations. b. they scientists understand complex ideas and objects that aren’t easy to handle. c. they enable scientists to popularize their work in society. d. they are required when conducting any peer review process. e. they are necessary for turning a hypothesis into a law.