Which element is present in all organic compounds?

a. carbon

b. hydrogen

c. nitrogen

d. oxygen?

Why is the outermost shell of an atom significant?

Where does the carbon dioxide in the atmosphere come from

A sample of an ideal gas at 1.00 atm and a volume of 1.84 L was placed in a weighted balloon and dropped into the ocean. As the sample descended, the water pressure compressed the balloon and reduced its volume. When the pressure had increased to 30.

Which statement is true for the standard reduction potential tables

When solid mercury (ii) nitrate is heated, it decomposes to form solid mercury (ii) oxide, gaseous nitrogen dioxide, and oxygen?

What is the term used for carrying rock away? Question 4 options: mechanical chemical deposition erosion

How do I balance this H2 + O2 = H2O

Which notation represents atoms that have the same number of protons but a different neutron? 1) H-3 and He - 3 2) S-32 and S - 32 3) CI-35 and CI - 37 4) Ga-70 and Ge - 73

A mole is the amount of a substance that contains as many particles as the number of atoms in 12 grams of what isotope? A) Boron-12 B) Carbon-12 C) Calcium-39 D) Aluminum-26

Do you guys know any cool app for revision apart from quiz let