Hydrocarbons contain which elements?

oxygen, carbon, and hydrogen

oxygen and carbon

carbon only

carbon and hydrogen

What is the foundation for Dalton's law

Why orang utans are said to be an endemic species

Calculate the energy in joules to heat 828 g of mercury from 37.0◦ C to 42.0◦ C. The specific heat capacity of Hg (ℓ) is 0.139 J/g· ◦C. Answer in units of joules.

What kind of bond is not formed by differences in electronegativity? A) ionic B) polar disalent C) polar covalent D) nonpolar covalent

Fred went to the doctor because his body was not producing semen. Which part of Fred's body was most likely functioning incorrectly to cause this problem. scrotum glands urinary bladder penis?

Ocean constitutes most of ___ of water a) Evaporation b) Precipitation c) Condensation d) Transpiration e) Sublimation Don't choose a random letter.

In the reaction, Zn + HCl-> ZnCl2 + H2, 25 grams Zn are reacted with 17.5 grams HCl. How many grams of H2 will be produced? A. 0.382 g of H2 B. 0.479 g of H2 C. 0.7865 g of H2 D. 0.484 g of H2

Is nail varnish soluble?

What is the periodic trend for atomic size from top and bottom in a group? From left to right in a period?

Which planets' orbits is the belt located between the main asteroid belt?