Which free elements are found in the earths crust

Which atomic model proposed that elections move in specific orbits around the nucleus of an atom? A) Dalton's atomic model B) Thomson's atomic model C) Rutherford's atomic model D) Bohr's atomic model E) Quantum atomic model

A papermaking factory releases waste into a local lake. Soon, many fish in the lake begin to die. How might this hurt the economy of the area? a Local fishermen will lose their jobs. B. The papermaking factory will make less paper. C.

How many moles are 12.04 x 10^23 atoms of carbon

In which location would a free neutron from a decaying U-235 atom be most likely to cause another atom to go split? A. In a sample of naturally occurring uranium B. In a sample of enriched uranium C. In a sample of rock or soil D.

A solution has a pH of 2.4. What happens to the solution if the hydronium ion concentration is increased?

Which statement describe how the bond between two oxygen bond atoms is formed?

The bonds in the compound MgSO4 can be described as A. ionic, only B. covalent, only C. both ionic and covalent D. neither ionic nor covalent

If The mass of a box is increased and the force stay the same, determine the relationship with acceleration

A balloon contains 0.15 moles of co2 gas. how many molecules of co2 are in the balloon?

Acids A) are generally proton donors B) produce H + ions in solution C) are electron pair acceptors D) may include all of these characteristics