Scientific investigations are carried out by the following the scientific

What did John Dalton publish?

Convert methane into ethane

Identify each of the following statements as being most similar to a hypothesis, a law, of a theory. explain your reasoning. (a) The pressure of a sample of gas is directly proportional to the temperature of gas.

An atom of 64ni has an experimentally determined nuclear mass of 63.9280 amu. calculate the mass defect, δm, in atomic mass units (amu).

The compound manganese (II) bromide is a strong electrolyte. Write the transformation that occurs when solid manganese (II) bromide dissolves in water.

An unknown solution turned red litmus paper red, turned blue litmus paper blue, and didn't conduct electricity. The solution is most likely ... a Basic b Acidic c Neutral d Not enough information to determine

Which of the following does NOT occur at a subduction zone? A. The leading edges of both plates are bent downward. B. Oceanic crust is pushed down into the mantle. C. One oceanic plate moves into another oceanic plate. D.

4. What structural characteristics do all hydrogen atoms have in common?

Which of the following would be a result of increased solar activity? A. Longer winters B. Warmer-than-normal sea surface temperatures C. Colder-than-normal sea surface temperatures D. Shorter summers

The electron configuration of an element is 1s22s22p63s23p64s1. why is this a representative element?