Which phrase describes an abiotic factor? A. fish in a pond B. bacteria on the skin C. air temperature D. number of species on a seashore

Why shouldn't we add water to sulfuric acid?

What do you think is the most important step in the scientific method? why?

Which of the following describes electron sharing between two oxygen atoms. A) Each Oxygen shares 6 electrons with the other B) Each Oxygen shares 2 electrons with the other C) Each Oxygen shares 8 electrons with the other D) Each Oxygen shares 1

A typical sterilising pad contains approximately 0.6g of propan-2-ol. How many moles of propan-2-ol does a typical sterilising pad contain?

Which observation is a qualitative observation the student can make?

Which of the following equations represents a double-displacement reaction? A. FeS (s) + 2HCl (aq) ® H2S (g) + FeCl2 (aq) B. 2Sb (s) + 3I2 (g) ® 2SbI3 (s) C. Zn (s) + H2SO4 (aq) ® ZnSO4 (aq) + H2 (g) D. 2HgO (s) ® 2Hg (l) + O2 (g)

Consider the Williamson ether synthesis between 2-naphthol and 1-bromobutane in strong base. A reaction was performed in which 0.51 g of 2-naphthol was reacted with a slight excess of 1-bromobutane to make 0.29 g of 2-butoxynaphthalene.

How many molecules of n2 are in a 300.0 ml container at 780 mmhg and 135°c?

Why is gas able to flow

Identify the atom whose nucleus is composed of 56 protons and 82 neutrons