The isotope with 19 protons and 20 neutrons

Describe the density of cold water with a high salinity compared to that of warm water with low salinity. Explain your reasoning

What is the chemical formula of Acrylonitrile?

Molecular bromine is 24 percent dissociated at 1600 k and 1.00 bar in the equilibrium br2 ( g. = 2br ( g. calculate kp at 1600 k.

A 10.0-gram sample of which element has the smallest volume at STP? (1) aluminum (3) titanium (2) magnesium (4) zinc

The heat of combustion of butane, c4h10, is 2874 kj/mol. what is the heat of combustion of butane, in kj per gram? (provide the right sig. fig)

For an endothermic reaction at equilibrium, the addition of a catalyst Group of answer choices causes no shift causes a shift to the right causes a shift to the left makes it an exothermic process

The atomic number of an element best corresponds to which of the following? O The mass of an atom of that element. O The number of electrons orbiting the nucleus of an atom of that element.

If a dinosaur once lived in mexico, and i now live in arkansas, can i be drinking the same water the dinosaur did?

Dough to which potassium bromate has been added rises better, producing a lighter, larger volume loaf.

Each enzyme has an optimal temperature and pH that it works best in. If enzyme ABC works best at pH 7, but ABC is in a cell with a pH of 9, will it catalyze more or less reactions?