An atom has 143 neutrons, 92 protons, and 91 electrons. what element is it?

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid

Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in water? check all that apply. view available hint(s) check all that apply. sodium fluoride, naf octane, c8h18 propanol, ch3ch2ch2oh potassium iodide, ki benzene, c6h6