Which of the following best defines an acid?

An acid has a pH of 7.

An acid has hydroxide ions.

An acid has fewer positive ions in solution.

An acid has more hydrogen ions in solution.

2. Which change occurs when N3 + is changed to an N atom? Three neutrons are lost. Three electrons are lost. Three protons are gained. ons Three electrons are gained. ons

Which statement is the best example of pseudoscience? A. Mike joined a group that studies phrenology. B. C. J. joined a group that studies endangered species. C. Katarina joined a group that studies herbal remedies. D.

I don't know how to figure out which bonds are for the compound. Like is it molecular, covalent or ionic?

What is the structure of a krypton85 atom

1. Which variable is the independent variable and which is the dependent variable? Density vs. ethylene glycol A. A 25-mL volumetric flask with its stopper has a mass of 32.6341 g.

The reaction below has an equilibrium constant kp=2.2*106 at 298 k. 2cof2 (g) ⇌co2 (g) + cf4 (g) calculate kp for the reaction below. cof2 (g) ⇌12co2 (g) + 12cf4 (g)

The electrical conductivities of the following 0.100 M solutions were measured in an apparatus that contained a light bulb as the indicator of conductivity. Rank the solutions in order of decreasing intensity (brightest to dimmest) of the light bulb.

What is the name of a list of elements arranged according to the ease with which they undergo certain chemical reactions?

Why is it harder for the earth to recover from some natural disasters now? A) Human influence may compound the damage. B) The natural disasters have gotten worse. C) This statement is not true.

Heat is most closely related to ___ energy. A. Nuclear B. Electrical C. Thermal