Điện tích hạt nhân của nguyên tử nitơ là 7+. Số electron lớp ngoài cùng của nguyên tử nitơ là A. 2 electron B. 3 electron C. 4 electron D. 5 electron

Explain what happens at the saturation point when adding salt to water at room temperature.

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.

Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.