One of your classmates is having trouble understanding ions, he explain the formation of a cation like this: "when you add an electrons, you get a positive charge because adding is positive in math

there are many consequences!

some being:

* addiction

* health issues

* mental issues

explanations: - as per the significant figures rule, in multiplication and division, we go with least number of sig figs.

4.03 has three sig figs where as 0.0000035 has two sig figs only, the zeros in this number are not sig figs as they are just holding the place values. as the least number of sig figs here is two, the answer needs to be reported with two sig figs only.

sound

it is sound because the dog covered his ears.