The weighted average of the atomic masses of the naturally occurring isotopes of an element is the.

Arecycling company gives you 5 cents for every plastic bottle and 10 cents for every glass bottle. from a certain individual the recycling company received 59 bottles and paid $4.55. how many glass bottles did the individuals recycle?

2) the relationship between temperature in degrees fahrenheit, f, and units kelvin, k, is given by the formula k32) 273.15. which of the following readings, in kelvins, is equivalent to a fahrenheit reading of 7 (rounded to the nearest hundredth decimal place)?

If i got an 1040 on my psat, what are the chances of being able to get a 1400 on the sat. and are there any recommended ways to study.