The answer is "A" because Na = 22.9 and O =16 so it is 22.9*2+16
Answer:
the youngest is G and the oldest is K
Answer:
5.58x1023Agatoms 5.58 x 10 23 A g a t o m s
Explanation:
After determining the moles of the sample, we can convert it to the number of atoms using the Avogadro's number.
Answer:
Polychlorinated Biphenyls.
Explanation:
Polychlorinated Biphenyls are man-made chemicals. They are solids, and oily liquid in structure with no taste or small, yellow to clear in color. PCBs are present as a mixture, and very stable at an extreme pressure, and temperature. Basically they are used in electrical equipment such as transformers, and capacitors. High level of PCBs can cause broad spectrum of effects in humans, for example:
1) Increase some liver enzyme level, and cause hepatic damage.
2) Respiratory problems.
3) Dermal lesions.
