An atom has an 16 protons, 18 neutrons, and 13 electrons. what are its atomic number, atomic mass, and net charge?
a) atomic number = 16, atomic mass = 34, net charge = 3+
b) atomic number = 16, atomic mass = 34, net charge = 3−
c) atomic number = 34, atomic mass = 16, net charge = 3+
d) atomic number = 34, atomic mass = 16, net charge = 3−

Atomic number = number of proton = 16

Atomic mass = number of proton + number of neutron = 16+18 = 34

Net charge = Number of proton - number of electron = 16-13 = +3

OPTION A IS YOUR ANSWER

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.