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notka56 [123]
3 years ago
7

What is the best definition for the atomic number in an element

Chemistry
1 answer:
arlik [135]3 years ago
7 0
The atomic number in an element is usually how many protons the element has. For example, Hydrogen has a 1 on top of the H (on the periodic table), therefore, Hydrogen has 1 proton. Oxygen has an 8 on top of the O (on the periodic table) so therefore, Oxygen has 8 protons.
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Seafood Watch has made several unsustainable fishing practices illegal. true or false
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Answer:

True

Explanation:

As per the standards of fishing outlined by Seafood watch, fishing related to endangered species , threatened species, over fished or depleted species has been restricted to allow these fishes to recover otherwise they may become extinct. Catching of mammals, sharks, finish, turtles, shellfish  etc. have been strictly restricted . Not only this several fishing practices have also been restricted such as sea floor netting , Night setting , Side setting, Line shooter and mainline  tension, bait caster, live  bait, thawing bait  etc.

6 0
3 years ago
Read 2 more answers
Why is the atomic mass of most elements not a whole number?
Crank
The atomic mass is the average of the isotopes of the element meaning most averages of isotopes will not be whole numbers
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3 years ago
A 0.307-g sample of an unknown triprotic acid is titrated to the third equivalence point using 35.2 ml of 0.106 m naoh. calculat
Jet001 [13]
Triprotic acid is a class of Arrhenius acids that are capable of donating three protons per molecule when dissociating in aqueous solutions.  So the chemical reaction as described in the question, at the third equivalence point, can be show as: H3R + 3NaOH ⇒ Na3R + 3H2O, where R is the counter ion of the triprotic acid. Therefore, the ratio between the reacted acid and base at the third equivalence point is 1:3. 
The moles of NaOH is 0.106M*0.0352L = 0.003731 mole.  So the moles of H3R is 0.003731mole/3=0.001244mole.
The molar mass of the acid can be calculated: 0.307g/0.001244mole=247 g/mol.
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