Chemistry, 28.07.2019 05:30 QueenNerdy889
In the symbol he, the superscript 4 is the for helium, and the subscript 2 is the for helium. all of the answers i've looked up have been wrong. i believe i've found the answer. look on page 293 of your textbooks. the textbook says, "the common symbol for an alpha particle is 4/2 he. the subscript is the atomic number (the number of protons). the super- script is the mass number (the sum of the numbers of protons and neutrons)."therefore the answer should be: super-script 4 is the mass number, subscript 2 is the atomic number
Answers: 1
Chemistry, 21.06.2019 17:30
Given that the molar mass of nano3 is 85.00 g/mol, what mass of nano3 is needed to make 4.50 l of a 1.50 m nano3solution? use .6.75 g18.9 g255 g574 g
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Chemistry, 21.06.2019 22:00
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Chemistry, 22.06.2019 13:00
Using the thermodynamic information in the aleks data tab, calculate the standard reaction free energy of the following chemical reaction: →+p4o10s6h2ol4h3po4s round your answer to zero decimal places.
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In the symbol he, the superscript 4 is the for helium, and the subscript 2 is the for helium. all...
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