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AnnyKZ [126]
4 years ago
10

EASY 8TH GRADE SCIENCE

Chemistry
2 answers:
mixer [17]4 years ago
6 0
Generally chemists measure substance in moles because it is very difficult to count the number of molecules<span />
Korvikt [17]4 years ago
6 0

the answer is Mole. if this helps

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A/1 * B/C =D, You find yourself with 17 guilders (a gold coin) but you are planning on taking a trip to a country where the loca
Gemiola [76]

Exchange rate is 2 guilders for every 3 florins

The conversion factor will be

2 guilders / 3 florins = 3 florins / 2 guilders = 1

so if we wish to convert 17 guilders to florins we will use following conversion factor

3 florins / 2 guilders = B / C

D = 17guilders X 3 florins / 2 guilders = 25.5 florins

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3 years ago
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Answer: the answer is B

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4 years ago
Nickel has a face-centered cubic unit cell with an edge length of 352.4 pm. Calculate the density of nickel
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3 years ago
Which of these are most likely to occur along a transform boundary?
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3 years ago
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The two naturally occurring isotopes of antimony, 121Sb (57.21 percent) and 123Sb (42.79 percent), have masses of 120.904 and 12
Alex

Answer:

The correct answer is option c.

Explanation:

Formula used to determine an average atomic mass :

\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i

Mass of isotope Sb-121 = 120.904 amu

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Mass of isotope Sb-123 = 122.904 amu

Fractional abundance of Sb-123 = 42.79% = 0.4279

Average atomic mass of Sb:

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7 0
3 years ago
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