3 years ago

Why did Dalton think it was important to use his system of symbols for the chemical elements?

Chemistry

2 answers:

ZanzabumX [31]3 years ago

7 0

Answer:

the answer is a

Explanation:

i did the assignment and the correct answer is a. (i put b bcos other ppl here said its b but i got it wrong)

77julia77 [94]3 years ago

4 0

The answer is : A good luck :)

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How many moles of cei3 are in 9.42 × 1021 formula units of cei3 (cerium(iii) iodide; a bright, water, soluble solid). answer in

PIT_PIT [208]

1 mol of any substance is made of 6.022 x 10²³ units.
When its 1 mol of a formula, its made of 6.022 x 10²³ formula units
Therefore if 6.022 x 10²³ formula units of CeI₃ make up 1 mol of CeI₃
Then 9.42 x 10²¹ formula units make up - 1/(6.022 x 10²³) x (9.42 x 10²¹) = 0.0156 mol of CeI₃
Therefore number of moles of CeI₃ - 0.0156 mol

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3 years ago

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~Silver