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const2013 [10]
3 years ago
10

How did the discoveries of scandium (sc) and germanium (ge) affect mendeleevâs work?

Chemistry
2 answers:
lukranit [14]3 years ago
3 0

they showed mandeleeves predictions were correct

OlgaM077 [116]3 years ago
3 0

Answer:

they showed mandeleeves predictions were correct

Explanation:

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1. An oxide of chromium is found to have the following % composition: 68.4% Cr
abruzzese [7]

Answer:

Empirical formula is Cr₂O₃.

Explanation:

Given data:

Percentage of Cr = 68.4%

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Solution:

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Atomic ratio:

                            Cr               :         O

                           1.32/1.32     :       1.98/1.32

                               1              :        1.5

Cr : O = 1 :  1.5

Cr : O = 2(1 : 1.5)

Empirical formula is Cr₂O₃.

6 0
3 years ago
A car's speed is 214.6 % of a bicycle. if the car is going 24.853 mph, what is the bike's speed?______mph
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