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The question is incomplete, the complete question is;
Groups of the periodic table correspond to elements with a. the same color b. the same atomic number c. similar chemical properties d. similar numbers of neutrons
Answer:
similar chemical properties
Explanation:
In the periodic classification of elements, elements are divided into groups and periods. Elements in the same group of the periodic table have the same number of outermost electrons and share very similar chemical properties.
Elements in the same period have the same number of shells and the same maximum energy level of the outermost electron. Chemical properties carry markedly across a period.
Answer:
It would be 2.323167848877082
Explanation:
All of the elements from Cs to At
Answer:
The student should use 156.7 g of solution
Explanation:
31.9 %w solution of acetic acid in ethanol means 100 g of solution contains 31.9 g of acetic acid.
So, 450. g of solution contains 
of acetic acid or 143.55 g of acetic acid
Alternatively, 143.55 g of acetic acid is present in 450. g of solution
So, 50.00 g of acetic acid is present in 
solution or 156.7 g of solution
Hence the student should use 156.7 g of solution
