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Ipatiy [6.2K]
3 years ago
8

Use the drop-down menus to classify the elements as alkali metals, alkaline earth metals, or transition metals.

Chemistry
2 answers:
Rama09 [41]3 years ago
7 0

Nickel (Ni):  transition metal

Potassium (K): alkali metal

Cadmium (Cd):  transition metal

Calcium (Ca): alkaline earth metal

Barium (Ba): alkaline earth metal

aleksley [76]3 years ago
3 0
The following are the classification of each element above:

Nickel - Transitional Metal
Potassium- Alkali Metal
Cadmium- Transitional Metal
Calcium- Alkaline Earth Metal
Barium- Alkaline Earth Metal

I attached a color-coded, labelled period table that will help to see the derivative of my responses.

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8 0
3 years ago
A sample of black coffee was measured to have [h3o+] = 7.94 × 10−6. what is true about this solution?
Sveta_85 [38]
Being given the hydronium (or simply the hydrogen) ion concentration (molarity), one of the easiest properties of the solution to determine is its pH. The pH of a solution indicates the acidity (or basicity) of a given solution. The typical pH range of solutions is from 1 to 14, with 7 being neutral, 1 to 6 being acidic, and 8 to 14 being basic. 

To determine the pH of a solution, the negative log (-log) of the hydronium/hydrogen ion concentration (molarity) of the solution is calculated. Thus (assuming that the given hydrogen ion concentration is in molarity (mol/L)),

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Because the pH is less than 7 (within the range 1 to 6), then the black coffee solution is acidic. </span>
6 0
3 years ago
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andrew-mc [135]

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MAVERICK [17]
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3 0
3 years ago
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8 0
3 years ago
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