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.
The protons come from water. Sulfur oxides dissolve in water to form sulfurous and sulfuric acids, and nitrogen oxides dissolve to form nitrous and nitric acids.
Number of moles = number of atoms/Avogadro's number
= (4.8x10^25)/(6.02x10^23)
=79.7 mol (3sf)
Answer:
Potential energy is the stored energy of position possessed by an object.
Accuracy is the closeness of a measurement to the true value. Precision is the closeness of agreement among a set of results.
Suppose you read a refrigerator thermometer five times and get the Celsius readings 39.0, 39.3, 39.0, 39.1, and 39.0.
The average temperature is 39.1 °C. Your readings are <em>precise</em> because most of the readings are within 0.1 °C of the average.
However, if the actual refrigerator is 37.0 °C, your readings are <em>not accurate</em> because they are off by about 2°C.
If you use a thermocouple and get an average reading of 37.00, 37.03, 37.00, 37.01,and 37.00, your readings are both <em>accurate</em> and <em>more precise</em> than those from the refrigerator thermometer.
