The number of protons is equal to the atomic number of every element in the periodic table.
Example: The atomic number of Niobium (Nb) is 41. Therefore, the number of protons is also 41.
Answer:
Explanation:
The formula for Mercury(II) Oxide is
Balanced Equation:
Stoichiometry:
There are two kinds of mixtures which are homogeneous and the heterogeneous. Homogeneous mixtures are mixtures that maintain the same uniform appearance and composition throughout; whereas, heterogeneous mixtures are mixtures that contain different visible substances or phases. Here are examples of each mixture.
Homogeneous mixtures: Rainwater, Air and Dishwashing detergent (This kind of mixture only shows one phase of matter)
Heterogeneous mixtures: cereals with milk, ice in soda and mixed nuts. (Obviously, this kind of mixture contains different phases of matter either in liquid, solid or gas).
Answer:
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- <u><em>2)NH</em></u><em><u>₃</u></em>
Explanation:
The answer choices of this question are:
<h2 /><h2>Solution</h2>
The key to answer this question is to realize that <em>NH₃</em> is a gas at the given temperatures.
The solutilibty of all gases always decreases when the temperature increases. Thus, the solubility of NH₃ will decrease when the temperature rises from 10ºC to 50ºC.
The reason for this behavior of gases is that the temperature and the kinetic energy of the particles are directly proportional. Thus, as the temperature incrases the kinetic energy of the particles increases.
As the kinetic energy of the molecules of gas in the liquid solution increases, their speeds also increase, meaning that more molecules will escape from the solution to the gas phase, leaving the soluton with less dissolved gas molecules.