The answer would be 19.3g/cm^3
Explanation: D=m V;D = 38.6g/2cm^3 = 19.3g/cm^3. Due to the chart, the unknown sample is gold. Gold is a soft metal that is malleable and ductile. It has a great density value, which makes it heavy metal.
P= 38.6/2 =19.3g/cm^3
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.
Formula is (CH3)2CHCH2C(CH3)3 and the name is 2,2,4-trimethylpentane
Ultra violet is the correct Answer
Polyhydroxyalkanoates or PHAs are straight polyesters created in nature by bacterial aging of sugar or lipids. They are delivered by the microbes and store carbon and vitality. More than 150 distinct monomers can be consolidated inside this family to give materials with to a great degree diverse properties.
Hope this helps