Try C I’m sorry if you get it wrong but I’m like 90% sure
2.3g of sodium would be needed to create a 100 millimole concentration in one liter.
Given,
Mole of Na+ = 100 millimole
As we know that,
1 millimole = 10 -³ mole
Mole of Na+ in 100 millimoles = 100 × 10 -³ mole
= 0.1mole
<h3>What is Mole? </h3>
Mole is defined as the ratio of mass of Na+ to the molar mass of sodium.
<h3>What is Molar Mass? </h3>
The molar mass is defined as the sum of the total mass in grams unit of the atoms present to make a molecule per mole.
Mole of Na+ = mass of Na + / molar mass of Na +
0.1 = mass of Na + / 22.99 gl mol
Mass of Na + = 0.1 × 22.99
= 2.299 g
Mass of Na + = 2.3 g
Thus, we calculated that 2.3g of sodium would be needed to create a 100 millimole concentration in one liter.
learn more about moles:
brainly.com/question/15209553
#SPJ4
<span> They are called that because while the outermost level contains at most two electrons, they are next to outermost main levels have incompletely filled d sub-orbitals, which are filled-up progressively on going across the periodic table from 8 to 18 electrons. The filling of the d sub-orbitals of the transition elements across a row of the periodic table is not always regular.</span>
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.
