Answer:
Calcium hydroxide.
Explanation:
The gastric juice is a solution of hydrochloric acid. It is highly acidic. Antacids contain basic chemicals that could neutralize that acid.
If the active ingredient in an antacid medication is a metal hydroxides ("alkalis,") it is likely to be calcium hydroxide . Compared with other metal hydroxides, is superior in multiple ways.
<h3>Calcium hydroxide is less soluble and is a relative mild metal hydroxide</h3>
and rapidly dissolve in water to produce a strongly basic solution. In contrast, the solubility of calcium hydroxide in pure water is relatively low. That means that there's a lower chance for antacids based on calcium hydroxide to irritate the mouth and throat while being swallowed.
<h3>
Calcium hydroxide is generally non-toxic</h3>
Hydroxides of toxic "heavy" transition metals, such as copper (II) hydroxide, are even weaker than calcium hydroxide. However, when these alkalis react with the HCl in gastric juice, they release their toxic metal cations. As a result, these alkali are seldom used in antacids. In contrast, calcium occurs naturally in many dairy products and is not as toxic.
Magnesium hydroxide is weaker than calcium hydroxide and is also not toxic. However, since the magnesium ion is a potential laxative, it is not as frequently used as calcium hydroxide in antacids.
Answer:
To make one gallon of 5% methyl alcohol we require 115.2oz of water and 12.8oz of 50% methyl alcohol solution
Explanation:
Required solution = 1 gallon of 5% methyl alcohol or1 gallon 5/100 moles per dm3 of methyl alcohol
Number of moles in required solution = 0.05moles/dm3 × 1gallon
Where 1 gallon = 0.00378dm3
= 0.05moles/dm3 × 0.00378dm3 = 1.892×10-4 moles
The quantity of the 50% solution with Paul required is given by
50% = 50/100 = 0.5 moles/dm3
Volume of 50% solution of methyl alcohol that contains 1.892×10-4 moles
= concentration = (Number of moles)/(volume of dm3) of solution thus
Volume of solution = (Number of moles)/(concentration)
1.892/0.5 =3.785×10-4dm3 of the 50% solution is required to make 1 gallon of 5% solution
3.785×10-4dm3 = 12.8oz
Thus to make 1 gallon or 128oz solution of 5% alcohol requires
128oz - 12.8 oz = 115.2oz of water and 12.8oz of 50% methyl alcohol solution
A because you can prove that with the graph you are given in the wuestion
La energía térmica es la energía que proviene del calor.
De nada ;)
Oxygen can be separated by heating certain oxygen compounds by electrolysis or by liquefying air.