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Yanka [14]
3 years ago
15

Help Chem with give brainlsit

Chemistry
1 answer:
motikmotik3 years ago
4 0

Answer:

0.15 mol HCl / 0.4 L H20 = 0.375 M HCl

Explanation:

Plug in :)

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The concentration of hydroxide ions is greater than the concentration of hydronium ions for acidic solutions.
Katena32 [7]

Answer:

True

Explanation:

It's true because the pH is a measure of how basic or acid a solution is. In an acidic medium, the pH scales goes from 0 to 7. While in a basic medium goes from 7 to 14. The lower the pH value of the most acid the solution is.

1. The expression pH = -log(molar concentration of hydronium) allow to calculate the pH of a solution.

2. On the other hand, the expression pOH = -log(molar concentration of hydroxide) allow to determine the pOH of a solution.

The values of pH and pOH always obey the following expression:

pH + pOH = 14

Thus if for instance the pH becomes smaller the pOH must become bigger in order to fulfill the equation. Which means that the concentration of hydronium ions is greater than the hydroxide concentration.

For example, in an acidic medium:

if pH= 3, pOH= 11

In this case the molar concentration of hydronium is 0,001M. And the molar concentration of hydroxide ions is just 0,00000000001M.

6 0
3 years ago
Read 2 more answers
How many grams of a 26.9% sugar solution contain 49.0 g of sugar?
Ronch [10]

Answer:

182.156g

Explanation:

grams = 49/.269 = 182.156g needed

6 0
3 years ago
If one of the impurities in diesel fuel has the formula c2h6s, what products will be formed when it burns? enter a balanced chem
inna [77]
<span>If one of the impurities in diesel fuel has the formula c2h6s, then the products that will form would be carbon dioxide, water and sulfur dioxide. The balanced chemical reaction would be as follows:

</span>C2H6S(l)<span> + 9/2O2(g) = 2CO2(g) + 3H2O(v) + SO2(g)
</span>
Hope this answers the question.
7 0
3 years ago
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Which of these carbohydrates is a monosaccharide maltose fructose cellulose or lactose
GenaCL600 [577]
Your answer should be fructose! :)

7 0
3 years ago
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Solid iron(II) sulfide reacts with aqueous hydrochloric acid to produce aqueous iron(II) chloride and hydrogen sulfide gas . Wri
Sphinxa [80]

A balanced chemical equation for this reaction :

FeS(s)+2HCl(aq)→FeCl2(aq)+ H2S(g)

<h3>Further explanation</h3>

Given

Word equation

Required

Balanced equation

Solution

The chemical equation can be expressed in terms of:

  • word equation
  • skeleton equation
  • balanced equation

Skeleton equation

FeS(s)+ HCl(aq) --> FeCl2 (aq) + H2S (g)

Balanced equation

FeS(s)+2HCl(aq)→FeCl2(aq)+ H2S(g)

7 0
2 years ago
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