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Dafna11 [192]
4 years ago
14

Which of the following is not true regarding a properly written chemical reaction

Chemistry
1 answer:
sergeinik [125]4 years ago
7 0
Where is the following

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Which property would be least helpful in determining whether a substance is a metal or a nonmetal?
Marina86 [1]

The answer is state.

That is the state would be least helpful in determining whether a substance is a metal or a nonmetal. The state can only tells that a compound is liquid, gas or solid. But it can't tell whether a substance is metal or non-metal. So it is the least helpful in determining whether a compound is metal or non-metal.

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3 years ago
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1. What is a chemical reaction
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a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.

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The sodium chloride molecule breaks apart in water. what does a represent
yarga [219]
What represent ???( the molecules get dissolved in water)..
5 0
4 years ago
Imagine a made-up pol
zheka24 [161]

Answer:

No change to the cation  Add -ide to the anion

Question 1 and .2

Explanation:

6 0
3 years ago
The concentration of hydroxide ions is less than the concentration of hydronium ions for acidic solutions. True False
wolverine [178]

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.

4 0
3 years ago
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