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BartSMP [9]
3 years ago
11

What is the name for the S2- ion

Chemistry
1 answer:
Brrunno [24]3 years ago
5 0

Answer:

Sulfide

Explanation:

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B: Carbon Dioxide emissions from fossil fuels

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A student needs to conduct a reaction that combines chemicals a and b to synthesize product ab. if we write this as a chemical e
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The concept used here is the Law of Conservation of Mass. Technically, it's more specifically included in the Law of Definite Proportions. According to Dalton's atomic theory, when substances react together, they form a compound that has the same fixed ratio of the individual elements. That is the main reason why we balance, because stoichiometric coefficients are essential to obey the Law.

For the reaction a + b ⇒ ab, this is a combination reaction. For every 1 mole of a and 1 mole of b, 1 mole of product ab is formed. This is the fixed ratio we have to follow: 1:1:1. Now, the next thing to note is the limiting and excess reactant. If initially, there are 2 moles of A and 3 moles of B, the limiting reactant is A and the excess is B. Since the ratio between reactants is 1:1, 3 moles of B requires 3 moles of A. But since only 2 moles are available, reactant A is limited. In this problem, we assume that B is provided in excess. So, we just focus on the amount of the limiting reactant a.

If there are 5,000 molecules of a, we can determine the molecules of ab using the fixed ratio, 1 part a is to 1 part ab. Then, that means that 5,000 molecules of a would yield also 5,000 molecules of ab.                                                                                         
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Which is one possible way the digestive system works together with other body system
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4 0
3 years ago
How many grams of potassium chloride are in 6.90 moles? 10.8g 74.6g 257g 514g
Vedmedyk [2.9K]
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3 0
3 years ago
For a reaction, a plot of ln K versus inverse temperature is found to be linear and fits the following equation: y = -1,498x + 7
Harrizon [31]

Answer:

12.455 KJ/molK = ΔH

Explanation:

One way to write Van't Hoff equation is:

lnK = -ΔH / RT + ΔS/R

<em>Where R is gas constant (8.314472 J/molK)</em>

The graph of lnK vs 1/T has as slope -ΔH / R and as intercept ΔS/R

If in the graph you obtain the equation:

y = -1,498x + 7.14

-1,498 =  -ΔH / R

-1,498×8.314472J/molK =  -ΔH

12455 J/molK = ΔH

<em>12.455 KJ/molK = ΔH</em>

<em></em>

4 0
3 years ago
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