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erica [24]
3 years ago
15

For the following element, predict the most likely oxidation number (charge) for its corresponding ion.

Chemistry
1 answer:
Morgarella [4.7K]3 years ago
5 0
<h2>Answer: D. P-3</h2>

<h3>Explanation:</h3>

The most likely ion of Phosphorous is P³⁻ (group 15) since gaining three electrons is the most energetically favorable way for it to follow the octet rule.

Because the charge on ions is equivalent to their oxidation state, then -3 is the most likely oxidation number of Phosphorous.

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Gaseous butane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . If of water is produced from
krek1111 [17]

The given question is incomplete. The complete question is :

Gaseous butane reacts with gaseous oxygen gas  to produce gaseous carbon dioxide and gaseous water . If 1.31g of water is produced from the reaction of 4.65g of butane and 10.8g of oxygen gas, calculate the percent yield of water. Be sure your answer has the correct number of significant digits in it.

Answer: 28.0 %

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of butane}=\frac{4.65g}{58g/mol}=0.080moles

\text{Moles of oxygen}=\frac{10.8g}{32g/mol}=0.34moles

2C_4H_{10}(g)+13O_2(g)\rightarrow 8CO_2(g)+10H_2O(g)

According to stoichiometry :

13 moles of O_2 require 2 moles of butane

Thus 0.34 moles of O_2 will require=\frac{2}{13}\times 0.34=0.052moles  of butane

Thus O_2 is the limiting reagent as it limits the formation of product and butane is the excess reagent.

As 13 moles of O_2 give = 10 moles of H_2O

Thus 0.34 moles of O_2 give =\frac{10}{13}\times 0.34=0.26moles  of H_2O

Mass of H_2O=moles\times {\text {Molar mass}}=0.26moles\times 18g/mol=4.68g

{\text {percentage yield}}=\frac{\text {Experimental yield}}{\text {Theoretical yield}}\times 100\%

{\text {percentage yield}}=\frac{1.31g}{4.68g}\times 100\%=28.0\%

The percent yield of water is 28.0 %

6 0
4 years ago
Except for the noble gases, nonmetals tend to have high electron affinities. What properties of nonmetals do you think are the r
kondor19780726 [428]

Answer:

Nonmetals are further to the right on the periodic table, and have high ionization energies and high electron affinities, so they gain electrons relatively easily, and lose them with difficulty.

Explanation:

They also have a larger number of valence electrons, and are already close to having a complete octet of eight electrons.

6 0
3 years ago
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What is the formula for calcium chloride?<br><br><br> Ca2Cl<br><br> CaCl<br><br> CaCl2<br><br> CaCl3
djyliett [7]
<em>Hello there, and thank you for asking your question here on brainly.

The answer to this is Answer choice C: CaCl2

</em>Hope this helped you! ♥<em>
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8 0
4 years ago
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Why is a pyramid shape used to represent the energy in an Ecosystem?​
Salsk061 [2.6K]

Answer:

An energy pyramid shows the flow of energy at each trophic level in an ecosystem. A pyramid shape is used because energy is lost at each trophic level when organisms use it up.

Explanation:

6 0
3 years ago
What two factors affect the boiling point of water?
pav-90 [236]

Answer:

D.  Pressure and temperature.

Explanation:

The answer is D because when water molecules (H2o) have heat and pressure added it will boil.  For exampe if your cooking pasta, you add water to your pan and when you add heat and put the lid of the pan it will boil.

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3 years ago
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