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3 years ago

Someone please help me and thank you:)

Chemistry

1 answer:

Zepler [3.9K]3 years ago

6 0

Guess what? Sasha dies in season 4 they got 360 no scoped to a little kid
Explanation :
It’s legit in season 4 Sasha got clapped and died

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The element potassium forms a _______ with the charge . The symbol for this ion is , and the name is . The number of electrons i

erik [133]

Answer:

The element potassium forms a cation with the charge +1 . The symbol for this ion is K⁺, and the name is potassium ion. The number of electrons in this ion is 18.

Explanation:

Potassium is a metal. It belongs to the group 1 elements. Metals form cations by losing electrons. Since potassium is a group element, it forms a cation by losing one electron. The charge it has is +1 due to the excess of the protons compared t the electrons by 1.

Potassium has 19 electrons. Potassium io on the other hand has 19-1 = 18 electrons.

4 0

4 years ago

How many protons are in this atom if it has a balanced charge?<br> - 0<br> - 2<br> - 4<br> - 6

AveGali [126]

Answer:

Explanation:

If there are 6 electrons and it has a balanced charge, there also must be six protons.

3 0

2 years ago

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In a chemical reaction, the difference between the potential energy of the products and the potential energy of the reactants is

vova2212 [387]

Answer:

4. the heat of reaction

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3 years ago

Nitrogen transmutes to form an isotope of oxygen. The superscript for oxygen is

a_sh-v [17]

₇N¹⁴ + ₂He⁴ → ₈O¹⁷ + ₁H¹

The superscript for oxygen is 17.

3 0

3 years ago

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The painkiller, Advil® contains the active ingredient ibuprofen (IB), which has a pKb of

denis23 [38]

This problem is providing the basic dissociation constant of ibuprofen (IB) as 5.20, its pH as 8.20 and is requiring the equilibrium concentration of the aforementioned drug by giving the chemical equation at equilibrium it takes place. The obtained result turned out to be D) 4.0 × 10−7 M, according to the following work:

First of all, we set up an equilibrium expression for the given chemical equation at equilibrium, in which water is omitted for it is liquid and just aqueous species are allowed to be included:

$Kb=\frac{[IBH^+][OH^-]}{[IB]}$

Next, we calculate the concentration of hydroxide ions and the Kb due to the fact that both the pH and pKb were given:

$pOH=14-8.20=5.80$

$[OH^-]=10^{-5.8}=1.585x10^{-6}M$

$Kb=10^{-5.20}=6.31x10^{-6}$

Then, since the concentration of these ions equal that of the conjugated acid of the ibuprofen (IBH⁺), we can plug in these and the Kb to obtain:

$6.31x10^{-6}=\frac{(1.585x10^{-6})(1.585x10^{-6})}{[IB]}$

Finally, we solve for the equilibrium concentration of ibuprofen:

$[IB]=\frac{(1.585x10^{-6})(1.585x10^{-6})}{6.31x10^{-6}}=4.0x10^{-7}$

Learn more:

(Weak base equilibrium calculation) brainly.com/question/9426156

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3 years ago