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3 years ago

Draw the structure of bromous acid, hbro2. optimize formal charges.

Chemistry

1 answer:

ArbitrLikvidat [17]3 years ago

8 0

STRUCTURE OF BROMOUS ACID: H–O–Br=O

In this structure, all the elements have a formal charge of zero. The formal charge of each element is calculated below: 

H: 1 – 1/2(2) – 0 = 0
O: 6 – 1/2(4) – 4 = 0
Br: 7 – 1/2(6) – 4 = 0
O: 6 – 1/2(4) – 4 = 0

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Why does a permeable rock weather chemically at a fast rate?

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Water soaks into it easily and during freeze-thaw cycles would be more likely to break apart because of the water freezing and thawing inside the rock. The water freezes and expands inside the rock, causing the surface to break off in flakes from the pressure of the expanding ice inside.

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3 years ago

How many grams of FeCl 3 are in 250. mL of a 0.100 M solution?

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Answer:

The correct answer is option B

Explanation:

$$Molarity=\frac{Weight}{Molecular \,weight} \frac{1000}{V(in \, ml)}$

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4 years ago

Which Two of the following are pure substances*

Snowcat [4.5K]

Answer:

I think A and B

Explanation:

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3 years ago

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A 1.00 liter solution contains 0.43 M hydrofluoric acid and 0.56 M potassium fluoride. If 0.280 moles of potassium hydroxide are

kolbaska11 [484]

Answer:

Answers are in the explanation

Explanation:

Equlibrium of HF in H₂O is:

HF + H₂O ⇄ F⁻ + H₃O⁺

Now, the KOH reacts with HF, thus:

KOH + HF → F⁻ + H₂O

That means after reaction, concentration of HF decrease increasing F⁻ concentration.

Now, seeing the equilibrium, as moles of HF decrease and F⁻ moles increase, the equilibrium will shift to the left decreasing H₃O⁺ concentration.

For the statements:

A. The number of moles of HF will increase. FALSE. HF react with KOH, thus, moles of HF decrease

B. The number of moles of F- will decrease. FALSE. The reaction produce F⁻ increasing its moles.

C. The equilibrium concentration of H₃O⁺ will increase. FALSE. The equilibrium shift to the left decreasing concentration of H₃O⁺

D. The pH will decrease. FALSE. As the H₃O⁺ concentration decrease, pH will increase

E. The ratio of [HF] / [F-] will remain the same. FALSE. Because moles of HF are decreasing whereas F- moles are increasing changing, thus, ratio.

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3 years ago

If a compound has a molar mass of 180 g/mol and its empirical formula is CH2O, what is its molecular formula? CH2O C2H4O2 C6H12O

irinina [24]

Its molecular formula : C₆H₁₂O₆

<h3>Further explanation </h3>

The empirical formula(EF) is the smallest comparison of atoms of compound forming elements.

A molecular formula(MF) is a formula that shows the number of atomic elements that make up a compound.

(EF) n = MF

its empirical formula is CH₂O

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$\tt [30]n=180\rightarrow n=6\\\\(CH_2O]_6=C_6H_{12}O_6$

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3 years ago

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