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3 years ago

Which of the following combinations led to a precipitation reaction?

Chemistry

1 answer:

Pani-rosa [81]3 years ago

3 0

(3) Silver Nitrate and Aluminium Sulfate

Explanation:

Silver nitrate and aluminium sulphate reacts to form Aluminium nitrate and silver sulfate.

The reaction is shown below:

6AgNO₃ (aq) + Al₂(SO₄)₃ (aq) → 2Al(NO₃)₃ (aq) + 3Ag₂SO₄ (S)

From the balanced equation we can see that Ag₂SO₄ or silver sulfate is the precipitate formed.

Aluminium sulfate and silver nitrate both are chemical compounds. There are many reactions that uses net ionic equation like acid-base neutralization reaction, redox reaction, double displacement reaction etc.

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825 mL sample of an unknown HClO4 Solution requires titration with 22.62 mL of 0.2000 M NaOH to reach the equivalence point. Wha

vichka [17]

Answer:

$M_{acid}=5.484x10^{-3}M$

Explanation:

Hello,

By using the following formula, which comes from the assurance of the equivalence point:

$M_{acid}*V_{acid}=M_{base}*V_{base}\\M_{acid}=\frac{M_{base}*V_{base}}{V_{acid}}$

We just simply compute the acid's concentration (molarity), turning out into:

$M_{acid}=\frac{0.2000M*22.62mL}{825mL} \\\\M_{acid}=5.484x10^{-3}M$

Best regards.

5 0

3 years ago

When molecules have a shorter bond length does it take more or less energy to break the chemical bond between those atoms?

Sloan [31]

Answer:

more energy

Explanation:

shorter lengths in bonds require more energy because atoms are strongly connected in short length bonds

7 0

3 years ago

El siguiente bloque de masa 2 kg acelera a razón de 4 m/s, calcula el módulo de la fuerza F

choli [55]

Answer:

8 Newton

Explanation:

f = m × a

2 × 4 = 8 Newton

8 0

3 years ago

Draw a line-bond structure for CBrN. Explicitly draw all H atoms. You do not have to include lone pairs in your answer. In cases

DochEvi [55]

Answer:

Br - C ≡ N

Explanation:

To draw the Lewis line-bond structure we need to bear in mind the octet rule, which states that in order to gain stability each atom tends to share electrons until it has 8 electrons in its valence shell.

C has 4 e⁻ in its valence shell so it will form 4 covalent bonds.

Br has 7 e⁻ in its valence shell so it will form 1 covalent bond.

N has 5 e⁻ in its valence shell so it will form 3 covalent bonds.

The most stable structure that respects these premises is:

Br - C ≡ N

It does not have any H atom.

8 0

3 years ago

Please dont answer if you dont know. It's the parts of a wave

Marina86 [1]

Answer:

1) wavelength
2) trough
3) amplitude
4) crest

Explanation:

Hope this helps!

5 0

3 years ago