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Ray Of Light [21]
3 years ago
13

Question 11 (10 points)

Chemistry
1 answer:
andrey2020 [161]3 years ago
4 0

Answer:

The correct answer is option a.

Explanation:

When aluminum hydroxide reacts with of nitrous acid it gives of aluminum nitrite and of water.

Al(OH)_3+3HNO_2\rightarrow Al(NO_2)_3+3H_2O

According to above reaction ,when 1 mole of aluminum hydroxide reacts with 3 moles of nitrous acid it gives 1 mole of aluminum nitrite and 3 moles of water.

Hence, the correct answer is option a.

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Which of the following molecules would you expect to have a dipole moment of zero? a,CH2 Ch3
Vadim26 [7]

Answer: The molecule CH_{3}-CH_{3} is expected to have a dipole moment of zero.

Explanation:

The product of magnitude of the charge calculated in electrostatic units is called dipole moment.

Formula for dipole moment is as follows.

Dipole moment = Charge (in esu) \times distance (in cm)

Non-polar molecules have zero dipole moment.

For example, CH_{3}-CH_{3} is a non-polar molecule so its dipole moment is zero.

H_{2}C=O is a polar molecule so it will have dipole moment.

CH_{2}Cl_{2} is a polar molecule so it will have dipole moment.

NH_{3} has nitrogen atom as more electronegative than hydrogen atom. So, net dipole moment will be in the direction of nitrogen atom.

Thus, we can conclude that the molecule CH_{3}-CH_{3} is expected to have a dipole moment of zero.

4 0
3 years ago
A solar panel combines multiple photovoltaic cells. Which type of energy is used to power a solar panel? kinetic energy thermal
fredd [130]
<h2>Answer : Electromagnetic energy</h2><h3>Explanation :</h3>

The solar panel usually combines multiple photo voltaic cells. Electromagnetic energy is used to power a solar panel. As the electromagnetic energy or rather radiations from the sun reaches to Earth in the form of radiation which is then collected by these photo voltaic cells. As the term solar energy simply suggests that the energy is coming from the sun. Thus, electromagnetic energy coming from the sun was produced when electric charges inside the sun change their potential energy.

6 0
3 years ago
What is the power of a food processor that can perform 1,350 joules of work in 15 seconds
velikii [3]
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6 0
2 years ago
Find the distance between two points rounding to the nearest tenth<br> (-7,-1) and (-4,3)
qaws [65]
The beast tenth is 2 cause it’s close to both
8 0
2 years ago
Hydrogen chloride decomposes to form hydrogen and chlorine, like this. Also, a chemist finds that at a certain temperature the e
Jobisdone [24]

Answer:

0.595

Explanation:

Let's consider the decomposition of hydrogen chloride.

2 HCl(g) ⇄ H₂(g) + Cl₂(g)

The pressure equilibrium constant (Kp) is equal to the product of the partial pressure of the products raised to their stoichiometric coefficients divided by the product of the partial pressure of the reactants raised to their stoichiometric coefficients.

Kp = pH₂ × pCl₂ / pHCl²

Kp = 77.9 × 54.4 / 84.4²

Kp = 0.595

8 0
3 years ago
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