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amid [387]
2 years ago
6

Which is the most polar bond? a. H-Se b. P-Br c. N-I d. No right answer.

Chemistry
1 answer:
docker41 [41]2 years ago
4 0

Answer:

The answer to your question is: b. P - Br

Explanation:

Difference of electronegativities from the periodic table. The one with the highest electronegativity will be the most polar.

a.

H =  2.2

Se = 2.55

Electronegativity = 2.55 - 2.2 = 0.35

b.

P = 2.19

Br = 2.96

Electronegativity = 2.96 - 2.19 = 0.77

c.

N = 3.04

I = 2.66

Electronegativity = 3.04 - 2.66 = 0.38

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Nutka1998 [239]
1 liter = 1,000 milliliters
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3 years ago
Describe three types of POTENTIAL ENERGY
Arada [10]

There are three different forms of potential energy. The rock hanging above the ground has a form of stored energy called gravitational potential energy. This form of energy is due to the downward pull of Earth's gravity. ... When you stretch a rubber band, the elastic potential energy of the rubber band increases.

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3 years ago
What’s 0.517 in scientific notation?
Shkiper50 [21]

Answer:

5.17 × 10^-1

Explanation:

move the decimal to the right one space.

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6 0
2 years ago
How many molecules are there in 8.25 moles of CaHia?
expeople1 [14]

The number of molecules : 4.967 x 10²⁴

<h3>Further explanation   </h3>

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

8.25 moles of C₈H₁₈

The number of molecules :

\tt 8.25\times 6.02\times 10^{23}=4.967\times 10^{24}

8 0
3 years ago
Experiments show that each of the following redox reactions is second-order overall: (1) NO2(g) + CO(g) → NO(g) + CO2(g) (2) NO(
MatroZZZ [7]

Answer:

a) rate law1 = k[NO2]²

b) rate law2 = k[NO][O3]

Explanation:

NO2(g) + CO(g) → NO(g) + CO2(g)

NO(g) + O3(g) → NO2(g) + O2(g)

When [NO2] in reaction 1 is doubled, the reaction quadruples

Rxn is second order.

rate law1= [NO2]^a [CO]^b

rate law1= [NO2]² [CO]^0

rate law1 = k[NO2]²

When [NO] in reaction 2 is doubled, the rate doubles.

Rxn is first order

The ratio is 1:1

this makes the rate law2 = k[NO][O3]

6 0
3 years ago
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