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ValentinkaMS [17]
3 years ago
8

What grade percentage is developing, proficient, exceeding, and emerging?​

Chemistry
2 answers:
user100 [1]3 years ago
5 0

Answer:

Grade A is the best percentage that is developing, proficient, exceeding, and emerging

laila [671]3 years ago
3 0
The answer will be 60% - 80%.
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The following reactions take place in the ozone layer by the absorption of ultraviolet light.
____ [38]

Answer:

Option B will require a shorter wave length of light.

Explanation:

The bonding between Ozone (O3) and Oxygen (O2) can be used to explain why the breaking of oxygen into Oxygen radicals will require a shorter wave length.

  • The bond between Oxygen (O2) is a double bond while Ozone (O3) has an intermediate bond between a double bond and a single bond.
  • The bond order of Oxygen (O2) is equals 2 while that of Ozone (O3) is 1.5. Since the bond order of oxygen is higher, it will require more energy to break the bond compared to breaking the Ozone (O3) bond.
  • Recall that Energy is inversely proportional to wave length.
  • So it will require a shorter wave length to break the Oxygen (O2) into its radicals.
5 0
3 years ago
The Lewis dot model of a molecule is shown. A visual diagram of a PCl3 molecule is shown. Phosphorous is the central atom with a
Nostrana [21]

The answer is B. Each chlorine has three non-bonded pairs and one bonded pair of electrons.

I just took the test and it was correct! 5/5 :)

8 0
3 years ago
Read 2 more answers
How many moles of nickel (Ni) atoms are in 125 g Ni?
Anna11 [10]
<span>The solution to the problem is as follows:

125/58.69 = 2.12 mol 
</span>
Therefore, there are 2.12 moles of <span>nickel (Ni) atoms are in 125 g Ni.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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3 0
3 years ago
Read 2 more answers
A 0.2121g sample of an organic compound was burned in a stream of oxygen and the carbon dioxide produced was collected in a stre
pav-90 [236]

Answer:

The answer to your question is: 17.26% of carbon

Explanation:

Data

CxHy = 0.2121 g

BaCO₃ = 0.6006 g

Molecular mass BaCO₃ = 137 + 12 + 48 = 197 g

Reaction

                    CO₂  +  Ba(OH)₂  ⇒   BaCO₃  +  H₂O

Process

1.- Find the amount of carbon in BaCO₃

                              197 g of BaCO₃   ---------------  12 g of Carbon

                               0.6006 g           ----------------    x

                               x = (0.6006 x 12) / 197

                               x = 0.0366 g of carbon

2.- Calculate the percentage of carbon in the organic compound

           0.2121 g of organic compound  ---------------  100%

           0.0366g                                       --------------    x

                              x = (0.0366 x 100) / 0.2121

                              x = 17.26%

4 0
3 years ago
If you start with 2 moles of Al and 2 moles of HCl, what will the limiting reactant be?
artcher [175]

Answer:

you have to give us the product in order for us to know the limiting reactant.

8 0
2 years ago
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