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Law Incorporation [45]
3 years ago
15

During a rainy spring, where are you most likely to find surface runoff

Chemistry
1 answer:
Dahasolnce [82]3 years ago
7 0

Answer:On a sloped parking lot

Explanation:

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Calculate the number of atoms in a 5.31 x 10³ g sample of sodium.<br><br> number of atoms:
Leviafan [203]

Answer:

        no of atoms =   13.9 x 10^25

Explanation:

                No. of moles = mass of compound / molar mass of   compound

   

       As ; mass of sodium = 5.3 x 10^3 g

       

        Molar mass of sodium = 22.9 g/ mol

         

        putting values  

         

         n = 5.3 x 10^3 / 22.9

       

         n = 231.4 mol

Also; no of mol (n) = no of particles / Avagadros number

               so no of particles = n x Avagadros no.

     

               put n = 231.4 and Avagadros no = 6.023 x 10^23

 

                 no of particles = 231.4 x 6.023 x 10^23

                                   =   13.9 x 10^25  

       

             

4 0
2 years ago
Which atom in the ground state has a stable valence electron configuration?
Alecsey [184]
(1) Ar is your answer. Argon is a noble gas, which is stable in its standard valence electron configuration because it already completed its valence shell following the octet rule.
3 0
3 years ago
Read 2 more answers
Can anyone help me with a chemistry problem please?
steposvetlana [31]

Answer:

where is the problem?!?

5 0
3 years ago
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A compound with molecular formula C4H8O2, shows absorptions at 2500-3300 cm-1 (broad), 1720 cm-1 and at 1200 cm-1 on the IR spec
xxMikexx [17]

Answer:

Butanoic Acid:

I have attached the structure of Butanoic Acid. Please refer to the attachment.

Explanation:

Solution:

First of all, we need to calculate the double bond equivalent (DBE) for the compound given:

Compound = C4H8O2

DBE = (C +1) - (H + X - N)/2

C = no. of carbons

H = no. of Hydrogen

X = no. of Halogens

N = no. of Nitrogen

DBE = (4+1) - (8/2)

DBE = 5-4

DBE = 1

It indicates the presence of 1 double bond in the possible structure.

Further structure can be identified by looking the peak values of the spectrum. So, we have,

2500 - 3300 = it indicates the presence of -COOH group

1720 = it indicates the (C=0) stretching  

1200 = It indicates the (C-O) stretching

SO, the possible structure is

Butanoic Acid:

I have attached the structure of Butanoic Acid. Please refer to the attachment.

7 0
3 years ago
How does concentration affect our daily lives in science?​
statuscvo [17]

1. <em>Increasing the concentration of one or more reactants will often increase the rate of reaction. This occurs because a higher concentration of a reactant will lead to more collisions of that reactant in a specific time period. </em>

<em>2. Physical state of the reactants and surface area.</em>

8 0
3 years ago
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