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aev [14]
3 years ago
12

Amanda found two snakes slithering in her garden. The first snake way only a baby,and was just 3/4 of an inch long. The second s

nakes was 7 1/3 times longer. How long was the second snake?
Chemistry
1 answer:
iren [92.7K]3 years ago
7 0
To solve this problem you would add 3/4 to 7 1/3. 
3    22
4     3

9         88
12        12

97
12

8 1/12
The final answer would be 8 and 1/12

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How would the kinetic energy of the rider change if his mass were doubled?
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Answer:

Explanation:  A

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3 years ago
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A Beer's Law Plot of sample A gives a slope equal to 1.2 M-1cm-1. Calculate molar concentration of this sample at a wavelength o
Rashid [163]

Answer:

0.192\ \text{M}

Explanation:

A = Absorbance of solution

E = Molar absorptivity

l = Length of cuvette = 1 cm

c = Concentration of solution

Beer's law is given by

A=Elc

The equation of a straight line is given by

y=mx+c

Comparing the above equations we get

Value on y axis = A = Absorbance of solution = 0.23

m = Slope of line = El = Molar absorptivity multiplied with length = 1.2\times 1\ \text{M}^{-1}

x = Value of x axis = c = Concentration of solution

So we get

c=\dfrac{A}{El}\\\Rightarrow c=\dfrac{0.23}{1.2\times 1}\\\Rightarrow c=0.192\ \text{M}

The molar concentration of the sample is 0.192\ \text{M}

5 0
3 years ago
Can someone help me!
Art [367]

Answer:

A

Explanation:

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4 years ago
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Drag electrons back and forth until the molecule of oxygen (O2) is stable. Click Check to confirm your molecule is stable. How m
svlad2 [7]

Answer:

2 pairs (4 electrons)

Explanation:

In a molecule of oxygen there are 2 oxygen atoms. There are 6 electrons in the outer shells of oxygen atoms. When 2 oxygen atoms form a covalent bond they share their electrons. In a diagram this would be represented by the overlap of the two circles representing the outer shells of both oxygen atoms. If each oxygen atom 'puts forward' 2 electrons into the centre, then 4 will be shared overall for each atom, making both atoms have full outer shells of 8 electrons each. 4 electrons make 2 pairs, hence the answer.

7 0
3 years ago
Calculating the expected pH of the buffer solution: Given that the pKa for Acetic Acid is 4.77, calculate the expected pH of the
ser-zykov [4K]

Answer:

pH=4.77

Explanation:

From the question we are told that:

pKa for Acetic Acid pK_a= 4.77

Therefore

For Equal Concentration of acetic acid and acetatic ion

CH_3COOH=CH_3COO^-

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pH=pK_a+log\frac{base}{acid}

pH=4.77+log\frac{CH_3COO^-}{CH_3COOH}

pH=4.77+log1

pH=4.77

5 0
3 years ago
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