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Helga [31]
2 years ago
7

How are scientific evidence and scientific conclusions related?

Chemistry
2 answers:
aksik [14]2 years ago
6 0

Answer:

B.

Scientific conclusions are based on scientific evidence.

Explanation:

The scientific method in steps:

1- Question

2- Research

3- Hypothesis

4- Experiment

5- Observe

6- Make a conclusion

7- Present you findings

Andrej [43]2 years ago
3 0

Answer: b

Explanation:

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If the pH of a solution is 6.96, then the solution is a
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Answer:

acid

Explanation:

solution with pH less than 7 is acid

those with more that 7 is base

those equal to 7  is neutral

3 0
2 years ago
Isotopes: are atoms of different elements which have the same mass are atoms of the same element with equal numbers of neutrons
koban [17]
I can't understand your option because there is no full stop however

isotopes are 2 or more form of elements that contain equal number of proton but different number of neutron in their nuclei
4 0
3 years ago
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How many moles of HCI would be required to produce a total of 2 moles of H2
k0ka [10]

Answer:

Should be 4 moles.

4 0
3 years ago
49.9 ml of a 0.00292 m stock solution of a certain dye is ddiluted to 1.00 L. the diluted solution has an absorbance of 0.600. w
inna [77]

Complete Question

49.9 ml of a 0.00292 m stock solution of a certain dye is diluted to 1.00 L. the diluted solution has an absorbance of 0.600. what is the molar absorptivity coefficient of the dye

Answer:

The  value is  \epsilon  =  4118.1 \  M^{-1} cm^{-1}  

Explanation:

From the question we are told that

   The volume of the stock solution is  V_1   =  49.9 mL  =  0.0499 \  L  

   The concentration of the stock solution is  C_1  =  0.00292 \  M

   The volume of the diluted solution is  V_2 =  1.00 \  L

   The absorbance is  A =  0.600

Generally the from the titration equation we have that

         C_1 * V_1 =  C_2 * V_2

=>      0.00292  * 0.0499 =  C_2 * 1

=>     C_2 = 0.0001457 \  M

Generally from  Beer's law we have that

      A  =  \epsilon  * l  *  C_2

=>   \epsilon  =  \frac{A}{ l  *  C_2 }

Here  l is the length who value is  1 cm because the unit of  molar  absorptivity coefficient of the dye is M^{-1} *  cm^{-1}

So

            \epsilon  =  \frac{0.600}{ 1   * 0.0001457   }  

=>       \epsilon  =  4118.1 \  M^{-1} cm^{-1}  

4 0
2 years ago
List the following units in order from largest to smallest: m3, mL, cL, uL, L, dL?
Novay_Z [31]
Below are the order of the units from largest to the smallest:<span>

m^3 = meters and is 1 meter^3 is equal to 1000 liters
L = Liters and 1 liter is equal to 10 deciliter
dL = decilter, 1 deciliter is equal to 10 centiliter 
cL = centiliter, 1 centiliter is equal to 10 mililiter
mL = mililiter, 1 militer is equal to </span><span>1000.000 µl</span> 
µl = micorlitre
5 0
3 years ago
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