1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
insens350 [35]
3 years ago
14

Which of the following is not a postulate of the kinetic-molecular theory?

Chemistry
1 answer:
Vera_Pavlovna [14]3 years ago
3 0

Answer:

umm can u give us the options for this question so we can try to help u

Explanation:

You might be interested in
A 5.00-mL sample of blood was treated with trichloroacetic acid to precipitate proteins. After centrifugation, the resulting sol
Anarel [89]

Explanation:

According to the Beer-lambert' s law,

        Absrobance = absrobptitvity × lenght × concentration

So, if we will plot a graph between absrobance and concentration then we will obtain a straight line

Hence, formula to calculate slope of the graph is as follows.

   The slope of graph = \frac{\text{difference in absrobance at two points}}{\text{difference in concentrations at those points}}

The given data is as follows.

     A_{1} = 0.412 (first point)

     A_{2} = 0.642 (second point)

     C_{1} = 0.240 ppm (first point)

     C_{2} = 0.475 ppm (second point)

Hence, putting these values into the above formula we will calculate the value of slope as follows.

           Slope = \frac{\text{difference in absrobance at two points}}{\text{difference in concentrations at those points}}

                     = \frac{0.642 - 0.412}{0.475 - 0.240}

                      = \frac{0.23}{0.235}

                     = 0.978

It is known that for the graph, line equation can be written as follows.

                       y = mx + c  ........... (1)

where,      C = intercept

                 m = slope

Hence, calculate the value of intercept as follows.

           0.412 = 0.24 \times 0.978 + c

               c = 0.178

As it is given that the absorbance values 0.454 (the y-axis value). Therefore, putting this value into equation (1) we get the following.

                     y = mx + c

                  0.454 = x \times 0.978 + 0.178

                   0.276 = 0.978x

                         x = 0.282 ppm

Thus, we can conclude that the concentration of Pb in the given sample is 0.282 ppm.

3 0
3 years ago
How many moles are in 135g of Teflon?
Oliga [24]

1.34 moles are in 135g of Teflon.

Explanation:

Molecular formula of teflon is (C2H4)n

mass of teflon = 135 grams

atomic mass of teflon = 100.01 gram/mole

number of moles of teflon = ?

Formula used to calculate number of moles in a substance is given as:

number of moles = \frac{mass}{atomic mass of 1 mole}

putting the values in the above equation:

number of moles = \frac{135}{100.01}

number of moles = 1.34 moles

Teflon is polymer which is used for making non-stick coating, in 135 grams of teflon there are 1.34 moles in it.

5 0
3 years ago
The answer to (3.540)x(0.0065)x(401) should have ____.
miv72 [106K]
B. Two significant figures


Your final answer can only have as many significant figures as the number that has the least amount of significant figures in it, which is (0.0065)
3 0
3 years ago
A fish tank measures 0.40 meter long by 0.20 meter wide by 0.30 meter high. What is the width of the tank in centimeters?
umka21 [38]
Well the width is 0.20 meters. Since there are a hundred centimeters in a meter, we just have to move the decimal point two times to the right to get a 20 centimeter width. 
6 0
3 years ago
How many Molecules does CH4 Have
valentinak56 [21]

Answer:

The amount of molecules in CH4, also known about methane is simply 0.85 * 6.02210 * 10^23 This amounts to about 5.1 * 10^23

4 0
3 years ago
Other questions:
  • M = 50 kg
    7·1 answer
  • Name two hormones produced by the endocrine system and describe how they work with other organ systems to maintain homeostasis
    8·2 answers
  • A large amount of dust and ash from a recent volcanic eruption settles in the region, which is most likely to survive, deer, fis
    10·1 answer
  • A solution is made by mixing of methanol and of acetic acid . Calculate the mole fraction of methanol in this solution. Round yo
    6·1 answer
  • BRAINLIEST ANSWER!
    11·1 answer
  • What is the mass of a 120 mL sample of pure silicon with a density of 2.3 g/mL?
    9·1 answer
  • 2 examples of when scientists used space probe technology to find out more about comets.
    11·1 answer
  • Classify a bond between Carbon (EN = 2.6) and Oxygen (EN = 3.4).
    14·1 answer
  • The use of uranium-238 to determine the age of a geological formation is a beneficial use of
    8·1 answer
  • 2HgO O2 + 2Hg
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!