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goblinko [34]
4 years ago
15

What is the relationship between an atom's atomic mass and one mole of that atom?

Chemistry
1 answer:
Lelu [443]4 years ago
6 0
The atomic mass is measured in "atomic mass units" (amu). One mole of an element weighs the same atomic mass number, but in grams. 
For example, carbon, C, has an atomic mass of 12.011 amu. One mole of carbon has a mass of 12.011 grams. 
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Ethyl iodide (C2H5I) decomposes at a certain temperature in the gas phase as follows: C2H5I(g) → C2H4(g) + HI(g) From the follow
lutik1710 [3]

Answer:

Zero order

Explanation:

Looking at the data we can note a linear dependence between concentration and time.  

Time   Conc.

0          2

15         1.82

30        1.64

48        1.42

75        1.10

In the first 15 min it was consumed 2-1.82=0.18. So the rate is r=\frac{\Delta C}{\Delta t} = \frac{0.18}{15}=0.012

From 15 to 30 min (it has passed 15 min) is consumed 1.82-1.64=0.18, so as in the previous calculation the rate is r=0.012.

From 30 to 48  (it has passed 18 min)the rate is r= \frac{0.22}{18}\approx 0.012  

From 48 to 75  (it has passed 27 min) the rate is r= \frac{0.32}{27}\approx 0.012  

So these results suggest that despite of the ever minor concentration of the reactant the rate is ever the same. Hence the reaction rate could be expressed as r= k^{0} = 0.012 mol L^{-1} min^{-1} that is, the reaction is the zero order respect to C2H5I since it is not depending on concentration of C2H5I.  

7 0
3 years ago
An object has________when it has been stretched or compressed
Alina [70]

Answer:

Elasticity or Flexibility

Explanation:

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4 0
3 years ago
Is nitrogen and cobalt and carbon a mixture or pure substance
Mashutka [201]
Nitrogen pure
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Italian dressing contains olive oil and vinegar, which will separate out from each other if left to sit. This makes the dressing
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Italian salad dressing would be a suspension
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lyudmila [28]

Answer:

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Explanation:

These trends exist. elements tend to get smaller as it completes it's shell since there is more attraction when it is complete. plus the further down the periodic table you go the bigger it is. there are more electrons which repulse each other and make it bigger.

3 0
3 years ago
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