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a_sh-v [17]
3 years ago
12

Case #2

Chemistry
1 answer:
cestrela7 [59]3 years ago
4 0

the scientific method allows to find the answers

1) it is not correct to show unmeasured points

2) extend the experiment or graphs without missing points

3) make the graphs without the missing points and analyze the curves

the scientific method is a set of rules and processes to ensure that an investigation is correct and is not influenced by the prejudices of the researcher

1) Science is based on experimental facts, with these facts it performs, tables, graphs, it postulates principles and laws, therefore it is not correct to include values ​​that have not been measured experimentally.

2) In this experiment there are several observations

  • Make the graph without these points, which are very few, has 34 experimental points and only 6 missing, this represents a small fraction

            % missing = \frac{6}{40} \ 100

            % missing = 15%

  • Extend the study one more month to have more points and that the fraction of missing points decreases

3) If the researcher had presented the graph without the missing points, the sample that he has must already show the trend of the movement of the sun with respect to the days, making curves that fit the data.

In conclusion using the scientific method allows to find the answers

1) it is unethical to show unmeasured points

2) extend the experiment

3) make the graphs without the missing points and analyze the curves

Learn more about the scientific method here:

brainly.com/question/7508826

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Will xenon react to nitrogen and why?
pav-90 [236]
<span>No, xenon will not react on Nitrogen because xenon only reacts with oxygen and fluorine. Xenon only reacts with the 2 elements because these 2 elements contain a strong electronegative element which is high in energy barrier that can move the electrons inside xenon elements.  Xenon is an element with a symbol of Xe, it is odorless and colorless gas. Common uses of xenon are flash lamps and arc lamps. Xenon is a luminous element, it glows when placed near to high voltage electric field.

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7 0
4 years ago
The average cup of coffee contains about 125 mg of caffeine, C8H10N4O2. Caffeine is also found in tea, colas, and headache remed
Rashid [163]

Answer:

The answer to your question is 194 g

Explanation:

Molecular mass is the sum of all the masses of the atoms that form a molecule.

In the problem, we have C₈H₁₀N₄O₂ which means

                  atomic mass          number of atoms          total

Carbon           12                                      8                      12 x 8 = 96

Hydrogen         1                                     10                       1 x 10 = 10

Nitrogen       14                                       4                      14 x 4 = 56

Oxygen         16                                       2                      16 x 2 = 32

                                                                                                     194 g

8 0
3 years ago
7. Diethyl ether burns in air according to the following equation. C4H10O(l) + 6O2 (g) → 4CO2 (g) + 5H2O(l) If 7.15 L of CO2 is
iren [92.7K]

From the stoichiometry of the combustion reaction, we can see that 7.4 L of oxygen is consumed.

<h3>What is combustion?</h3>

Combustion is a reaction in which a substance is burnt in oxygen. The equation of the reaction is; C4H10O(l) + 6O2 (g) → 4CO2 (g) + 5H2O(l)

We can obtain the number of moles of CO2 from;

PV = nRT

n = 1.02 atm * 7.15 L/0.082 atm LK-1mol-1 * (125 + 273) K

n = 7.29 /32.6

n = 0.22 moles

If 6 moles of oxygen produces 4 moles of CO2

x moles of oxygen produces 0.22 moles of CO2

x = 0.33  moles

1 mole of oxygen occupies 22.4 L

0.33 moles of oxygen occupies 0.33 moles *  22.4 L/ 1 mole

= 7.4 L of oxygen

Learn more about stoichiometry: brainly.com/question/13110055

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6 0
3 years ago
A ruptured tank in Anywhere, USA, spilled hydrochloric acid. Officials were reported to be concerned that the acid might mix wit
lawyer [7]

Answer:

Option C; NONE.

Explanation:

A chemical reaction forms new chemicals called the products from the initial chemicals called the reactants. The reaction between an acid and a base is called neutralization, and the products formed are water and a salt.

When hy­drochlo­ric acid and sodi­um hy­drox­ide is mixed together, they in­ter­act, and re­sult­ in salt and a release of heat.

The re­sult of the in­ter­ac­tion of these two high­ly ag­gres­sive com­pounds is ta­ble salt and wa­ter, these resulting com­pounds are ul­ti­mate­ly harm­less, and even ben­e­fi­cial, to hu­man be­ings.

Therefore, NO TOXIC GAS WOULD BE FORMED BY MIXING HYDROCHLORIC ACID WITH SODIUM HYDROXIDE.

5 0
4 years ago
Is hydrogen a neutral atom or ion
Sloan [31]

Answer:

Hydrogen is the smallest chemical element. It has one proton and one electron, making it neutral. However, the ions of hydrogen atom are charged species. Thus, the key difference between hydrogen atom and hydrogen ion is that the hydrogen atom is neutral whereas hydrogen ion carries a charge.

4 0
3 years ago
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