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
Lady bird [3.3K]
3 years ago
13

Which of the following is most likely to produce data that are not precise

Chemistry
1 answer:
IrinaK [193]3 years ago
7 0
Precision is obtained by getting values that are very close together. If you mess around with the protocol, you'll end up with crazy values that probably are neither accurate or precise.
You might be interested in
At an elevated temperature, Kp=4.2 x 10^-9 for the reaction 2HBr (g)---> +H2(g) + Br2 (g). If the initial partial pressures o
Damm [24]

Answer : The partial pressure of H_2 at equilibrium is, 1.0 × 10⁻⁶

Explanation :

The partial pressure of HBr = 1.0\times 10^{-2}atm

The partial pressure of H_2 = 2.0\times 10^{-4}atm

The partial pressure of Br_2 = 2.0\times 10^{-4}atm

K_p=4.2\times 10^{-9}

The balanced equilibrium reaction is,

                                2HBr(g)\rightleftharpoons H_2(g)+Br_2(g)

Initial pressure    1.0×10⁻²       2.0×10⁻⁴      2.0×10⁻⁴

At eqm.            (1.0×10⁻²-2p)   (2.0×10⁻⁴+p)  (2.0×10⁻⁴+p)

The expression of equilibrium constant K_p for the reaction will be:

K_p=\frac{(p_{H_2})(p_{Br_2})}{(p_{HBr})^2}

Now put all the values in this expression, we get :

4.2\times 10^{-9}=\frac{(2.0\times 10^{-4}+p)(2.0\times 10^{-4}+p)}{(1.0\times 10^{-2}-2p)^2}

p=-1.99\times 10^{-4}

The partial pressure of H_2 at equilibrium = (2.0×10⁻⁴+(-1.99×10⁻⁴) )= 1.0 × 10⁻⁶

Therefore, the partial pressure of H_2 at equilibrium is, 1.0 × 10⁻⁶

4 0
3 years ago
The number of nitrogen atoms in one mole of nitrogen gas are...
9966 [12]

Explanation:

The number of nitrogen atoms in one mole of nitrogen gas are <em><u>6.02214179×1023 nitrogen </u></em><em><u>atoms</u></em><em><u>.</u></em><em><u> </u></em>

<em>Hope this helps... </em>

3 0
2 years ago
A functional group of atoms, such as OH, is called a
Licemer1 [7]
<span>Hydroxy group..

... :):) ....</span>
7 0
3 years ago
Someone help me please ​
kow [346]
1)Straight chain hydrocarbons are named according to the number of carbon atoms: CH4, methane; C2H6 or H3C-CH3, ethane; C3H8 or H3C-CH2-CH3, propane; C4H10 or H3C-CH2- CH2-CH3, butane; C5H12 or CH3CH2CH2CH2CH3, pentane; C6H14 or CH3(CH2)4CH3, hexane; C7H16, heptane; C8H18, octane; C9H20, nonane; C10H22, CH3(CH2)8CH3, ..
5 0
2 years ago
Examples of nitrogens unreactivity
REY [17]
WATCH OUT BUDDY:<span>reactivity....Spelling mistake.

ANSWER:
</span>For example<span>, "air" sometimes comes bubbling out of the ground near oil wells. Today ... For </span>example, nitric oxide combines with oxygen and water in the atmosphere to make nitric acid. When it ....Nitrogen's<span> role in the Oklahoma City bombing.</span>
8 0
3 years ago
Other questions:
  • Describe the difference between gravitational force and strong nuclear force
    9·1 answer
  • Using this chemical might discolour equipment and surfaces​
    6·2 answers
  • How is counting a truckload of pennies like counting the atoms in 10.0 g of aluminum? How is it different?
    8·1 answer
  • I NEED HELP!! When cells are submerged in a hypertonic solution, the salt concentration inside the cells is _______ than the sal
    14·1 answer
  • In a study of the following reaction at 1200 K it was observed that when the equilibrium partial pressure of water vapor is 15.0
    8·1 answer
  • What kind of solid often has the highest melting points?
    11·2 answers
  • What electron could have quantum numbers n = 4, l = 2, ml = -2, ms = -?
    5·1 answer
  • NaCl + H2SO4 ---&gt; Na2SO4 + HCl<br> Balance the double replacement chemical reaction.
    15·2 answers
  • Make a poem about compounds​
    9·1 answer
  • 1.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!