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ipn [44]
3 years ago
14

Which of the following would form a cation? Ne Li O I

Chemistry
2 answers:
geniusboy [140]3 years ago
5 0
Li because its charge is +1.
MAVERICK [17]3 years ago
3 0
I believe the answer would be Li
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Sometimes the oxidation state of an analyte must be adjusted before it can be titrated.
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Answer:

Explanation:

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3 years ago
Iodine-131 half life 8.040 how long will it take for a 40 gram sample of iodine-131 to decay to 0.75 grams
otez555 [7]

Answer:

See explanation below

Explanation:

To get this, we need to apply the general expression for half life decay:

N = N₀e(-λt)    (1)

Where:

N and N₀ would be the final and innitial quantities, in this case, masses.

t: time required to decay

λ: factor related to half life

From the above expression we need λ and t. To get λ we use the following expression:

λ = t₁₂/ln2   (2)

And we have the value of half life, so, replacing we have:

λ = 8.04 / ln2 = 11.6

Now, we can replace in (1) and then, solve for t:

0.75 = 40 exp(-11.6t)

0.75 / 40 = exp(-11.6t)

ln(0.01875) = -11.6t

-3.9766 = -11.6t

t = -3.9766 / -11.6

<h2>t = 0.34 days</h2><h2></h2>
3 0
3 years ago
When two fluorine atoms bond together in F2, what type of covalent bond do they form?
Angelina_Jolie [31]

The correct statement is " A single bond, because they overlap orbitals to share one pair of electrons." A fluorine atom is unstable with 7 electrons in its valence shell and so needs one more electron  to achieve stability. This is according to the octet rule which states that an atom will gain or lose electrons until there are 8 electrons in its valence shell. So each fluorine donates an electron to form a single pair and the F_2 achieves a noble gas configuration.

3 0
3 years ago
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GaryK [48]
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3 0
3 years ago
Calculate the percent error if the experimental value for the density of zinc is 9.95g/cm3, but the accepted value is 7.13g/cm3
Pani-rosa [81]
In order to calculate the experimental percent error, we follow these steps:
1- Subtract one value from the other (order does not matter as we take absolute)
2- Divide the obtained number by the accepted or true value.
3- Multiply the fraction you got from step 2 by 100 to get the percentage of error.

Now, we will apply these steps on our problem:
1- Subtract one value from the other:
9.95 - 7.13 = 2.82
2- Divide by accepted value:
2.82 / 7.13 = 0.3955
3- Multiply by 100 to get the error percentage:
error percentage = 0.3955 x 100 = 39.55%
7 0
3 years ago
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