The bond between Br atoms in a Br2 molecule is(1) ionic and is formed by the sharing of two valence electrons
(2) ionic and is formed by the transfer of two valence electrons
(3) covalent and is formed by the sharing of two valence electrons
(4) covalent and is formed by the transfer of two valence electrons
Answers
Final answer:
The bond between Br atoms in a Br2 molecule is covalent and is formed by the sharing of two valence electrons.
Explanation:
The bond between Br atoms in a Br2 molecule is covalent and is formed by the sharing of two valence electrons.
In a covalent bond, atoms share electrons to complete their outer electron shell. In the case of a Br2 molecule, each Br atom has 7 valence electrons and needs 1 more electron to achieve a stable octet arrangement, so they share one pair of electrons to achieve this.
The bond between Br atoms in a Br2 molecule is covalent and is formed by the sharing of two valence electrons.
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Related Questions
An element has an atomic number of 92 and a mass number of 234. how many neutrons does the element have? 192 142 92
HELP!!!!!! Multiple choiceDuring transmutation...A. the number of neutrons always decreases.B. the number of neutrons always increases.C. the number of protons always increases.D. the number of protons always decreases.
Which substance can not be decomposed by a chemical change?(1) AlCl3 (3) HI(2) H2O (4) Cu
How would you be able to use the spectrum of each gas to establish its identity
Answers
Explanation: it is a chemical compound with molecular formula of P4O6. The suggested name for it is tetraphosphorus hexoxide.
energy from sunlight?
A. Vacuole
B. Nucleus
C. Chloroplast
D. Cell Membrane
Answers
Answer:
Chloroplast
Explanation:
b. It conducts electricity when in molten form.
c.It conducts electricity when it is dissolved in water.
d.It does not conduct electricity in any form.
Answers
atoms held together by covalent bonds do not contain free moving electrons or ions, so they do not conduct electricity in any state.
Answer:
D) It does not conduct electricity in any form.
Explanation:
Edge 2020 Trust
Answers
Answer:
Percentage of a sample remains after 60.0 min is 13.03%.
Explanation:
- It is known that the decay of isotopes of C-11 obeys first order kinetics.
- Also, it is clear that in first order decay the half-life time is independent of the initial concentration.
- Half-life time (t1/2) in first order reaction = 0.693/k, where k is the rate constant.
∴ k = 0.693/(t1/2) = 0.693/(20.4 min) = 0.03397 min⁻¹.
- The integrated law for first order reaction is:
kt = ln[A₀]/[A],
where, k is the rate constant (k = 0.03397 min⁻¹).
t is the time of the reaction (t = 60.0 min).
[A₀] is the initial concentration of C-11 ([A₀] = 100.0 %).
[A] is the remaining concentration of C-11 ([A] = ???%).
∵ kt = ln[A₀]/[A]
∴ (0.03397 min⁻¹)(60.0 min) = ln(100%)/[A]
∴ 2.038 = ln(100%)/[A]
- Taking e for both sides:
∴ 7.677 = (100%)/[A]
∴ [A] = (100%)/(7.677) = 13.03%.
So, percentage of a sample remains after 60.0 min is 13.03%.
Final answer:
The half-life of Carbon-11 is 20.4 minutes, meaning the quantity reduces by half every 20.4 minutes. So, after approximately 60.0 minutes (roughly three half-lives), approximately 12.5% of the original sample would remain.
Explanation:
Carbon-11 is a radioisotope that's widely used in medical imaging due to its radioactive properties. It has a half-life of 20.4 minutes, which means that the quantity of Carbon-11 reduces to half in every 20.4 minutes.
If we denote one half-life as t, after three half-lives (60.0 min or 3t), the ratio of the remaining sample of Carbon-11 would be 1/2 * 1/2 * 1/2 = 1/8. In other words, approximately 12.5% of the original sample would be remaining. This percentage changes a bit due to the fact that 20.4 min is slightly less than 22.2 min (which would be the exact 3 half lives).
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Answers
Answer:
The percent yield of oxygen in this chemical reaction is 73.71 %.
Explanation:
Experimental yield of oxygen gas = 115.0 g
Theoretical yield:
Mass of potassium chlorate = 400.0 g
Moles of potassium chlorate =
According to reaction, 2 moles of potassium chlorate gives 3 moles of oxygen gas.
Then 3.2653 mol of potassium chlorate will give:
Mass of oxygen gas :
Percentage yield:
The percent yield of oxygen in this chemical reaction is 73.71 %.
Answers
Answer: Step 1: List the known quantities and plan the problem. Known. 4.96 moles O2; 1 mol = 22.4
Explanation: I hope that helped.