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
Yuliya22 [10]
3 years ago
7

Given the following formula for calculating the ionization energy of one-electron species such as Li2+, He+, and H, calculate th

e ionization energy (in J/mol) for B4+. Use scientific notation in answers (ex: 1E10, 3.20E-6)
Chemistry
1 answer:
Yuki888 [10]3 years ago
4 0

Answer:

The answer is "32819.9 \ \frac{J}{mol}\\\\"

Explanation:

Boron: 5^{B}\to 1s^2 2s^2 2p^1

\Delta E=-2.18\times 10^{-18}\ \frac{J}{atom}\ (\frac{1}{\infity^2}-\frac{1}{n^2_{initial}})(z^2) (6.022\times 10^{23}\ \frac{atom}{mol})\\\\

      =-2.18\times 10^{-18}\ \frac{J}{atom}\ (0-\frac{1}{1})(5^2) (6.022\times 10^{23}\ \frac{atom}{mol})\\\\ =2.18\times 10^{-18}\times 25 \times 6.022\times 10^{23}\ (\frac{J}{mol})\\\\ =328.199 \times 10^{5}\ (\frac{J}{mol})\\\\ =32819 \times 10^{3}\ (\frac{J}{mol})\\\\ =32819.9 \ (\frac{J}{mol})\\\\

You might be interested in
Why do atoms move at different speeds depending on whether they are in liquids or solids.
bekas [8.4K]
<span>In a solid the atoms are tightly packed together and vibrate in place, in a liquid the atoms are loosely packed together and can move past each other,
 
extra: and in a gas the atoms are far apart and move freely and </span><em>
</em><em>
</em>
6 0
2 years ago
Calculate the mass in grams of 7.88 mol of RbMnO4
vitfil [10]
Molar mass RbMnO₄ = 204.40 g/mol

1 mole ---------- 204.40 g
7.88 mole ------ ?

mass = 7.88 * 204.40 / 1

mass = 1610.672 g

hope this helps!
8 0
3 years ago
Two unknown compounds are analyzed. Compound I contain 5.63 g of tin and 3.37 g of chlorine, while compound II contains 2.5 g of
never [62]

Answer:

Compounds 1 and 2 are not the same

Explanation:

To solve this question we need to find the molecular formula of the compounds converting the mass of each atom to moles. Molecular formula is defined as the simplest whole number ratio of atoms present in a molecula:

Compound 1:

<em>Moles Tin: </em>

5.63g Sn * (1mol / 118.7g) = 0.04743 moles

<em>Moles Cl:</em>

3.37g Cl * (1mol / 35.45g) = 0.09506 moles

Ratio Cl:Sn

0.09506 moles / 0.04743 moles = 2

Molecular formula SnCl₂

Compound 2:

<em>Moles Tin: </em>

2.5g Sn * (1mol / 118.7g) = 0.02106 moles

<em>Moles Cl:</em>

2.98g Cl * (1mol / 35.45g) = 0.08406 moles

Ratio Cl:Sn

0.08406 moles / 0.02106 moles = 4

Molecular formula SnCl₄

Compounds 1 and 2 are not the same because molecular formulas are different.

4 0
2 years ago
A 38.6 kg marble slab is shown above. What is its density? Give your answer to the nearest tenth.
LuckyWell [14K]

Answer:

Density, d=26.7\ g/cm^3

Explanation:

The attached figure shows a 38.6 kg marble slab. The dimensions of the marble slab is 23 cm × 17 cm × 4 cm

Density = mass/volume

Volume of a cuboid shape is equal to, V = 23 cm × 17 cm × 4 cm

V = 1564 cm³

Density,

d=\dfrac{38.6\times 10^3\ g}{1564\ cm^3}\\\\d=24.68\ g/cm^3

or

d=26.7\ g/cm^3

So, the density of the marble slab is 26.7\ g/cm^3.

6 0
3 years ago
Read 2 more answers
Contrast the silica content of magma in quiet and explosive eruptions
klemol [59]
Magma in quiet eruptions has a low content in silica , while in explosive eruptions, it has a high Content in silica.  A volcano that erupts quietly has  magma that is low in silica. Low-silica magma has low viscosity and flows easily.  A volcano that erupts explosively has magma that is high in silica. High-silica magma has high viscosity, making it thick and sticky, thus it flows slowly.
3 0
3 years ago
Other questions:
  • What is the pH of a 0.025 M [OH−] solution?<br><br> 0.94<br><br> 1.60<br><br> 9.60<br><br> 12.40
    6·2 answers
  • A container can hold 65g of water. circle the conversion factor needed to find the mass of water that 5 identical containers can
    13·1 answer
  • What is the mass of a gold bar that is 7.379*10^-4 m^3 in volume?
    13·1 answer
  • Listed below are sets of elements.
    5·2 answers
  • Which of the following is true about two neutral atoms of the element gold? (1 point) The nucleus is missing in both. Each has a
    12·1 answer
  • Here is my question only answer if you understand this question​
    11·1 answer
  • Is aluminum foil a compound element or mixture?
    10·1 answer
  • Chemistry screen shot below plzzzzzzz help i've been stuck forever
    11·2 answers
  • When riding a roller coaster, you go up and down many hills. As you get to the top of a roller coaster, what energy change is ta
    7·1 answer
  • Explain, in terms of electrons, why the bonding in strontium sulfide, SrS, is similar to the bonding in magnesium bromide, MgBr2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!