How does ionization energy increase on the periodic table
Answers
Ionization energy increases across a period from left to right in the periodic table.
Ionization energy
Ionization energy is the energy needed for the complete removal of valence electrons in its ground state from an isolated atom in its gaseous phase at a specified temperature to form an ion.
Ionization energy shows periodicity in that it shows a regular variation across a period and down a group in the periodic table.
Ionization energy increases across a period from left to right in the periodic table.
Learn more about ionization energy at: brainly.com/question/1445179
The trends showing increase in ionization energy on the periodic table ~
- Ionization energy increases as we move from left to right in a period.
[ due to increase in effective nuclear charge ]
- Ionization energy increases as we move from bottom to top in a group.
[ Due to decrease in number of shells ]
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No so that 01) In how many different ways can we arrange letten of the word HEURISTICS. C'must always occur at the third place?
A balloon that had a volume of 3.50 L at 25.0°C is placed in a hot room at 40.0°C. If the pressure remains constant at 1.00 atm, what is the new volume of the balloon in the hot room?
Potassium has nineteen protons. how many electrons does a neutral potassium atom have? a. 0 b. 17 c. 19 d. more information is needed to figure this out.
Answers
Answer: An intramolecular force holding 2 atoms together
Explanation:
C apex approved
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(Side Note: Isotopes are atoms of the element that have the SAME number of protons but different number of neutrons, so they have different mass numbers. Also average atomic mass is the average of all the isotopes in an element - this number is the one that is shown on the periodic table of elements, not mass number).
Let me show you how to do this..
For the isoptope 63Cu I will first need to convert it's percentage of abundance into a decimal, because we don't use the percentage to multiply. 69.97% -> 0.6997. Now I am going to take it's atomic mass 62.9300 and multiply that by 0.6997.
62.9300*0.6997=44.0321
Now we still need to find calculate this for the isotope 65Cu. To convert 31.03% to a decimal I will just move the decimal point two places to the left, to get 0.3103.
So I am going to take this and multiply it by 64.9200 the atomic mass of the isotope 65Cu.
64.9200*0.3103=20.1447
Add the two of these to get the average atomic mass..
20.1447 + 44.0321=64.1768
Answers
Answer:
56.4 mmHg
Explanation:
Given:
Vapor pressure of the solution, P solution = 55 mmHg
The mass of sucrose (C₆H₁₂O₆) = 10 g
Also, Molar mass of sucrose (C₆H₁₂O₆) = 180 g/mol
So, moles = Given mass/ molar mass
Hence, moles of sucrose in the solution = 10 g / 180 g/mol = 0.05556 mol
Given that: Mass of ethanol = 100 g
Molar mass of ethanol = 46 g/mol
Hence, moles of ethanol = 100 g / 46 g/mol = 2.174 mol
Mole fraction of solvent, ethanol is:
X ethanol = 2.174 mol / (2.174 + 0.05556) mol = 0.975
Applying Raoult's Law
P solution = X ethanol*P° ethanol
=> P° ethanol = P solution / X ethanol = 55 mmHg / 0.975 = 56.4 mm Hg
Explanation:
The given data is as follows.
Vapor pressure of the solution = 55 mm Hg
Mass of sucrose = 10 g
Molar mass of sucrose = 180 g/mol
Therefore, moles of sucrose present into the solution will be calculated as follows.
No. of moles =
=
= 0.055 mol
Mass of ethanol is given as 100 g and its molar mass is 46 g/mol.
Hence, number of moles of ethanol will be calculated as follows.
No. of moles =
=
= 2.174 mol
As mole fraction =
Hence, mole fraction of etahnol will be calculated as follows.
=
=
= 0.975
Now, using Raoult's Law as follows.
=
=
= 56.4 mm Hg
Thus, we can conclude that the vapor pressure of the pure solvent is 56.4 mm Hg.
Answers
Mg (s) + NaOH (aq) -> Mg (OH)2 (s) + Na (aq)
s stands for solid, aq stands for aqueous
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Answer:
Unit rate at which Martin paints in walls per gallon is .
Explanation:
Rate is defined as ratio between two quantities with different units.
Gallons of paint used by Martin = gallons
Portion of wall Martin wishes to pint = wall
Rate at which Martin paints the wall:
Unit rate at which Martin paints in walls per gallon is .
Answers
Its chemical formula is : CH3COOH or HC2H3O2.
- - - - -
The proper name for vinegar is vinegar.
It consists of roughly 15% acetic acid and 85% water, with a small amount of natural vegetable colorants and volatiles (hence the differences in colours and odours between brown vinegar, white vinegar, cider vinegar, balsamic vinegar, etc.)
The acid in vinegar is indeed acetic acid; however, 90 percent of all the acetic acid on the market is made in chemical plants. Almost all of that - 83 percent of the total - is made by reacting methanol and carbon monoxide in the formula
CH3OH + CO -> CH3COOH
The rest is made by oxidizing either acetaldehyde or ethylene.
Vinegar is always made by fermenting fruit juices. It is a two-stage process, in which yeasts convert fruit juice to wine, then acetobacter bacteria convert the alcohol in wine to acetic acid. Because many nations' food laws prohibit the use of vinegar in edibles that is not made through the fermentation of fruit juice, they are very careful to only call fruit juice-derived acetic acid "vinegar."