Answer:
Explanation:
Ionization energy:
It is the minimum amount of energy required to remove the electron from isolated gaseous atom to make the ion.
As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell.
When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required. Where as,
When we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.
As the size of atom increases the ionization energy from top to bottom also decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.
cubic centimeter (cm^3) has the same volume as a
Answer:
1 cc=1 ml=0.001 liter
Explanation:
One cubic centimeter has the same volume as one milliliters. Both are equally used in analytical problems to express the volume of a substance.
What is volume ?Volume is a physical quantity that measures the total space occupied by a substance. Volume is an extensive quantity and thus depends on the amount of the substance.
The mass of a substance per unit volume is called its density. Volume is dependent on the intermolecular forces between the particles of the substance. The SI unit of volume is liter (L). Other units are ml, cm³, dm³ etc.
One cubic centimeter has the volume as one milliliters.
Hence, 1 cm³ = 1 ml
1000 m or 1000 cm³ is one liter of the substance.
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i need some help its due soon
Answer: it would be B
Calculate the density of a material that has a mass of 52.457 g and a volume of 13.5 cm3.
Answer:
3.8857037037g per cm3
Explanation:
52.357g/13.5 cm3 = 3.8857037037
Round if needed
What is the correct order of these items from smallest to largest radius? Group of answer choices
Na+ < F- < O2-
Na+ < O2- < F-
O2- < F- < Na+
O2- < Na+ < F-
I'm assuming you're talking about atomic radius. It'd be the 2nd.
Fluoride has the smallest (group 17)
Oxygen has the 2nd smallest (group 16)
Sodium has the largest (group 1)
Sorry it took so long, didn't know it was multiple choice :)
Correct any mistakes in the electron configurations below.
Answer:
E.) 1s^22s^22p^23s^4p^4
Explanation:
Answer:
See explanation.
Explanation:
D. 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d8;
Explanation: before filling 3d orbitals, 4s needs to be filled. Since s holds 2 electrons, take two from the 3d10.
E. 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p3;
Explanation: after the 4s orbital, the 3d orbitals need to be filled. You do not fill the 4d orbitals until the 5s orbital is filled.
Here is a quick review of the order orbitals need to be filled in:
1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p;
s holds 2 electrons; p holds 6 electrons; d holds 10 electrons; f holds 14 electrons.
Write the chemical formula for the following: silver cyanide
Answer:
AgCN
Explanation:
Ag+C=N
The simple representation of a compound showing the ratio of elements is the___ formula.
Answer:
Chemical formula
Explanation:
because chemical formulas use chemical elements , symbols , and numbers to present information about the chemical proportions.
how many unpaired electrons does calcium have
Answer:
0
Explanation:
The number of unpaired electrons in is 0
Answer:
4 unpaired electrons
Explanation:
becausd it have 4 unpaired electros it is paramagnetic
(earth science not chem!!) What branch of Earth Science deals with stars and galaxies beyond Earth?
Answer:
The answer is Astronomy.
Explanation: Astronomy is the study of objects beyond the Earth’s atmosphere
what is the molecular equation to AgNO3 (aq) + H2S(aq)?
There are two forms of chemical equations
Ion equation: written in ion form (as separated ions) which forms the net ionic equation after removing an ion spectator
Molecular equation: written in molecular form
2AgNO₃(aq) + H₂S(aq) ⇒ Ag₂S(s) + 2HNO₃(aq)
The above reaction can be included in a double replacement reaction⇒ an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product
It can be shown the existence of the precipitation reaction, which is the formation of insoluble Ag₂S (not dissolve)
What volume is occupied by 0.34 moles of Helium gas?
Answer:
I will assume that you mean
STP (Standard Temperature and Pressure)
21
3
≈
7 L
Explanation:
Since we know that
1 mole
of an ideal gas occupies
22.4 L
at
STP
then can establish the following relationships:
22.4 L
1 mole
or
1 mole
22.4 L
Knowing that, we can solve for the volume occupied by the helium gas,
0.35
mole
1
⋅
22.4 L
1
mole
=
7.84 L
as
7.84 L
−
−
−
−
−
The answer makes sense because if
1 mole
occupies
22.4 L
, then
0.35 moles
(roughly a third of the moles) will occupy a third of
22.4 L
(
if we round down 22.4 L to 21 L
)
−
−
−
21
3
≈
7 L
The volume occupied by 0.34 moles of Helium Gas is 7.62 L.
What is a noble gas ?Any gas from the group of rare gases that include helium, neon, argon, krypton, xenon, and usually radon and that exhibit great stability and extremely low reaction rates. — called also inert gas.
They have properties tending to an ideal gas.
It is asked that what volume will be occupied by 0.34 moles Helium Gas
The ideal gas equation is written as
PV = nRT
At STP , T = 273 K
P= 1atm
R = 0.0821 L(atm) mol⁻¹K⁻¹
Substituting the values
1 * V = 0.34 * 0.0821 * 273
V = 7.62 L
Therefore the volume occupied by 0.34 moles of Helium Gas is 7.62 L.
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Question
Which two of these options does the transfer of light energy require?
A. Magnetic fields
B.Electric fields
C. Gravitational forces
D. Geometric figures
Answer: A,B
Explanation:
Answer: A. Magnetic fields
B. Electric fields
Explanation:
What is the correct chronological order of scientists contributing to the modern periodic table?
1. Lavoisier, Newlands, Moseley, Dobereiner, and Mendeleev
2. Lavoisier, Dobereiner, Newlands, Mendeleev, and Moseley
3. Moseley, Mendeleev, Newlands, Dobereiner, and Lavoisier
Answer:
the second one-Lavoisier, Dobereiner, Newlands, Mendeleev, and Moseley
Answer:
Lavoisier, Dobereiner, Newlands, Mendeleev, and Moseley
Explanation:
Edge 2021
In part of which layer does heat flow by convection?
I think is inner core but I am not sure about it
Answer:
the mantle because it's just built different
I WILL GIVE U BRAINLIEST!!!!!!
Which sentence uses pasteurize correctly?
The painter must pasteurize the scene in pastel colors.
The cows were put in the field to pasteurize.
They pasteurize the juice to make it safe to drink.
We decided to pasteurize the documents for safekeeping
Answer: C
Explanation: They pasteurize the juice to make it safe to drink.
The sentence which uses pasteurization correctly is that they pasteurize the juice to make it safe to drink.
What is pasteurization?Pasteurization or pasteurisation is a process of food preservation in which packaged and non-packaged foods (such as milk and fruit juices) are treated with mild heat, usually to less than 100 °C (212 °F), to eliminate pathogens and extend shelf life. The process is intended to destroy or deactivate microorganisms and enzymes that contribute to food spoilage or risk of disease, including vegetative bacteria, but most bacterial spores survive the process.
The process is named after the French microbiologist Louis Pasteur whose research in the 1860s demonstrated that thermal processing would deactivate unwanted microorganisms in wine.Spoilage enzymes are also inactivated during pasteurization. Today, pasteurization is used widely in the dairy industry and other food processing industries to achieve food preservation and food safety.
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how many minutes are in 9,040 ms
Answer:
0.15066667
I tried, hope this helps :)
Which of the following best describes the impact of glaciers upon the surface of the earth?
a.
Ice buried continents under a few hundred feet of ice.
b.
Glaciers scraped across the surface and altered landscapes and the course of rivers.
c.
The passage of glaciers created new ecosystems.
d.
All of the above.
Answer:
New Answer is : B - Glaciers scraped across the surface and altered landscapes and the course of rivers.
Explanation:
Edge 2020
The impact of glaciers on the surface is that glaciers scraped across the surface and altered landscapes and the course of rivers.
What is a glacier?A glacier refers to a heap of ice that has stayed there for a large number of years. The earth is filled with many glaciers and about 90% of fresh water are trapped in glaciers.
The impact of glaciers on the surface is that glaciers scraped across the surface and altered landscapes and the course of rivers.
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Compare and Contrast Iced Tea, Salad Dressing
Answer:
dressing is for salad and tea is a drink but the are both liquids and brown
The factors in a experiment that do not change
Answer:
The answer is Constant.
Select the substance or substances that are homogeneous mixtures
Solution
Compound
Colloid
Molecule
Suspension
Answer:
1 3 6 ones
Explanation:
Answer
Solution Compound Colloid
Explanation:
Which of the following is not a physical property of a rock?
A. luster
B. electrical conductivity
C. melting point
D. density
Answer:
B
Explanation:
electrical conductivity of a rock cannot be determined by merely looking at the rock
What is the relationship between the kinetic energy of molecules in a solid and a liquid? Justify your response in two or
more complete sentences.
LEDE
Answer:
In solid the molecules are soo close so tht cant move and also have bonds but in liquid molecules are far and move so thats y liquid don has its own shape
Answer:
In solid the molecules are soo close so tht cant move and also have bonds but in liquid molecules are far and move so thats y liquid don has its own shape
Explanation:
the electron config for 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3
Answer:
I don't understand what you are asking
Julie tears a piece of notebook paper. This is a(n) _____.
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains the situation?
Answer:
Newton's Second Law
Explanation:
Newton's second law of motion states that the acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
(I'm going to assume this is an option, but please let me know if it's not!)
kinetic energy is energy that an object possesses because of its
Answer:
Explanation:
Kinetic energy is the energy possessed by an object due to its motion. If an object is moving, then it has kinetic energy. If an object has kinetic energy, then it is moving. Many students confuse kinetic energy with potential energy.
At $2.186/gallon, how many pennies would it cost to buy 125 L of gasoline? (1 gallon =
128 oz, 1 oz= 29.6 mL)
PLS HELPPPP
Answer : The cost of pennies to buy 125 L of gasoline would be, $71.92
Explanation :
As we are given that the cost to buy gasoline is $2.186/gallon.
Now we have to determine the cost to buy 125 L of gasoline.
First we have to convert 125 L into gallon.
Conversion used:
(1 gallon = 128 oz, 1 oz= 29.6 mL, 1 mL = 0.001 L)
As, 1 L = 1000 mL
So, 125 L = 125000 mL
and,
As, 29.6 mL = 1 oz
So, 125000 mL = [tex]\frac{125000mL}{29.6mL}\times 1oz=4222.9oz[/tex]
and,
As, 128 oz = 1 gallon
So, 4222.9 oz = [tex]\frac{4222.9oz}{128oz}\times 1\text{ gallon}=32.9\text{ gallon}[/tex]
Now we have to determine the cost to buy 125 L of gasoline.
As, the cost of 1 gallon of gasoline = $2.186
So, the cost of 32.9 gallon of gasoline = $2.186 × 32.9
= $71.92
Therefore, the cost of pennies to buy 125 L of gasoline would be, $71.92
Which of the following is a covalently bonded molecule?
A) CI2
B) air
C) Ne
D) salt
Answer:
D:salt this is the correct answer
Which of the aforement unique characteristics of earth do you like the most and why?
Answer:
The Earth rotates on its axis at a constant tilt.
Earths rotation on its axis at a constant tilt provides seasonal changes in the different part of the country. This resulted to the distribution of the heat of the sun from northern hemisphere and to southern hemisphere. Making areas with hot temperature may experience rainy season in a year. This will help production of crops or food supply and water supply available for living organism.
If the Earth's rotation is not tilted, then both the northern hemisphere and southern hemisphere will be covered with thick ice sheet. The equatorial region or near the equatorial region will experience tremendous warm temperature. Making our life on Earth not ideal for living.
Magnetic Field
Earth is protected by the magnetic from the dangerous radiation coming from the heat of the sun.
Water and oxygen
These two elements are essential for living organism in order to survive. The existence of waters proves that Earth temperature is conducive for living.
What are the basis of making symbols????
Answer:
1/ Using the first letter of the name of the elements.
2/ If the name of two or more elements begins with the same letter,the second letter of their name is also taken with first letter.
3/ Symbols are made by using the letters of the name of elements in other languages also.