Answers
Related Questions
A gas at 127 celsius and 10.0 L expands to 20.0 L. What is the new
temperature in kelvin? (You must convert to Kelvin before calculating
this problem
Answers
Answer:
T₂ = 800 K
Explanation:
Given that,
Initial temperature of the gas, T₁ = 127°C = 400 K
Initial volume, V₁ = 10 L
Final volume, V₂ = 20 L
We need to find the new temperature.
The volume of a gas is directly proportional to its Kelvin temperature.
Let T₂ is the new temperature. So,
[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}\\\\T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{20\times 400}{10}\\\\T_2=800\ K[/tex]
So, the new temperature of the gas is 800 K.
If an ionic compound formed between an element from the first column of the periodic table and another from the sixteenth column, you would expect the compound to include W 0 A two atoms of the element from the first column and one atom of the element from the sixteenth column. O B. one atom of the element in the first column and two atoms of the element from the sixteenth column. O C three atoms of the element from the first column and two atoms of the element from the sixteenth column. OD one atom from each of the two different elements.
Answers
Answer:
A. two atoms of the element from the first column and one atom of the element from the sixteenth column.
Explanation:
If an ionic compound formed between an element from the first column of the periodic table and another from the sixteenth column, you would expect the compound to include two atoms of the element from the first column and one atom of the element from the sixteenth column.
The periodic table is arranged in rows and columns. The rows are periods while the columns are groups.
The first column of the periodic table contains elements that form univalent ions hence they have a valency of 1. The elements in the sixteenth column usually form divalent negative ions and have a valency of 2.
An example of an element of the first column is sodium while an example of an element of the sixteenth column is sulphur.
During ionic bond formation, there is an exchange of valency such that the formula of a compound formed between sodium and sulphur is Na2S.
Therefore, when an ionic compound formed between an element from the first column of the periodic table and another from the sixteenth column, you would expect the compound to include two atoms of the element from the first column and one atom of the element from the sixteenth column.
Learn more: https://brainly.com/question/13178080
How many moles are in a 4.5g of Sulfur?
Answers
Answer:
~0.14
Explanation:
There are roughly ~0.14 moles in 4.5g of Sulfur. 1 mol = 32.06 g of Sulfur, so we just find the ratio and then multiply.
Answer:
[tex]\boxed {\boxed {\sf About \ 0.14 \ mol \ S }}[/tex]
Explanation:
To convert from grams to moles we must use the molar mass. This can be found on the Periodic Table.
Sulfur (S); 32.07 g/molWe can use this number as a ratio or fraction.
[tex]\frac{ 32.07 \ g \ S }{1 \ mol \ S }[/tex]
Multiply by the given number of grams: 4.5
[tex]4.5 \ g \ S *\frac{ 32.07 \ g \ S }{1 \ mol \ S }[/tex]
Flip the fraction so the grams of sulfur cancel.
[tex]4.5 \ g \ S *\frac{1 \ mol \ S }{32.07 \ g \ S}[/tex]
[tex]4.5 *\frac{1 \ mol \ S }{32.07 }[/tex]
[tex]\frac{4.5 \ mol \ S }{32.07 }[/tex]
[tex]0.140318054 \ mol \ S[/tex]
The original measurement of grams had 2 significant figures, so our answer must have the same. For the number we calculated, that is the hundredth place.
The 0 in the thousandth place tells us to leave the 4.
[tex]0.14 \ mol \ S[/tex]
There is about 0.14 moles of sulfur in 4.5 grams.
What was the atomic mass of Lithium?
Answers
Answer:
Lithium/Atomic number
3
Explanation:
Symbol: Li
Electrons per shell: 2,1
Atomic number: 3
Atomic mass: 6.941 u
Electron configuration: [He] 2s1
Atomic radius: 152 pm
Van der Waals radius: 182 pm
this is the AK steel plant near us. Which fossil fuel is used to melt and refine the iron into steel?
Answers
Answer:
The AK steel plant is in Coshocton County,Ohio. The fossil fuel used to melt and refine Iron into steel is COAL.
Students are completing an investigation on types of heat transfer. For one part of the investigation, they place their hand on a cool window and feel the difference in thermal energy. When they are touching the glass, what type of heat transfer are they experiencing?
a .Conduction
b. Convection
c. Radiation
Answers
The products of a neutralization reaction are an acid and a base. (i need to rewrite the statement and make it true.)
Answers
Explanation:
neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products. In a neutralization reaction, there is a combination of H+ ions and OH– ions which form water.
In chemistry, neutralization or neutralisation is a chemical reaction in which acid and a base react quantitatively with each other. In a reaction in water, neutralization results in there being no excess of hydrogen or hydroxide ions present in the solution.
Calculate the molarity for a solution containing 0.34 moles of NaNO3 dissolved in 0.5 liter of
water.
Answers
Answer:
0.68 mol/L
Explanation:
M=m/l
m is moles and l is liters
Since they gave us the values in the correct units, all we have to do it plug it in
M=0.34 mol/0.5 liters
M=0.68
what is an acid containg oxygen?
Answers
Explanation:
An oxyacid, oxoacid, or ternary acid is an acid that contains oxygen. Specifically, it is a compound that contains hydrogen, oxygen, and at least one other element, with at least one hydrogen atom bonded to oxygen that can dissociate to produce the H+ cation and the anion of the acid.
Answer:
oxyacid, oxoacid
Explanation:
An oxyacid, oxoacid, or ternary acid is an acid that contains oxygen. Specifically, it is a compound that contains hydrogen, oxygen, and at least one other element, with at least one hydrogen atom bonded to oxygen that can dissociate to produce the H+ cation and the anion of the acid.
What will a beam of light do if it is shot at the gelatin?
Answers
Answer: A stream of tennis balls striking a concrete wall will exhibit total reflection while a laser beam of light striking the same wall will be scattered in all directions.
Explanation:
Examine the statement.
If a scientist observes ice cream melting into a creamy puddle, the scientist is
observing a physical change.
Determine whether the statement is true or false. If false, explain why it is false,
Answers
When kci dissolved in ethanol what is the intermolecular attraction between k+ ions and ethanol molecules
Answers
Answer:
ion-dipole interaction
Explanation:
Ethanol is a polar molecule due to the presence of the polar O-H group in the molecule. This means that the molecule has a dipole moment.
The positive end of the dipole lies on hydrogen while the negative end of the dipole lies on oxygen.
When KCl is dissolved in ethanol, K^+ ions can interact with the negative end of the dipole in ethanol by ion-dipole interaction.
What do you know about a substance if you know it’s temperature?
Answers
Answer:
A. How hot or cold the substance is.
Explanation:
If we know the temperature of the substance
we can know how hot or cold the substance is.
And as we know temperature is the degree of hotness or coldness of a body.
(due tonight pls help)
In science, does acceleration happen when an object is slowing down?
(PLS make this answer simple to understand)
Answers
Answer:
I think the answer is yes and here is my explanation.
Explanation:
According to our principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity. Thus, the object has a negative acceleration.
Will mark brainiest!!!! Also I posted other questions
Answers
Answer:
Crash sensors measure how quickly a vehicle slows down in a frontal crash or accelerates to the side in a crash Some vehicles are equipped with a sensing system designed to detect the onset of a rollover crash Rollover crash sensors may be located in the ecu or at the center of the vehicle
The the Crash trip sensors in cars that send an electric signal to an ignitor The heat generated causes sodium azide to decompose into sodium and nitrogen gas which inflates the airbags
Explanation:
have a nice day
What two major Southeastern U.S. cities will be underwater if sea level
rose 6 feet?
Answers
Answer:
Rising sea levels would be devastating in North Somerset, with large parts of Clevedon, Weston-super-Mare and Burnham all being underwater by 2050 according to Climate Central
Explanation:
Oddly shaped bones like your vertebrae and pelvis? a.irregular bones c. short bones b. flat bones d. long bones
Answers
Which substance contains particles held together by metallic bonds? A) N2(s) B) Ni(s) C) I2(s) D) Ne(s)
Answers
Answer:
B) Ni(s)
Explanation:
The question inquires which of the substances listed in the options is composed of the metallic bond. This means that we have to carefully consider the options and identify which of them is a metal. Clearly, only Ni(s) is a metal.
Metallic bonds result from the electrostatic attraction between metal cations and delocalized electrons. The nature of metallic bonding accounts for many of the physical properties of metals, such as conductivity and malleability(Khan Academy).
What is the source of substances that are not natural resources
Answers
Answer:
A nonrenewable resource is a substance that is being used up more quickly than it can replace itself. Its supply is finite. Most fossil fuels, minerals, and metal ores are nonrenewable resources. Renewable resources such as solar and wind power and water are unlimited in supply.
Explanation:
Hope it is helpful....
When two additional electrons are required to follow the octet rule a ____________ bond is created
Answers
Answer
o double covalent bond is cteated.
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Help plssss this is due in 3 hours
Answers
You can calculate speed by dividing distance and time
And you can solve acceleration by dividing time by distance
Is carbon dioxide in the atmosphere beneficial or detrimental to the environment?
Answers
Answer:
Carbon dioxide is essential to the survival of plants and animals. Too much, however, can cause all life on Earth to die. Not only do plants and animals need to ingest carbon dioxide, but they also rely on the gas to keep them warm, as it is an essential component to Earth's atmosphere.
Answer:
Yes
Explanation
Carbon dioxide is essential to the survival of plants and animals. Too much, however, can cause all life on Earth to die. Not only do plants and animals need to ingest carbon dioxide, but they also rely on the gas to keep them warm, as it is an essential component to Earth's atmosphere.
out me in brainlesttt
brainlist and 50 points
Answers
boğh ye slk yaw
kendin çoz lna
Answer:
c
Explanation:
Why are poisons used less today than they were in the past? What factors influenced this change.
Answers
Answer:
Poisons are used less today than they were in the past because forensic scientists can easily detect many substances and toxins during an autopsy.
The main factor that influenced this change is advancements in forensic toxicology knowledge and technology.
good luck, i hope this helps :)
Explanation:
Today poisons are used less because forensic scientists now have much more equipment and have an easier time at identifying poisons like arsenic, which were not so easy to find in the past. The main factor influencing this change is the new technology and knowledge that was unavailable in the past.
Balance Na + SO3 = Na2SO3
Answers
Na = 1
SO3 = 1
Na2SO3 = 1
Na = 2
SO3 = 1
Na2SO3 = 1
I hope this helps!!
How many atoms of oxygen are in a molecule
of
glucose (C6H1206)?
Be sure to use the correct place value.
Answers
Answer:
Um... 6
Explanation:
C6H12O6
The O is oxygen and the 6 is the exact number of atoms
Iron combines with 5 g of Copper (1) Nitrate to form 6.01 g of Iron (1) Nitrate and 0.4 g of copper
metal. How much Iron was required to complete this reaction?
Answers
Then, to get the mass of Iron required, you would do 6.41 - 5.0 = 1.41
This is because in the conservation of mass principle it states,
mass of reactants = mass of products.
nitrogen and chlorine is less polar than a nitrogen oxygen bond
true or false
Answers
Answer:
Nitrogen and chlorine have similar electronegativities, making individual N-Cl bond essentially non-polar. therefore its true
Explanation:
The figure shows a group in the periodic table. What is the name of this group of elements? Group of answer choices metalloids halogens noble gases
Answers
Answer:
halogens
Explanation:
on a periodic table (just search ptable.com) right under the 17 in small words it says halogens
Rain gauges can be used to measure precipitation.
O True
O False