A particle that orbits the nucleus in an atom is called an
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Good Morning
Answer : A particle that orbits the nucleus in an atom is called an Electron
Hint : Electron, negatively charged particle orbiting the nucleus. Same number as protons in neutral atoms
I hope that's help !
Happy Sunday :)
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The main energy products currently being obtained from the ocean floor are oil and _____.
The compound known as butylated hydroxytoluene, abbreviated as BHT, contains carbon, hydrogen, and oxygen. A 1.376 g sample of BHT was combusted in an oxygen rich environment to produce 4.122 g of CO 2 ( g ) and 1.350 g of H 2 O ( g ) . Insert subscripts to complete the empirical formula of BHT.
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Explanation:
Number of moles is defined as mass divided by molar mass of the substance or atom.
Mathematically, No. of moles =
It is known that molar mass of is 119.058 g/mol and number of moles is given as 2.25 mol.
Therefore, calculate mass of as follows.
No. of moles =
2.25 mol =
mass = 267.88 g
Thus, we can conclude that mass of 2.25 moles of manganese(lv) sulfide(MnS2) is 267.88 g.
Final answer:
The mass of 2.25 moles of Manganese (V) Sulfide (MnS2) can be calculated by multiplying the molar mass of MnS2 (119.08 g/mol) by the number of moles (2.25). The result is approximately 267.93 grams.
Explanation:
The question asks about the mass of 2.25 moles of manganese (V) Sulfide (MnS2). We can calculate this using the molar mass of MnS2. The molar mass of manganese (Mn) is approximately 54.94 g/mol, and the molar mass of Sulfur (S) is approximately 32.07 g/mol. To find the molar mass of MnS2 we add up the molar mass of Mn and twice the molar mass of S (because we have 2 S atoms). Therefore the molar mass of MnS2 = 54.94 + 2*(32.07) = 119.08 g/mol. To find the mass in grams, we multiply this molar mass by the number of moles. Hence, the mass of 2.25 moles of MnS2 = 2.25 * 119.08 = 267.93 grams.
Learn more about Molar Mass here:
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H20(g)
1. Balance the equation above by putting coefficients into each blank space.
1C5H12+ 8O2----- 5CO2+ 6 H2O (this is what I got)
2. How many atoms of oxygen are in 144 grams of pentane?
step 1: 144g of C5H12*(1mole/72.17)= 1.995moles of C5H12
step 2: 1.995moles of C5H12*(8moles of O2/1mole of C5H12)= 15.962 moles of O2
step 3: 15.962 moles of O2*(6.02*10^23 atoms of O2/1mole of O2)= 9.609*10^24 atoms of O2 (I don't know if I did this right)
3. How many atoms of oxygen are in 192 grams of carbon dioxide gas?
step 1: 192 grams of CO2 *(1mole of CO2/44.01grams of CO2)= 4.363 moles of CO2
step two: 4.36moles of CO2* ( 1 mole of O2/1mole of CO2)=
step 3: 4.363* (6.02*10^23) = 2.627*10^24 atoms of O2 (I don't know if this is correct.
4. A) CIRCLE ONE: True or False:
reactant you begin with fewer grams of is your limiting reactant.
B) If 32 g of oxygen gas and 32 g of pentane are combined, how much water will be produced, in moles? (Use your reaction from the top of the first page)
NEED HELP ASAP THANK YOU!!!
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2) Step 1: Moles=Mass/Mr, so it's 144/72= 2mol
Step 2: Stoichiometry means the ratio of oxygen to pentane is 1:8 so moles of oxygen is moles of pentane times 8. 2*8=16mol of oxygen
Step 3: 16= 9.6*10^24
3) The ratio of oxygen to carbon in CO2 is 1:2
so it's 192/3 = 64
64*2=128g
Moles = Mass/Mr = 128/32 = 4mol = 2.41*10^24 atoms of oxygen
Basically you needed to work out the mass of oxygen using ratios before using a moles equation instead of just working with moles
4) True
5) 1C5H12+ 8O2----- 5CO2+ 6 H2O
32g 32g
Moles of oxygen = Mass/Mr = 32/32= 1mol so you'd need 0.125mol of pentane to react fully
Moles of pentane= Mass/Mr = 32/72=0.4mol so you'd need 3.2mol of oxygen to react fully
This makes oxygen the limiting factor, because you need more of it to react fully with the pentane, so we use oxygen
Stoichiometry means for every 8mol of oxygen there's 5mol of CO2
So, 1/8*5=0.635mol of CO2
Answers
2H2 + O2 ⇒⇒ 2H2O
to move?
Select one:
0 The weight of the box is less than the force of friction.
O
The weight of the box is greater than the force of friction.
The applied force is greater than the force of friction.
O
The applied force is less than the force of friction
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Answer:
the applied force is less than the force of friction.
Explanation:
Answers
Answer: Na⁺, SO₄ ²⁻.
Justification:
This is just a part of a bigger question.
But the instructions are complete to construct the ions.
The first ion requested is the sodium ion.
The symbol of sodium is Na.
When an electron is removed from the neutral atom, the atom wil result with an excess of protons, which translates onto an excess of positive charge.
Then, to show the new particle you must add a positve sign (+) in the form of superscript.
That is why you write Na⁺. By the way, a positive ion is named cation.
Regarding sulfate ion, it comes from the sulfuric acid, when you remove the two hydrogen atoms, each with a positive charge, then the sulfate ion will stand with a negative charge of 2.
The charge is told to belong to the entire ion, not a particular atom, soy you wirte it with the 2- symbol as a superscript for the entire species:
SO₄ ²⁻. A negative ions is called anion.
The answer, then, is: Na⁺, SO₄ ²⁻.
Writing the ion: Na⁺,SO₄²⁻
Further explanation
Ionic compounds consisting of cations (ions +) and anions (ions -)
The naming is preceded by the cation then the anion with the -ide suffix added
Generally for this ion compound consists of metal elements as cations and non-metals as anions
Metal: cation, positively charged.
Nonmetal: negative anion.
The anion cation's charge is crossed
Example:
Fe₂S₃
Fe charge = 3+
S charge = 2-
The writing of the ionic charge is placed as a superscript behind the molecule/ atom, and the number is written before the positive or negative sign. For a single charge, there is no need to write the number
Example
Cl⁻ (single charge)
Mg²⁺ not Mg⁺²
For the element Na symbol which is group 1A and releases one electron, the symbol writing would be: Na⁺(single charge)
For polyatomic ions, the superscript charge is written after the subscript on the polyatomic element, so it becomes SO₄²⁻
These two ions when combined and bind to Na₂SO₄ (The anion cation's charge is crossed)
if written separately as Na⁺, SO₄²⁻
Learn more
the chemical formula for each ionic compound.
two functional groups that contain ionic charges
Binary ionic compounds
Keywords: chemical compound, the naming of chemical compounds
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- The materials is being build up throughout time in the lake or sea, causing its salinity to increase
- when this saline solution is evaporated, the ions in the water precipitate, forming an evaporite
Sediments are buried, pressure increases, volume of sediment decreases, sandstone compresses, saline solution becomes evaporated,and thenforms an evaporite.
What is an evaporite?
An evaporite can be defined as a mineral deposit containing saline substances that are produced due to the evaporation of a water body.
In this context, the sequence of events in the formation of an evaporite are listed as follows:
- Sediments are buried.
- Increase pressure pushes the grains closer together.
- Decrease in the volume of sediment, which cause fluids between the grains to be squeezed out.
- Sandstone are left tightly compressed together.
- The saline solution becomes evaporated, and then the ions contained in the water precipitates, forming an evaporite.
Read more on evaporite here: brainly.com/question/506772
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