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Answer:
my answer is measuring cylinder
Related Questions
CAN SOMEONE PLEASE HELPP????!!!
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Answer:
Number of Particles Outside Nucleus 48
Number of Particles Inside Nucleus 84
How many oxygen atoms are there in 98.4g of oxygen gas. Hint: oxygen gas just might be diatomic! Be warned that on a test you will NOT be told if an element is diatomic. You need to memorize the diatomic elements.
Answers
Answer:
3.702×10^24 atoms of Oxygen.
Total, 6.15 moles of oxygen atoms in 98.4g of oxygen gas (O₂), which is equivalent to 6.15 × 6.022 × 10²³ (Avogadro's number) oxygen atoms.
Oxygen gas (O₂) is indeed diatomic, meaning it exists as a molecule with two oxygen atoms bonded together.
To calculate the number of oxygen atoms in 98.4g of oxygen gas (O₂), we need to use the molar mass of oxygen and the given mass.
The molar mass of oxygen (O₂) will be 32.00 g/mol.
Number of moles of oxygen gas = Mass (g) / Molar mass (g/mol)
Number of moles of oxygen gas = 98.4 g / 32.00 g/mol
≈ 3.075 moles
Since each molecule of oxygen gas (O₂) contains two oxygen atoms, the number of oxygen atoms will be twice the number of moles of oxygen gas.
Number of oxygen atoms = 2 × Number of moles of oxygen gas
Number of oxygen atoms ≈ 2 × 3.075 moles
≈ 6.15 moles
Therefore, there are approximately 6.15 moles of oxygen atoms in 98.4g of oxygen gas (O₂), which is equivalent to 6.15 × 6.022 × 10²³ (Avogadro's number) oxygen atoms.
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Someone help me please i’ll give brainly
Answers
Answer:
Melting
Explanation:
Can anyone help please?
Answers
Answer:
cytsdfywty ++=
Explanation:
V-pneumonoultramicroscopicsilicovolcanoconiosis
!⚠️⚠️⚠️⚠️⚠️⚠️⚠️!25 POINTS ANSWER ASAP PLEASE!! ⚠️ ⚠️⚠️⚠️⚠️⚠️⚠️⚠️
Choose either a tree or a bear and explain how it obtains energy, interacts with the environment, and reproduces? (AT LEAST 4 SENTENCES)
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Answer:
trees collect energy from sitting in the sun, the interact with their enviorment because they provide oxygen, and they reproduce when their fruit flowers or leaves fall off.
Explanation:
I made a bear....
Answers
where is the bear i wanna see it!!! it didnt pop up.
The chemical formula of glucose isC6H12O6. What are the names of the elements glucose, and how many atoms of each element are present in a glucose molecule?
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Answer:
A glucose molecule is made up of 6 Carbon atoms, 12 Hydrogen atoms, and 6 Oxygen atoms. This is a 1:2:1 ratio. Hopefully, this helps!
Explanation:
I don't understand my science usatestprep
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Answer:
OH NO
Explanation:
Just try you best to that's what I do!
Answer: i no rite i dont ether
Explanation:
hi can someone help me with these 2 :)
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Answer:
a and d
Explanation:
An iron atom has an atomic mass of 56 its atomic number is 26 how many neutrons does noes iron atom have
Answers
Answer:
Is 30
Explanation:
You have to minus de 56 with the 26
When the following equation is balanced, the coefficients are __________. Al(NO3)3 + Na2S → Al2S3 + Na(NO3)
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Coefficients: 2, 3, 1, 6
The balanced coefficients in the reaction are now; 2, 3, 1, 3.
A balanced chemical reaction equation is one in which the number of atoms of each element on the right hand side of the reaction equation is equal to the number of atoms of the same element on the left hand side of the reaction equation.
For the reaction show, the balanced reaction equation is; 2Al(NO3)3 + 3Na2S → Al2S3 +3 Na(NO3). The balanced coefficients in the reaction are now; 2, 3, 1, 3.
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The Lyman series results from excited state hydrogen atoms transiting to
the ground state by emitting electromagnetic radiation.
a. In total, how many spectral lines will result if a sample of hydrogen is excited into the fourth
excited state? (Hint: draw a small energy level diagram and use arrows to represent
transitions from higher to lower energy states.
b. How many of the lines from the previous answer belong to the Lyman series?
c. Calculate the energy for each of the lines in the Lyman series that you identified in the last
answer. (Recall that the energy of the light emitted represents the difference between two
energy states of the atom.)
Answers
Answer:
I can't draw diagrams on this web site but I can do with numbers I think. So an electron is moved from n = 1 to n = 5. I'm assuming I've interpreted the problem correctly; if not you will need to make a correction. I'm assuming that you know the electron in the n = 1 state is the ground state so the 4th exited state moves it to the n = 5 level.
n = 5 4th excited state
n = 4 3rd excited state
n = 3 2nd excited state
n = 2 1st excited state
n = 1 ground state
Here are the possible spectral lines.
n = 5 to 4, n = 5 to 3, n = 5 to 2, n = 5 to 1 or 4 lines.
n = 4 to 3, 4 to 2, 4 to 1 = 3 lines
n = 3 to 2, 3 to 1 = 2 lines
n = 2 to 1 = 1 line. Add 'em up. I get 10.
b. The Lyman series is from whatever to n = 1. Count the above that end in n = 1.
c.The E for any level is -21.8E-19 Joules/n^2
To find the E for any transition (delta E) take E for upper n and subtract from the E for the lower n and that gives you delta E for the transition.
So for n = 5 to n = 1, use -Efor 5 -(-Efor 1) = + something which I'll leave for you. You could convert that to wavelength in meters with delta E = hc/wavelength. You might want to try it for the Balmer series (n ending in n = 2). I think the red line is about 650 nm.
Explanation:
Temperature depends on the average kinetic energy of the particles in a sample. How does this help explain why a plasma-based light does not have a high temperature? No particles in the plasma have high kinetic energy. The fastest particles have the greatest mass. Most particles in the plasma are heavy, slow, and very low density. The fastest particles transfer most of their energy through collisions.
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Answer:
C: Most particles in the plasma are heavy, slow, and very low density.
Explanation:
i'm smart like dat
Answer:
C is correct
Explanation:
Fill the table for Ionic/Covalent bonds for each substance, I already filled the rest out on another table.
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Answer:
Covalent covalent ionic ionic
Explanation:
The bonding of metals and _______________ does not involve the ____________________ of electrons.
a
nonmetals, sharing
b
metalloids, transfer
c
nonmetals, transfer
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The bonding of metals and non metals does not involve the sharing of electrons. The correct option is option A. There are two types of bonding, covalent bonding and ionic bonding.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
There are two types compound one is covalent compound and other is ionic compound. Covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron.
The bonding of metals and non metals does not involve the sharing of electrons. when metal and non metals combine then there is transfer of electrons from metals to non metals.
Therefore, the bonding of metals and non metals does not involve the sharing of electrons. The correct option is option A.
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For each balanced reaction, indicate the total number of molecules in the table below.
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Make ammonia : 4,2
Separate water : 2,3
Combust methane : 3,3
Further explanationMaybe the full questions can be seen in the attached picture
Reaction 1 : Make Ammonia
N₂+3H₂⇒2NH₃
molecules left : 1+3=4
molecules right :2
Reaction 2 : Separate Water
2H₂O⇒2H₂+O₂
molecules left : 2
molecules right :2+1=3
Reaction 3 : Combust Methane
CH₄+2O₂⇒CO₂+2H₂O
molecules left : 1+2=3
molecules right :1+2=3
NEED ASAP!!!
Sound energy travels by electromagnetic radiation.
True
False
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false
Explanation:
..................................................................
does boron or lithium have a greater first ionization energy ?
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Answer:
beryllium has a higher ionization energy because its radius is smaller. boron has a higher ionization energy because its radius is smaller.
As a 7 inch candle burns down, its height decreases 1/2 inch each hour. How many hours does it take for the candle to burn completely?
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Answer:
14
Explanation:
Answer:
As a 7-inch candle burns down, its height decreases 1/2 inch each hour. How many hours does it take for the candle to burn completely?
Explanation:
It would be 14 because the candle is 7 inches and it loses 1/2 inch each hour.
Pure substances are _______ and _______.
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Answer: Pure substances are substances that are made up of only one kind of particle and have a fixed or constant structure.
Hope this helps! :)
In your own words, please describe the difference between a complete ionic equation and a net ionic equation.
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Explanation:
In the molecular equation for a reaction, all of the reactants and products are represented as neutral molecules (even soluble ionic compounds and strong acids). In the complete ionic equation, soluble ionic compounds and strong acids are rewritten as dissociated ions.
The net ionic equation is a chemical equation for a reaction that lists only those species participating in the reaction. The net ionic equation is commonly used in acid-base neutralization reactions, double displacement reactions, and redox reactions.
Sponges reproduce using:
A mitosis
B budding
C sexual reproduction
Answers
Answer:
It is B. Budding
Explanation:
Hope this helped have an amazing day!
Water has a higher boiling point than expected because what?
Answers
Answer:
Water has strong hydrogen bonds between molecules. These bonds require a lot of energy before they will break. This leads to water having a higher boiling point than if there were only weaker dipole-dipole forces. Water also has a high specific heat.
Explanation:
Hope this helped it is what I could find!
Answer: Water has a higher boiling point than expected because hydrogen and oxygen form single covalent bonds. Molecules of water is bound together by strong attractions which needs high energy to break resulting to a higher boiling point of water than most substances.
Explanation: Water has strong hydrogen bonds between molecules. These bonds require a lot of energy before they will break. This leads to water having a higher boiling point than if there were only weaker dipole-dipole forces. Water also has a high specific heat.
What units are used to measure mass and weight?
A. Mass and weight are measured in kilograms.
B. Mass and weight are measured in newtons.
C. Mass iş measured in kilograms, and weight is measured in newtons.
D. Mass is measured in newtons, and weight is measured in kilograms.
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Answer:
the answer is A, they are measured in kilograms
how many nitrogen atoms are present in 25.00 g in N2O5?
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Answer:
2.79 x 10²³atoms
Explanation:
Given parameters:
Mass of N₂O₅ = 25g
Unknown:
Number of atoms of Nitrogen present = ?
Solution:
To solve this problem, it is best to find the number of moles of nitrogen present in the sample first.
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of N₂O₅ = 2(14) + 5(16) = 108g/mol
Number of moles = [tex]\frac{25}{108}[/tex] = 0.23mol
1 mole of N₂O₅ contains 2 mole of N
0.23 mole of N₂O₅ will contain 0.23 x 2 = 0.46mole of N
1 mole of a substance = 6.02 x 10²³ atoms
0.46 mole of nitrogen = 0.46 x 6.02 x 10²³ atoms = 2.79 x 10²³atoms
what are the advantages of the SI system?
Select all that apply.
1.It is easy to change from one unit to another.
2.It allows scientists to compare experimental results.
3.It is based on inches and pounds.
4.All its units are based on the number 100
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Answer:
I believe the correct answers are 1 and 2
answer correctly for brainelist! :) pleaseee answer right i rlly need this
Answers
Answer:
I think its 1, but im not too sure
Answer: Location 1
Explanation: Can i have brainliest please
There is a sample of rock with a volume of 8 cm^3 and a mass of 20 g. What is its density?
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Answer:
156.07 lb/cu ft
Explanation:
At 20% efficiency, how many kWh would actually be produced from the 5 gal of gasoline? How
many BTUs of heat would be released from burning the gasoline?
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Answer:c. At 20% efficiency, how many kWh would actually be produced from the 5 gal of gasoline? How many BTUs of heat would be released from burning the gasoline? (3 points) 1.3 x 10 J x 1 kWH / 3.6 x 10 J = 36.1 kWh 5.2 x 10 J x 1 BTU / 1055 J = 492891 BTU 36.1 kWh would actually be produced from 5 gallons of gasoline.
Explanation:
I hope I help
Use the equation C3H8 + O2 → CO2 + H2O to answer the following question
How many moles of Propane (C3H8) are needed to produce 25 moles of carbon dioxide?
Answers
Answer:he final equation will be C3H8 + 502 ----> 3CO2 + 4H20.
Explanation:There will be 10 oxygens on the products side and 2 on the reactants so to balance these out, we multiply the 02 on the reactants side by 5. The final equation will be There will be 10 oxygens on the products side and 2 on the reactants so to balance these out, we multiply the 02 on the reactants side by 5. The final equation will be C3H8 + 502 ----> 3CO2 + 4H20.
