Answer:
1. How many atoms are in 6.5 moles of zinc? 6.5 moles. 6.02 x 10. 23 atoms = atoms. 3. Convert 2.35 moles of carbon to atoms. 2.35 moles 6.02 x 10. 23.
A meteor is moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013. Does this statement describe the meteors speed or velocity?
Answer:
it's describes the velocity. since a direction was specifically given, that means it is displacement, and displacement is to velocity while distance is to speed
Answer:
since a direction was specifically given, that means it is displacement, and displacement is to velocity while distance is to speed
Explanation:
If a balloon has a volume of 45.0 L and a temperature of 298 K and the temperature is increased to 328 K, what will be the new volume of the balloon?
Answer:
2
Explanation:
Ed. 2020
5
Use the equation Moles = Mass/Mołar Mass (Mr) to calculate the following: To make 3 moles of
Sodium (Na), how much mass do I need to weigh out?
A: 699g
B: 6.9g
C: 69g
D: 96g
Answer:
c
Explanation:
Molar mass of Na=23g/mol
amount of mole(n)=3
mass=?
therefore,n=m/M
3mol=m/23g/mol
m=23g/mol ×3mol
m=69g.
How many meters are in 21.5 km?
Answer:
21500m
Explanation:
Answer:
21, 500 meters
Explanation:
There are 1000 meters in a kilometer. Muliply 21.5 x 1000 to find this.
Hope it helps!
1. What is a food web?
A group of animals
a food chain with two levels
A producer and consumer relationship
how several food chains are related
Answer:
a producer and consumer relationship how several food chains and related.
Answer:
The answer is:
Explanation:
A food chain with two levels.
Hope this helps!!
❤️
:)
Which BEST describes the type of bonding that occurs in potassium chloride (CI)?
mostly ionic
O mostly covalent
metallic and ionic
O metallic and covalent
ASAP quick
Answer:
A. mostly ionic
Explanation:
Chemical bonding is the process that links elements together to form compounds
You have a 5-liter container with 1.30 x 1024 molecules of ammonia gas (NH3) at STP.
How many molecules of argon gas (Ar) are in an identical container at the same temperature and pressure?
1). 2.00 x 1023
molecules
2). 6.02 X 1024
molecules
3). 1.30 X 1024
molecules
4). 6.02 x 1023
molecules
Answer:
3). 1.30 × 10^(24) molecules
Explanation:
From avogadro's law which state that equal volume of all gases at the same temperature and pressure contain the same number of molecules.
We can relate it to this question as;
V₁/n₁ = V₂/n₂
Where;
V₁ is initial volume
n₁ is initial number of molecules
V₂ is final volume
n₂ is final number of molecules
Thus at STP, we have V₁ = V₂ and as such Plugging in the relevant values gives;
5/(1.30 x 10^(24)) = 5/n₂
n₂ = 1.30 x 10^(24) molecules
Answer:
1.30 X 1024 molecules
Explanation:
just took the test :D
have a miraculous day!!! <3
Classify the following as elements, compounds and mixtures
Brass, Gold, rainwater, Sodium chloride, distilled water, sugar solution,
copper, Sulphur dioxide, Aluminium oxide, muddy water
Plz i need fast ASAP
Answer:
Elements
Gold, copper
Compounds
Sodium chloride, Sulphur dioxide, Aluminium oxide,
Mixture
Brass, rainwater, distilled water, sugar solution,muddy water
Explanation:
How would an apple, potato, and onion all taste the same?
A) plugging your nose
B) Chewing on mint gum in intervals
C) eating them at the same time
Answer:
a
Explanation:
Answer:
a
Explanation:
what is unique about the intertidal coastline ?
Answer: The intertidal or littoral zone maintains a balance between the land and the sea. It provides a home to specially adapted marine plants and animals.
Explanation: The intertidal zone is the area where the ocean meets the land between high and low tides. A tide pool within Monterey Bay National Marine Sanctuary. Intertidal zones exist anywhere the ocean meets the land, from steep, rocky ledges to long, sloping sandy beaches and mudflats that can extend for hundreds of meters.
There are some climates in which there are no living things. true or false
Answer:
True
Explanation:
There are some climates in which there are no living things. The average of the weather is the climate.
What is climate ?Climate is a region's averaged long-term weather pattern over a period of time, usually 30 years. More precisely, it is the average and variation of climatic variables over a period of time that can range from a few months to many millions of years.
Every element of our life is impacted by the climate, including our food supplies, transportation systems, clothing choices, and vacation destinations. It significantly affects our future, our health, and our means of subsistence. Climate is the long-term trend of the weather in any given location.
As an illustration, you can anticipate snow in the Northeast in January or hot and muggy weather in the Southeast in July. Climate is this. Extreme values, such as record-breaking high temperatures or heavy rainfall, are also part of the climatic record.
Thus, there are some climates in which there are no living things.
To learn more about climate follow the link;
https://brainly.com/question/10440860
#SPJ2
30 points pls i need help
i need the right answer
Answer:
C
Explanation:
yes,
I NEED HELP FAST PLEASE
*please answer correctly*
Will mark brainliest thank you!!
Answer:
Explanation:
Using Charles Law ,
[tex]\frac{V1}{T1}=\frac{V2}{T2}[/tex]
Using this formula we have ,
V1= 200cm^3
T1=40+273.15 = 313.15 K
T2 = 100+273.15 = 373.15 k
V2= ?
Hence using above formula simplify it we will get ,
V2 = 238.3 cm^3
Answer:
i dont know that plzzz help me tooooo
How many atoms in 12 moles of oxygen
Answer:
7.23 x 10^24 atoms
Explanation:
Use Avogadro's number that states that there are 6.022 x 10^23 particles in one mole:
12 mol O x (6.022 x 10^23) atoms = 7.23 x 10^24 atoms
what is always made of the same combination of elements or compounds
PLZ HELP ILL GIVE BRAINLIEST!!!!
Answer:
1. electrical conductor
2. orbit
3. potential energy
4. magnetic field
5. net force
6. B; repulsion
7. A; copper
8. B; there is no gravitational attraction between you and the cup, but Earth's gravity is stronger, so Earth's gravity pulls the cup down
9. A; the net force is acting in an upward direction
10. A; position 1
11. A; the gravitational force between two objects depends on their masses
12. C; the chemical potential energy of the spring is greatest at position 4
13. C; hand-held compass
14. C; a person skiing down a hill
15. A; the ions will repel each other
16. A; position A
17. three properties of magnets are attraction because they attract certain materials, repulsion because magnetic poles repel, and directive because a magnet that is freely suspended will always point in a north-south direction.
18. to increase the strength of an electromagnet you can either increase the strength current or increase the number of windings.
i hope this helps :)
Which is a chemical property of sulphur?
A. It is a solid.
B. It is combustible.
O c. It is odorless.
D. It is yellow.
O E. It has density.
A, O and D
and its sulfur luv ♡ not sulphur
How would an apple, potato, and onion all taste the same?
A) plugging your nose
B) Chewing on mint gum in intervals
C) eating them at the same time
Answer:
A
Explanation:
Says it on the side of meh screen :P
(Ez question in lol)
5.25 x 10^32 atoms of K to grams
Answer:
3.40x10¹⁰ grams
Explanation:
First we convert 5.25x10³² atoms to moles, using Avogadro's number:
5.25x10³² atoms ÷ 6.023x10²³ atoms/mol = 88.72x10⁸ mol
Then we convert K moles to grams, using its molar mass:
88.72x10⁸ mol * 39 g/mol = 3.40x10¹⁰ g
So 5.25x10³² atoms of K would weigh 3.40x10¹⁰ grams.
Martha ran 420 m, and Cole ran 60 m less than Martha. The distance Kate ran is right in the middle of Martha and Cole's distances. How far did Kate run?
Answer:
390 m
Explanation:
Martha ran 420 m
Cole ran 60 m less than Martha = 420 m - 60 m = 360 m
The distance Kate ran is right in the middle of Martha and Cole's distances
Kate distance = (420 + 360) / 2 = 780 / 2 = 390 m
Explain why lithium fluoride is a solid at room temperature
What is the formula for potassium nitrate? (3 points) a KN b K3N c KNO2 d KNO3
Answer:
KNO3 (Potassium Nitrate)
Explanation:
I just know.
How many do each element are present in the following formula? 3 Ca3 (PO4)2 + 4 CaO
I really need help plz help if you can!!!!!
3 Ca3 (PO4)2 + 4 CaO
So we can see that there are 3 Ca3 (Ca3, Ca3, Ca3), which means you multiply the subscript by the coefficient, meaning 9 Ca. Then we see (PO4)2, which means that there are two PO4 (PO4, PO4) so we multiply the subscript 2 by the subscript 4 on O to equal 8 O, and we multiply the subscript 2 by the subscript 1 on P (the 1 is not written) to equal 2 P.
So far we have 9 Ca, 8 O, and 2 P.
One last term, 4 CaO (means CaO, CaO, CaO, CaO) which translates to 4 Ca and 4 O.
Add them all together and you get (9+4=13) 13 Ca, (8+4=12) 12 O, and 2 P
What is the name of theses
NO2
N2O
ZnF2
CCl4
SeH2
K2O
Answer:
nitrogen
nitrogen oxide
zincflorite
?
potassium oxide
How would an apple, potato, and onion all taste the same?
Answer:
If you were to plug your nose, it would block out more than 80% of taste, causing all three items to have no taste- therefore making them taste the same.
Explanation:
photosynthesis is chemical change that happens in the plant what substance within the plant allows light energy to be captured
Explanation:
Sunlight provides the energy needed for photosynthesis to take place. In this process carbon dioxide and water are converted into oxygen (a waste product that is released back into the air) and glucose (the source of energy for the plant).
When she placed her hand on the side of the container, it felt really cold, but it didn't feel that way before. The temperature had dropped by about 30 degrees Celsius. The substance was now grey and crystallin in structure.
Was this a chemical reaction?
Answer the question (in a complete sentence) Provide evidence to support your claim and describe (reasoning/justify) how the evidence supports the claim.
Answer:
this is a physical reaction
Explanation:
Answer:
this is a physical reaction
Explanation:
Which type of precipitation can be considered acid rain?
Answer:
form of rain, snow, hail, dew, or fog that transports sulfur and. nitrogen compounds from the high atmosphere to the ground
complete combustion of wax take place in____ zone of a candle flame
Answer:
Non-luminous
Explanation:
Complete combustion of wax take place in non-luminous zone of a candle flame
How many atoms are found in one molecule of water?
Answer: To calculate the number of molecules and atoms in a water drop, you need to know the chemical formula of water. There are two atoms of hydrogen and one atom of oxygen in each water molecule, making the formula H 2 O. So, each molecule of water contains 3 atoms. Molar Mass of Water
Explanation: Hope this helps!
From: Kenma! ^^
Answer:
the answer is 3 atomsExplanation: