PLEASE HELP FAST
Which is the number of moles of carbon dioxide produced from the complete combustion of 5.7 moles of ethanol?
C2H2O + O2 → CO2 + H2O
of
Select one:
O a. 11.4
O b. 17.1
O c. 2.85
O d. 22.8
Answers
Related Questions
(GIVING BRAINLYIST) Two cities are located at the same latitude but have very different weather conditions. What factor would most likely cause this difference?
Their distances from the equator
Their distances from the poles
Their elevations above sea level
Their locations in different climate zones
Answers
Answer:
3
Explanation:
their elevation from the sea level
1 and 2 can't be the answer because if they are on the same latitude there distance from the equator and poles is the same
4 is also not the answer because on the same latitude they will have the same climatic zone
Answer:
Their locations in different climatic zones
Explanation:
Match the term to its definition (Lessons 6.03, 6.04 and 6.05)
(i can't fit this all without confusion)
Answers
Answer: the first paragraph is rain forest biome and the 2nd one is arctic tundra biome and finally the last paragraph is ocean or marine biome
Explanation:
rain forests have warm temperatures and include alot of animals and plants , artctic tundra biome includes cold temperatures ice stuff and all that and ocean or marine biome is pretty much just the ocean with seals , whales and marine life yk.
help me with this I only have one more
1156 g/L
= ________ kg/mL
Answers
The Answer is 0.001156.
1156 g/L = 1.156 kg/L
Since 1 L is equal to 1000 mL, we can convert kg/L to kg/mL by dividing by 1000:
1.156 kg/L = 1.156/1000 kg/mL
1.156/1000 kg/mL = 0.001156 kg/mL
Therefore, 1156 g/L is equal to 0.001156 kg/mL.
How could you turn steam into a liquid?
A. Using a magnet
B. By removing thermal energy
C. By evaporating it
D. By adding thermal energy
Answers
Answer: B
Explanation:
CONDENSATION When steam is cooled, it releases thermal energy and turns into its liquid state. This process is called condensation.
A is incorrect because using a magnet has nothing to do with a phase change.
C is incorrect because the steam cannot be evaporated
And D is incorrect because if you add thermal energy, the particles would move really fast and possibly turn into plasma.
Hope this helps;)
Water off the coasts of some continents is typically colder than water further offshore because…
A. What evidence have you discovered to explain why air flows?
B. What evidence have you discovered to explain why Earth has global wind systems?
C. What evidence have you discovered to explain why ocean waters flow?
D. What evidence have you discovered to explain how wind influences the movement of water?
And for the Summary.
Water off the coasts of some continents is typically colder than water further offshore because...
Answers
which chemical process is illustrated below?
Answers
Answer:
I believe it is D, Dehydration synthesis of amino acids to form a dipeptide
What internal physical structure protects the organs and supports the body of the animal? Fur Feathers Skeleton Skin
Answers
Answer:
Skeleton
Explanation:
Answer:
skeleton
Explanation:
What kind of rocks would you expect to see on Mars? What evidence supports your response?
Answers
All chemicals in the lab (including foodstuffs and store-bought chemicals) should be treated as if they could be hazardous. True or False?
Answers
Answer: True, all chemicals should be treated as if you don’t know what they are.
Explanation:
All chemicals should be treated as if you do not know what they are. In this way you can protect yourself and others from potential hazards, as chemicals can be mixed up or confused.
The statement "All chemicals in the lab (including foodstuffs and store-bought chemicals) should be treated as if they could be hazardous" is definitely true.
What are Chemicals?Chemicals may be characterized as any sort of basic substance that is significantly utilized in or manufactured during a reaction that involves remarkable alterations to atoms or molecules.
The methodology of treating chemicals demonstrates their physical as well as chemical properties, appearances, and reactiveness. In this way, one must become much more confidential with all the basic characteristics, potential hazards, and efficiency of any chemical.
This procedure also delivers proficiency to you in the future with respect to chemicals or their efficiency. It also decreases your potential fear of chemicals.
Therefore, the statement "All chemicals in the lab (including foodstuffs and store-bought chemicals) should be treated as if they could be hazardous" is definitely true.
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How to work out the relative mass of potassium? What is the calculation? ( explained very easily )
Answers
Answer:
39
Explanation:
Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.
———————————
(1/12)th Mass of one C12 atom
Explain a situation where two different species could compete for the same abiotic resource. I really can't figure this out
Answers
Resource partition in which two species compete with themselves for same abiotic resource, they avoid competition by choosing different times for feeding.
What are the Abiotic resources?The abiotic resources are defined as the non-living element present surrounding the ecosystem, for example Sunlight, water and soil; Abiotic factors can be chemical and physical factors which include the atmosphere, the hydrosphere, and the lithosphere.
The abiotic resource include Climate is the weather conditions and temperature and plays an important role in maintaining ecosystems, even a small change in climate can change the organism life.
pH balance is the resource refers to the overall acidity or alkalinity level of the environment, for example Pure water has a pH of 7, Acidic mixtures have a pH balance of less than 7 and alkaline mixtures have a pH balance of 7 or more which shows its effects on the organism.
Light is present in an environment or ecosystem can have an impact on the organisms of the ecosystem.
Water Currents play a crucial role in regulating ecosystems which is the most important and beneficial parts of the marine ecosystem and they are important because they redistribute minerals, nutrients, heat, oxygen, and more.
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(1.) If at 100.0 mL solution contains 0.850 moles of a solute, what is the molarity ?
(2.) If the molarity of a solution is 12 M and the volume of the solution is 1.0 L, how many moles of solute does the solution contain ?
Answers
Answer:
See below
Explanation:
1) Moles / volume
.85 mole / .1 liter = 8.5 M
2) 12 moles are contained in one liter
.85 mole / .1 liter = 8.5 M
2) 12 moles are contained in one liter
In a solution, what is the substance that is dissolved called? HINT: It is always in a smaller amount.
A) solvent
B) solute
C) precipitate
D) saturated
Answers
Answer: B
Explanation:
solvent: dissolves (large amounts)
solute: dissolves (smaller amounts)
precipitate: deposited in solid form
saturated: greatest number of hydrogen atoms
hope this helps
how can you determine if the information you are reading is based on science or not?
Answers
Match the vocabulary word to the definition. Question 1 options:
not easily changed?
A. an attraction between two or more atoms resulting in the formation of different chemical substances?
B. A chemical bond that involves sharing a pair of electrons between atoms in a molecule?
C. electrons in the outermost shell?
D. Formed when one or more electrons are transferred from one atom to another?
1. stable 2. chemical bonding 3. valence electrons 4. ionic bond 5. covalent bond
Answers
Answer:
a
Explanation:
B. Is covalent bonding
C. Is valence electrons
D. Is ionic bonding
:)
How did this piece of evidence change your thinking about the channel on Mars? Explain your ideas below.
Answers
The piece of evidence changed thinking about the channel on Mars because it shows that the rock was formed next to flowing water as such rock formations exist on Earth and were formed by flowing water.
Was there flowing water on Mars ?The geologic process that could have created the channel on Mars is water moving. We can infer from the image that water running across the terrain on Mars created channels similar to those on Earth.
We can claim that the flowing of water creates the channels on Mars because when the water runs for a long period from the same region, it takes the sediments and creates channels.
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30 POINTSSSSSSSSSSSSS how is increasing the amount of sunlight most likely to affect an ecosystem? A. by increasing soil moisture B. by decreasing photosynthesis C. by increasing plant growth D. by decreasing the food supply
Answers
Answer:
here
Explanation:
The increase in sunlight up to a limit might result in an increase in the photosynthesis process as well as in transpiration. More amount of energy will be produced by plants.
Which of the following observations indicates that atoms of all elements contain small, negatively charged particles?
A) Alpha particles are repelled by cathode rays of elements
B) Cathode rays are deflected towards a positively charged rod
C) a particulat frequency of light is produced by a gas in an excited state
D) certain areas of the atom called orbitals contain all the charged particles
Answers
Answer:
B) Cathode rays are deflected towards a positively charged rod.
Answer: The correct option is b (Cathode rays are deflected towards a positively charged rod )
Which statement is NOT true regarding natural vs. synthetic materials?
A) An example of a natural material is sand.
B) An example of a synthetic material is nylon.
C) Synthetic materials are made from natural resources.
D) Synthetic materials only have a negative impact on society.
Answers
Answer:
Option C
Explanation:
Answer:
Option C
Explanation:
can praseodymium conduct electricity
Answers
Answer:
praseodymium can conduct electricity as it is one of it's conductivities
What is an ellipse please help)
Answers
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
Newton's second law of motion is F = ma.
A net force of 60 N north acts on an object with a mass of 30 kg. Use Newton's second law of motion to calculate the amount of acceleration the object will experience. Then explain how the amount of acceleration will change if the net force or the mass of the object increases?
Answers
Answer: The acceleration of the object is 2m/s^2. If net force increases, acceleration will also increase and if mass increases, the acceleration will decrease.
Explanation:
Force is defined as the product of object's mass and acceleration.
Mathematically,
F = ma ......(1)
or,
a = F/m .....(2)
where,
F = Force exerted on an object = 60N
m = mass of an object = 30kg
a = acceleration of the object = ?
Putting values in above equation, we get:
a = 60 kg.m/s^2/30 kg = 2m/s^2
The acceleration of the car is 2m/s^2.
From equation 2, it is visible that acceleration is directly proportional to force. This means that \if force increases, acceleration also increases.
And acceleration is inversely proportional to mass of the object. This means that if mass increases, the acceleration decreases.
Hence, if net force increases, acceleration will also increase and if mass increases, the acceleration will decrease.
A net force of 60 N north acts on an object with a mass of 30 kg , so according to Newton's second law of motion the acceleration of the object would be 2 m / s²,the amount of acceleration would decrease if the mass of the object increases.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
F =m × a
As given in the problem, a net force of 60 N north acts on an object with a mass of 30 kg.
60 = 30 × acceleration
acceleration = 60 / 30
= 2 m / s²
Thus, the acceleration of the object would be 2 m / s² , and the acceleration would decrease if the mass of the object increases.
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How can you tell if an object is accelerating?
Answers
Answer:
If an object is changing its velocity -whether by a constant amount or a varying amount
Explanation:
then it is an accelerating object. And an object with a constant velocity is not accelerating.
Answer:
the object can be accerleratting because the object supports it then later goes up for example a ball. if it supports that means its positive. if it has the weight like i mean by initially at rest. this means its negative. Hope this helps!
Explanation:
_________________________________ data are related to descriptive information that is expressed as a
_____________________________ or quantity. PLEASE HELP!!! (10 pts)
Answers
Answer:
qualitative data
and
quanitative data
Explanation:
hope this helps and PLZ brainliest thank you
What is the charge on the Cr in Cr2O72-
Answers
Answer:
+6.
Explanation:
So, a chromium atom here has an oxidation number of +6.
HELP! 100 POINTS! A cinder block is pulled 0.50 meters to the right in 3 seconds. What is the block's average speed to the nearest hundredth of a meter per second (m/s)?
Answers
The average speed of the blocks are 0.36 m/S.
Explanation:
Average speed is defined as the ratio of distance covered per unit time. So if it is said that blocks are pulled to 0.9 m in the right side. This means the blocks cover a distance of 0.9 m from the origin and that distance is covered in 2.5 s. Thus, the average speed can be calculated from the change in speed
with respect to time. As at time t = 0, the speed is
also zero, and at time t = 2.5 s, the speed will be
Speed =
0.9 = 0.36
2.5
Since, in this case, the speed is equal to the average speed of blocks. So the average speed of the blocks will be 0.36 m/s.
2.5
Since, in this case, the speed is equal to the average speed of blocks. So the average speed of the blocks will be 0.36 m/s.
1. In these two pictures, the arrows represent forces acting. Write the names of the forces in the boxes
2. Draw and label your own arrows on these two pictures to show the forces acting.
(See the image attached)
Please help!!! It will be greatly appreciated
Answers
thew one with the plane the arrow is going slightly down and the one with the ball has two arrows one for the ball and foot both going same way
Select the correct scientific notation form of this numeral using only 2 significant figures. 5,421,200.00 m
Answers
Answer:
5.4 × 10^6
Explanation:
I really need this much help. I still don't get how this works.
I only know that when you blow into a tube, you see what's inside
Answers
Answer: B
Explanation:carbon dioxide is used for photosynthesis
Hydroelectric power plants capture the ______________ of falling water to generate electricity. The falling water turns a wheel called a turbine and ____________________ the mechanical energy of falling water into electrical energy.
Windmills capture the ____________________ of moving air to generate electricity. The moving air turns the blades of the windmill turning a turbine and changes the ___________________ energy of the moving air into electrical energy.
Fill in the blanks!
Thank you!
Answers
Answer:
1: energy
2: converts
Kinetic energy is either 3 or 4, those questions are really similar.
Answer:
1: energy
2: converts
3: energy
4: kinetic
Explanation: