Answers
Related Questions
Conversion factor 1 calorie (kicalorie) = 1000 calories
Answers
Answer:correct
Explanation:
The large calorie, food calorie, or kilocalorie (Cal, calorie or kcal) is the amount of heat needed to cause the same increase in one kilogram of water. Thus, 1 kilocalorie (kcal) = 1000 calories (cal).
Farmers use conservation practices such as crop rotation to insure that their crops are sustainable. Crop rotation is the process of moving crops to a new location to get the nutrients from the soil needed for that specific crop to grow. What conclusion can be drawn if farmers do not use soil conservation practices such as crop rotation?
A.
If farmers do not use soil conservation practices, the topsoil, which contains weathered rocks, will not be fertile to promote plant growth because of loss of nutrients from the soil.
B.
If farmers do not use soil conservation practices, the topsoil, which contains weathered rocks, will be fertile to promote plant growth because of the loss of nutrients from the soil.
C.
If farmers do not use soil conservation practices, the topsoil, which contains humus, will not be fertile to promote plant growth because of the loss of nutrients from the soil.
D.
If farmers do not use soil conservation practices, the topsoil, which contains humus, will be fertile to promote plant growth because of the loss of nutrients from the soil.
Answers
Answer:
C. If farmers do not use soil conservation practices, the topsoil, which contains humus, will not be fertile to promote plant growth because of the loss of nutrients from the soil.
Explanation:
The top soil is rich in humus and not weathered materials. It is not close to the bedrock. Rather, the topsoil is rich in organic matter and it is present as humus in the soil.
If crop rotation is not being practiced, the soil's nutrients would be highly depleted without replenishing them back. With crop rotation the top soil can be made more fertile when it is left uncultivated for a period of time. Instead of heavily relying on a single piece of land, crops can rotated on a timed basis so that soils will have enough time to restore their nutrients.PLEASE HELPPP !!!!!!!!!!!!!!!!
Answers
Answer:
I think it's the last one I'm sorry if it's wrong
Explanation:
it sounds like it fits
Geologic Time Scale
Time Period Duration (Millions of Years Ago)
Cenozoic 66-0
Mesozoic 252-66
Paleozoic 541-252
According to the scale, what time period are we in today?
a
Cenozoic
b
Mesozoic
c
Paleozoic
d
None of these
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Help please! A gas occupies 500 mL at 270 mm Hg and 55°C. If the pressure is changed to 1.8 atm and the temperature is
increased to 100°C, what is the new volume? Be sure to show the setup and the final answer and unit.
Show Your Work
Answers
Answer:
V₂ = 112.14 mL
Explanation:
Given data:
Initial volume = 500 mL
Initial pressure = 270 mmHg (270/760 =0.355 atm)
Initial temperature = 55 °C (55 +273 = 328 K)
Final temperature = 100°C (100+273 = 373 K)
Final volume = ?
Final pressure = 1.8 atm
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
V₂ = P₁V₁ T₂/ T₁ P₂
V₂ = 0.355 atm × 500mL × 373 K / 328 K × 1.8 atm
V₂ = 66207.5 atm .mL. K / 590.4 K.atm
V₂ = 112.14 mL
Which is most likely the result of millions of metal atoms crowding together so that molecular orbitals become combined?
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Answer:
(The Formation Of Bands In A Crystal)
What happens to light waves as they enter the Earth's atmosphere?
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NEED HELP ASAP!!!!!!!Instructions
Please complete the macromolecule chart using your notes and the PowerPoints. If you have trouble typing directly on the paper remember you probably need to download it first so it opens in a new window. Remember to save it with your name at the end so that I can tell whose paper it is. Than upload and submit. If you are having trouble, let me know.
Answers
Answer:
mouse
Explanation:
How many moles are equal to 1.3 x 1024 atoms of aluminum?
Answers
Answer:
The answer is 2.16 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\ [/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{1.3 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 2.159468...[/tex]
We have the final answer as
2.16 molesHope this helps you
Which of these changes to a modern lifestyle would promote the
development of more-sustainable practices in the world food system?
O A. Switching from chicken to beef
B. Eating fewer processed foods
O C. Buying tropical fruits
D. Eating fresh vegetables year-round
Answers
Eating fewer processed foods would promote the development of more-sustainable practices in the world food system.
What are Processed food?
This is the food which has undergone some degree of alteration during preparation such addition of preservatives etc.
Eating less of it will ensure that more sustainable practices in the world food system are promoted.
Read more about Processed food here https://brainly.com/question/21201084
#SPJ2
wich if the following statements best describes why the mass of a bowling ball would not change if it were transported from earth to the moon?
gravity is constant forge
the bowling ball will adapt to the changes in gravity
matter is resistant and changes gravity
the amount of mattet in the bowling ball remains the same
Answers
Answer:
the amount of matter in the bowling ball remains the same
Explanation:
The reason why the mass of the bowling ball on earth and moon remains the same is that matter in the bowling ball remains the same.
Mass of any substance is the amount of matter it contains.
Since there is no loss in matter, the mass of the bowling ball anywhere in the universe will be the same. Only the weight changes due to differences in gravity.
2.Chromosomes are____
Both A and B
Made of DNA
None of the above
Found in the nucleus of a cell
Answers
Answer:
Both A and B
Explanation:
Answer: The answer is the last one: found in the nucleus of a cell
Explanation:
Each chromosome is made of protein and a single molecule of dna. As It is getting passed from the parents to the offspring the dna contains specific instructions that make each type of living thing unique.
What is the correct formula that
would result from the combination
of the two ionic species?
Cs1+ and Ci1-
Answers
Answer:
CsCl
Explanation:
The ionic species are:
Cs⁺ and Cl⁻
The two ions will combine to form an ionic compound which results from the electrostatic attraction between oppositely charged ions.
Elements or ions exchange directly their combining powers or their simplest whole number ratio during the formation of chemical formulae of compounds
Cs⁺ and Cl⁻
Combining power 1 1
Exchange of
valencies 1 1
Compound CsCl
A gold coin contains 3.47 × 10^23
gold atoms.
What is the mass of the coin in grams?
Answers
Answer:
Mass = 114.26 g
Explanation:
Given data:
Number of gold atoms = 3.47×10²³ atoms
Mass in gram = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
3.47×10²³ atoms × 1 mol /6.022 × 10²³ atoms
0.58 mol
Mass of gold:
Mass = number of moles × molar mass
Mass = 0.58 mol × 197 g/mol
Mass = 114.26 g
9. Which zone of a flame does a goldsmith use for melting gold and silver and why?
Answers
Answer:
Outermost zone
Explanation:
Because the outermost zone is the hottest part of the flame.
Answer:
outer most zone
Explanation:
The outermost zone is used by a goldsmith for melting gold and silver. This is because it is the hottest zone of the flame where complete combustion takes place.
. Which of the following statement is FALSE about gas particles? a. Gases expand to fill their container. b. Gases increase in movement when temperature increases Gases are in constant rapid motion. d. Gas particles are packed tightly together. please hurry
Answers
Answer:
D
Explanation:
which element is more reactive out of oxygen and sulphur
Answers
Answer:
Oxygen
Explanation:
Oxygen is more reactive because it has small atomic size which has high tendency to attract more electrons.
Give two examples of compounds exhibiting double covalent bonds between atoms of its constituent molecules and explain why they form a double covalent bond.
Answers
Answer: Due to the sharing of electrons, they exhibit characteristic physical properties that ... Here, we discuss two classes of compounds based on the bond type that ... Covalent bonds are characterized by the sharing of electrons between two or ... Describe the types of orbital overlap that occur in single, double, and triple bonds
Explanation: That's what I think it is.
it!
t
Calculate How old was the tree when it was
cut down?
Answers
Answer:
No numbers how are we supposed to know
Explanation:
Which of the following best describes a hypothesis?
A. An explanation that is supported by scientific data
B. A proven explanation for experimental results
c. A possible answer to a scientific question
D. A question about the natural world
please help i will give brainliest
Answers
How many molecules are in 210 grams of CO2?
Answers
Answer:
30 molecules
Explanation:
easy
Which of the following is the correct formula For aluminum oxide?
A.AIO
B.AI3O2
C.OAI
D.AI2O3
Answers
Answer:
The answers D.
Explanation:
Answer:
Its D
Explanation:
Just took the Test.
How is energy causing motion or creating a change in this image? (2 points)
Energy from fuel allows the plant to grow and make its own food.
Energy from the sun allows the plant to grow and make its own food.
Energy from the wind allows the plant to grow and make its own food.
Energy from the water allows the plant to grow and make its own food.
Answers
Answer:
Energy from the sun allows the plant to grow and make its own food.
Explanation:
From this image, we clearly see the leaves exposed to sun which supplies solar energy to the plant.
Plants are capable of producing their food from inorganic chemical sources. In the process of photosynthesis, plants takes carbon dioxide and water in the presence of sunlight to manufacture their own food. The food provides energy that allows the plant to grow.Answer:
Energy from the sun allows the plant to grow and make its own food
Explanation:
5. How many moles are equal to 2.4 x 1023 formula units of sodium chloride?
Answers
Answer:
The answer is 0.4 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\ [/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{2.4 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{2.4}{6.02} \\ = 0.398671096....[/tex]
We have the final answer as
0.4 molesHope this helps you
Which of the following is an indication of a physical change?
O A. The formation of a new substance
O B. Giving off a smell
O C. A change in the shape of a substance
O D. The production of gas and heat
Answers
Answer:
A change in the shape of a substance
Explanation:
Because when ths shape of a sunstance changes , its physical appearance changes .A physical change is a change to the physical—as opposed to chemical—properties of a substance. They are usually reversible. The physical properties of a substance include such characteristics as shape (volume and size), color, texture, flexibility, density, and mass.
Is nucleus a plant or animals cell
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If the question is "is there a nucleus in a plant or an animal cell", then the answer is both plant and animal cells have a nucleus.
If the question is "is a nucleus a plant or animal cell", it is neither-- a nucleus is not a cell, but it is an organelle.
I hope this helped!
which star is the dimmest HELP PLEASE
Answers
Answer:
Bellatrix.
Explanation:
Answer:
vega i believe just look at the number and see what kinda is less ykwim
Please help me what is the answer
Answers
There are 20.8 moles of propanol
Further explanationThe mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
1.2 x 10⁵ molecules of propanol
[tex]\tt \dfrac{1.25\times 10^{25}}{6.02\times 10^{23}}=20.8~moles[/tex]
how many sig figs are in 0.0093
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Answer:
there are two significant figures
Explanation:
Answer:
there are two
Explanation:
because the zeros dont count
How do you know when the endpoint is reached in a titration? When does this occur?
Answers
Before a titration, indicator is added to the analyte (which is in the flask, and usually the chemical of unknown concentration). The titrant is then placed in a burette and slowly titrated into the analyte. When the indicator changes color is when the endpoint of the titration has been reached. This occurs (approximately) at the equivalence point.