Answer:
1)In simple terms, the endothermic reactions absorb energy from the surrounding that is in the form of heat. On the other hand, an exothermic reaction releases energy into the surrounding of the system
2)Fusion, vaporization, and sublimation are endothermic processes, whereas freezing, condensation, and deposition are exothermic processes.
Answer:
In simple terms, the endothermic reactions absorb energy from the surrounding that is in the form of heat. On the other hand, an exothermic reaction releases energy into the surrounding of the system.
Explanation:
googled it for you hope it helps.
:)
Which air is driest? Air Temp 30F Dew-point 29F, Air Temp 77F Dew-point 19F, Air Temp 66F Dew-point 60F, or Air Temp 50F Dew-point 36F
Answer:
Air Temp 77F Dew-point 19F
Explanation:
Quiz
The dew point can be described as the temperature required by the air to be cooled. The driest air will have a higher dew point, therefore, at an air temperature of 66°F and a dew point of 60°F. Therefore, option (C) is correct.
What is dew point?The dew point can be defined as the temperature at which air should be cooled to become saturated with water vapor assuming constant air pressure and water content.
Moisture capacity will decrease below the dew point. Airborne water vapor will condense to form liquid water or dew. Dew develops on the surface and occurs through contact with a cooler surface.
The dew point is called the frost point when the temperature is below the freezing point because frost is produced by deposition rather than a condensation of water.
The humidity also impacts the dew point. The dew point increases when there is higher moisture in the atmosphere. Therefore, the higher dew point refers to less humid air or drier.
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How many moles of gas does it take to occupy 120 liters at a pressure of 2.3 atmospheres and a temperature of 340 K?
Answer:
9.9 moles
Explanation:
What we know:
P = 2.3 atm V = 120 L
R= .0821 L atm/K mol T= 340 K
What we're looking for: n = ?
2.3 atm ( 120 L) = n (.0821 L atm/K mol) (340 K)
2.3 ( 120 ) = n (.0821 / mol) (340)
276 = n (27.914 / mol )
9.9 = n / mol
9.9 mol = n
Which mineral can be found in the rocks phyllite, sandstone, and granite?
1.
quartz
2.
pyroxene
3.
gypsum
4.
calcite
Sub
Answer:
1 quartz
Explanation:
pls tell me if I'm wrong
Quartz can be found in the rocks phyllite, sandstone, and granite.
Hence, Option (1) is correct answer.
What is Rocks phyllite ?Rock phyllite are composed of mainly quartz, mica and chlorites. It is a soft and durable rock.
What is Sandstone ?Sandstone are composed of mainly quartz, feldspar and lithic fragments. It is a sedimentary rock.
What is Granite ?Granite are composed of three minerals mainly that is quartz, plagioclase and potassium feldspar and usually carry mica or hornblende. It is a light coloured igneous rock.
Thus from above conclusion we can say that Quartz can be found in the rocks phyllite, sandstone, and granite.
Hence, Option (1) is correct answer.
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Water is the only substance that can dissolve polar solutes. True or False?
Answer:
false!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Explanation:
The ____ energy of an object increases with its height.
Thermal
Chemical potential
Gravitational Potential
kinetic
Answer:
chemichal potential
Explanation:
Answer:
Gravitational Potential
Can somebody help me with this??!
Rising greenhouse gases. Climate change. Rising energy costs. Declining fossil fuels reserves. With the arguments against fossil fuels continuing to pile up it is no wonder people have latched onto nuclear power as an attractive solution....
1. What is nuclear fission? ________________________________________________________________________________
2. What is nuclear fusion? ________________________________________________________________________________
3. What happens when the energy from splitting an atom is released all at once? _____________________________________
4. What element is used in nuclear power plants as fuel? ________________________________________________________
5. What dangerous byproduct is produced by nuclear power plants? _______________________________________________
6. Describe THREE benefits of using nuclear power: ___________________________________________________________, _____________________________________________________, and __________________________________________
7. What is the function of the cooling towers of the nuclear reactor shown below? _____________________________________
Answer:
Nuclear Fission is a nuclear reaction or a Radioactive decay progress in which the necleus of an atom splits into two or more smaller, lighter neclei
What are the coefficients that would correctly balance this equation? __Zn+__K2CrO4 > __K + __ZnCrO4
A. 2,1,2,1
B. 1,2,3,1
C. 1,2,1,2
D. 1,1,2,1
Can someone please help
D. 1,1,2,1
Further explanationEqualization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:
1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc. 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product 3. Select the coefficient of the substance with the most complex chemical formula equal to 1Reaction(unbalanced)
Zn+K₂CrO₄ ⇒ K + ZnCrO₄
Give coefficient
aZn+K₂CrO₄ ⇒ bK + cZnCrO₄
Zn, left=a, right=c⇒a=c
K, left=2, right=b⇒b=2
Cr, left=1, right=c⇒c=1⇒a=1
O,left=4,right=4c⇒4c=4⇒c=1
Reaction(balanced0
Zn+K₂CrO₄ ⇒ 2K + ZnCrO₄
Why would farmers in the United States be especially concerned about a decrease in ground water?
Answer:
yes probably
Explanation:
the decrease would affect the plants growing in the ground cause there is no access water they can get
I need help ASAP ... please
Answer:
help with what?
Which is the process by which a gas changes to a solid?
deposition
evaporation
freezing
sublimation
Answer:
Deposition
Explanation:
I know this is correct because i just took the test JDHSGVDK
Answer:
it's a (deposition)
Explanation:
right on edge
Copernicus challenged the way in which people of his time thought about the solar system. How did Copernicus describe the motion of the sun?
A.The sun is stationary.
B.The sun revolves around Earth.
C.The sun moves in an elliptical orbit.
D.The sun moves in a straight line through space.
Answer:
A. The sun is stationary and we rotate around it.
Hope This Helps!
Answer:
A
Explanation:
the sun is stationary
How did you organize the tiles in part A? Describe the method that you used.
Answer:
I ordered the tiles from left to right and top to bottom as the numbers kept increasing. The tiles were also organized based on the color and shape that they were. The tiles with the same color and shape were arranged in the same column.
Explanation:
In the modern periodic table, the elements are listed in order of increasing atomic number and elements having similar chemical properties naturally line up in the same column (group).
Based on the quantity as well as shape of each tile, arrange them in the table.
What is tile?The majority of the time, tiles are thin, square usually rectangular coverings made of durable materials like ceramic, stone, metals, baked clay, or perhaps even glass. They are typically put in place inside an arrangement to cover surfaces including tabletops, borders, floors, walls, and roofs.
In another definition, a tile is indeed a building material or a comparable object, such the rectangular game counters. The word comes taken from the Latin phrase tegula, which means a roof tile made of heated clay. Based on the quantity as well as shape of each tile, arrange them in the table.
Therefore, based on the quantity as well as shape of each tile, arrange them in the table.
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Predict what would happen if a positive charge is placed between the two charges and allowed to move. Explain.
Answer: The same effect happens when you put two electrons near each other (or two protons). We know that if you have a single positively charged particle, a positively .
Explanation: i hope that helped. have a good day.
what is the speed of a car traveling east 85 miles over 45 minutes ? 0.5 mph
1.9 miles per minute
1.9 miles per minute East
0.52 mph
Answer:
1.9 miles per minute
Explanation:
The speed of a substance can be calculated by using the formula:
S = d/t
Where;
S = speed (m/s)
D = distance (m)
t = time (s)
In this question, the units for the distance and time are miles and minutes respectively. Hence, the speed is:
S = 85miles ÷ 45 mins
S = 1.888 miles/min
S = 1.9 miles per minute
How much energy is required to raise the temperature of 0.2 kg of aluminum from 15°C to 18°C? (Refer to table of specific heat values.)
The amount of energy which is required to raise the temperature of 0.2 kg of aluminum from 15°C to 18°C is 49,545 J.
How do we calculate absorbed energy?Amount of energy absorbed by any material will be calculated by using the below equation:
Q = mcΔT, where
m = mass of aluminum = 0.2 kg
c = specific heat of aluminum = 897 J/kg.K
ΔT = change in temperature = 18 - 15 = 3°C = 276.15 K
On putting these value on the above equation, we get
Q = (0.2)(897)(276.17) = 49,544.89 = 49,545 J
Hence required amount of energy is 49,545 J.
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I need help (yes again)
Answer:
with what?
Explanation:
Using dimensional analysis, how many kilometers are there in 34 inches?
Answer:
There are many ways to figuring this out: you could use a ruler, a calculator or scrap paper.
Explanation:
This is not an actual flat out answer, but it’s helpful methods to getting the answer the next time you are stuck. Hope you are having a nice day. Bless your heart and soul.
Which chemical equation follows the law of conservation of mass?
A. 2NaOH + H2S04 - Na2SO4 + H20
B. NaOH+H2SO4 - Na2SO4 + 2H20
C. 2NaOH + H2S04 - Na2SO4 + 2H20
D. NaOH + H2SO4 - Na2SO4+H20
Answer:
C. 2NaOH + H₂SO₄ -> Na₂SO₄ + 2H₂O
Explanation:
Simply count up the elements in the reactants and the products, then compare.
Reactants:
2 Na = 2 Na
2 O + 4 O = 6 O
2 H + 2 H = 4 H
Products:
2 Na = 2 Na
4 O + 2 O = 6 O
2 x H₂ = 4 H
Because the constituent elements in the reactants = products, the law of conservation of mass is preserved. You can check the other 3 options to see that they will not equal each other.
Don't forget to distribute the coefficients to every part of the formula; on the other hand, subscripts only apply to the element they are under. If a coefficient needs to be multiplied to an element with a subscript, use the subscript instead of 1 (1 is when there are no subscripts).
There are several differences between chemical and physical changes. Which process is a sign of a chemical change? A. Rotting potato gives all of bad smell
B. Melting block of ice leaves a large puddle
C. A cloud quickly changes shape when blown by wind
D. A plaster statue breaks when it falls into the floor. PLEASE HELP
Answer:
A. a rotten potato gives all of bad smell
Explanation:
B,C,D are all physical changes because we can reverse them back.we can cool the water back to make ice. if the wind passes again we can randomly get the same cloud shape in c. and in d we can make that statue again. but in A can we reverse the rotting process ? ( the enzyme reaction) no we cant because it is a chemical reaction it gives a bad smell because of the chemical changes occuring in it.
hope this helps
Round the number 31.257592 to 5 significant figures.
Explanation:
Highlight the first 5 digits. You should highlight 3, 1, 2, 5, and 7 in that order.
Note the next digit after that is a 5, meaning we'll round that 7 up to 8
So 31.257592 becomes 31.258 when we round to five significant figures.
Answer this easy science question for brainiest
First come first served:)
Answer:
The nucleus is a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral.
Explanation:
Answer:
the person above me is right
hope you do good on your test
Explanation:
An atom with 4 protons and 4 neutrons Is called?
Answer:
i'm pretty sure it's beryllium
Explanation:
Answer:
Beryllium
Explanation:
the atomic number is equal to protons
When would it be appropriate to use a model instead of a controlled experiment
a
is the correct answer
Explain what makes a cirrus cloud.
Answer:
the answer is below
Explanation:
Cirrus clouds form from the ascent of dry air, making the small quantity of water vapour in the air undergo deposition into ice (to change from a gas directly into a solid). Cirrus is made up completely of ice crystals, which provides their white colour and form in a wide range of shapes and sizes.
*blank* carry blood away from the heart, while *blank* carry blood back to the heart.
fill in the blank spaces...
A. capillaries
B. arteries
C. Blood vessels
D. Veins
Answer:
i think its C im not so sure
Explanation:
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What was the carbon cycle on the prairie like?
Answer:
Explanation:
Carbon cycle explains the movement of carbon between the earth's biosphere, geosphere, hydrosphere and atmosphere. ... Carbon atoms are then released as carbon dioxide when organisms respire. The formation of fossil fuels and sedimentary rocks contribute to the carbon cycle for very long periods.
Explain how Earth is heated through radiation
Answer:
Radiation happens when heat moves as energy waves, called infrared waves, directly from its source to something else. This is how the heat from the Sun gets to Earth. In fact, all hot things radiate heat to cooler things. When the heat waves hits the cooler thing, they make the molecules of the cooler object speed up.
HELP! will mark brainliest if gotten right
Please answer fast!!!!!!!The table shows the distance that car 2 traveled during three trials. What is the average distance traveled by car 2 without a bumper? Be sure to show your work.
Trial 1 Trial 2 Trial 3
25, 27, 29
Answer: 25 + 27 + 29 = 81
81 divided by 3 = 27
your answer is 27
Explanation: you add them all together then however many numbers there are is how you divide it
Answer:
81 and 27 i think
Explanation: