There are a lot you want to know about heat transfer.
If u understand the mode of heat transfer well, then heat transfer is easy to continue.
Answer:
1: They give to the body Vitamin D 2: they give solar energy and that is what gives us revaluation around the sun (Drag) 3: it gives plants energy for photosynthesis (or dont know)
4:solar panels gives energy by the sun radio controlled area that gives us the battery's, lights etc...
Explanation:
EXPLAIN IT
Electrons have a maximum capacity of 2 electrons in the lower most shell
then in the second shell it has the maximum capacity of 8. What about the third shell is it 8 or 18 (please explain with the reason)
Answer:
18
Explanation:
The third shell has maximum capacity of 18 electrons. The maximum capacity of a shell can be calculated by the formula 2n^2. Where n is shell no. such as 3
Terbium-147 undergoes positron emission to become a stable atom. what is that stable atom? a. b. c. d. e. f.
Terbium-147 undergoes positron emission to become a stable atom, the stable atom is ₆₄Gd¹⁴⁷.
What are radioactive decay series?Series (or family) of natural radioactive decay is the set of elements with unstable nuclei, which follow an orderly sequence of spontaneous decay, that is, they emit alpha and beta particles, until a stable lead nucleus is created.
In this case, natural radioactive decay occurs when the nucleus of the atom of some chemical element is unstable and then it "breaks", releasing electromagnetic radiation and disintegrating.
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Balanced chemical equation for the combustion of biodiesel
Answer:
carbon dioxide + water+ energy+ soot+carbon monoxide
MARKING BRAINLIEST
answer
Acids are released and food is mixed and mashed into a soupy sludge in the ___________.
Answer: Is it multiple choice? The answer should be stomach.
Explanation:
Answer:
Blank = Stomach
The stomach mixes food with acids to create chyme, a, "soup" that helps digestive enzymes complete their work.
A student is balancing an equation in her chemistry class. What fact is she using to check her work?
A ).The number of atoms on each side of the reaction arrow must be different.
B).The number of atoms on each side of the reaction arrow must be the same.
C).The number of molecules on each side of the reaction arrow must be the same.
D).The number of elements on each side of the reaction arrow must be the same.
3Na+3CI+AI—>3Na+3CI+AI
Answer:
The answer is B. The number of atoms on each side of the reaction arrow must be the same.
Explanation:
Check your work to make certain you have the same number and type of atoms on the reactants side as on the products side
When the fish water had pH of 8.0, the hydronium ion concentration is 1.0x 10^-8 mole per liter. What is Hydornium ion con ent ration when water had pH of 7.0
The hydronium ion concentration when pH = 7 is : 8.75 * 10⁻⁹ mole/liter
Determine hydronium ion concentration when pH = 7
Given that :
pH = 8.0
Hydronium ion concentration = 1 * 10⁻⁸ mole/liter
Resolving the question
8.0 = 1 * 10⁻⁸ mole/liter
7.0 = x
therefore :
x = 7 ( 1 * 10⁻⁸ ) / 8.0
= 8.75 * 10⁻⁹ mole/liter
Hence we can conclude that The hydronium ion concentration when pH = 7 is : 8.75 * 10⁻⁹ mole/liter
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a.
Convert these temperatures to Kelvin:
A. -22 °C
b. 206 °C
C. 50 °C
d. 8 °C
Like this
-22°C + 273.15 = 251.15K
206°C + 273.15 = 479.15K
50°C + 273.15 = 323.15K
8°C + 273.15 = 281.15K
What is the best choice for cleaning up a water filter used in the filtration of unknown small particles from polluted stream water
Answer:
Reverse Osmosis
Explanation:
Reverse osmosis systems are able to remove more contaminants than carbon, making them a popular choice for many consumers.
Where are taste buds located?
the tongue and roof of mouth
the roof of the mouth only
the roof and side of mouth
the tongue only
the tongue and roof of the mouth
would be the answer
Answer:
The tounge and roof of the mouthExplanation:
Stay safe, stay healthy and blessed.Have a good day !Thank you !#Jennifer
What is the mass of one mole of product? (Remember the law of conservation of mass)
Answer:
To calculate the no. of moles you must know mass and molar mass of the product
Explanation:
# of moles = mass/molar mass
Name two other substances with giant covalent substances
Answer:
diamond, graphite (types of carbon) and silicon dioxide (silica).
Explanation:
Substances with giant covalent structures are solids with very high melting points. All the atoms are linked by strong covalent bonds, which must be broken to melt the substance.
7. Review Why do carbon atoms form four covalent bonds?
Answer:
four single covalent bonds
Explanation:
cuz a carbon atom initially has four unpaired electrons in its outermost shell....sharing adds four more....making four bonds
81. Predich Describe what might happen if you put a sealed glass container full of water into a freezer.
Answer:
When liquid water reaches the freezing point, it expands. After placing a sealed glass container full of water into the freezer, we might expect it to freeze, expand, and either crack or shatter the glass.
Explanation:
If 65.85g of N2 are placed in 17.5L container, the pressure is 1988 mmHg. What is the temperature of the gas?
Answer: The temperature of the gas if 65.85g of N2 are placed in 17.5L container with a pressure of 1988 mmHg is 1780. 6° C
Explanation:
The ideal gas law states that the volume, pressure and temperature of the a gas is related to the number of moles.
It is represented thus;
P V = n R T
Parameters :
Pressure, P = 1988 mmHg
Volume, V = 17.5 L
number of moles, n = mass ÷ molar mass
mass of N2 = 65.84g
Molar mass of N2 = 28.02 g/ mol
n = 65.85 ÷ 28.02
n = 2. 350 moles.
Temperature = ?
Universal gas constant, R = 8.314 J/mol. K
Calculations :
T = P V ÷ n R
T = 1988 × 17.5 ÷ 2.350 × 8.314
T = 34790 ÷ 19. 5379
T = 1780. 6 ° C
Thus, the temperature of the gas is 1780. 6 ° C
B. which of the reef organisms are consumers?
Answer: The primary consumers are zooplankton, corals, sponges, Atlantic blue tang, and queen conch.
Explanation:
Convert 4.92 L of hydrogen at STP to moles.
a 0.202 mol H2
b 0.444 mol H2
C 0.220 mol H2
d 4.55 mol H2
Answer:
c. 0.220 mol H₂
Explanation:
No. of moles
Volume present / Volume at STP4.92 L / 22.4 L0.220 mol H₂[tex]{\huge{\fcolorbox{yellow}{red}{\orange{\boxed{\boxed{\boxed{\boxed{\underbrace{\overbrace{\mathfrak{\pink{\fcolorbox{green}{blue}{Answer}}}}}}}}}}}}}[/tex]
[tex] \sf C) \: 0.220 \: mol \: H_2[/tex]
Explanation:
1 mol = 22.4 litres
4.92 = how many moles?
[tex] \sf \implies \frac{4.92}{22.4} \\ \\ \sf \implies 0.2196 \\ \\ \sf \implies 0.220 \: mol \: H_2[/tex]
Which elements will form a cation?
Oxygen
Helium
Magnesium
Sulfur
Answer:
Magnesium
Explanation:
Magnesium is a metalMetals have tendency to give up the electrons of the outermost shell and forms cation.[tex]Mg \longrightarrow Mg^{2+} + 2e^-[/tex]15.a. Classify the following alkanes according to their increasing density. C₂Hs , C2H56, C11H24, C₂H6. C36H74
The order of alkanes according to their increasing density can be seen below:
C₂H5C₂H6C2H56C11H24C36H74What is Alkane?This is referred to a hydrocarbon with a single carbon to carbon bond and examples include butane etc.
Its density increases with increasing number of carbon and hydrogen atoms thereby making it the most appropriate choice.
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What would the total surface area be if our large cube were divided into 8000 cubes with each side having a length of 1 cm?
48,000 cm2
8000 cm2
36,000 cm2
96 cm2
Answer:
48 000 cm^2
Explanation:
8000 1cm cubes
each 1 cm cube side is 1 cm^2 and there are six sides to the cube , so each cube has 6 cm^2 surface area
and there are 8000 of them 8000 * 6 cm^2 = 48 000 cm^2
Describe the steps, in detail, of creating a water compass. Please remember to write in complete sentences.
How much sample will remain after 40 days for as 200 g sample of Radon-222? The half-life of Radon-222 is 4 days.
Answer:
[tex]\boxed{N_t =0.1953125 \: grams}[/tex]
Explanation:
Formula:
[tex]N_t = N_0( { \frac{1}{2} })^{ \frac{t}{t_ \frac{1}{2} } } [/tex]
Where Nt is the amount of substance remaining after time t,
N0 is the amount of substance at time t = 0,
t is the time at which we have to find out how much substance disintegrated from t = 0 to t = t
& t_1/2 is the half life corresponding radioactive sample.
Given:
N0 = 200g
t= 40 days
t1/2 = 4 days
To find:
Nt =?
Solution:
Substituting given data in above formula,
[tex]N_t = N_0( { \frac{1}{2} })^{ \frac{t}{t_ \frac{1}{2} } } \\ N_t = 200( { \frac{1}{2} })^{ \frac{40}{4 } } \\ N_t = 200 \times 0.0009765625 \\ \boxed{N_t =0.1953125 \: grams} [/tex]
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Find the molarity of 194.55 g of sugar (c12h22o11) in 250. ml of water.
Put the following events in the order for a digital recording to become sound waves through a speaker. put the first event at the top of your list.
The events in the order of top to bottom for a digital recording to become sound waves through a speaker include:
Sound is encoded on a digital recording as an electrical signal.The digital recording plays the sound as an electrical signal.The electric signal moves through a voice coil.The voice coil produces a magnetic field.Changing the magnetic field pushes and pulls on the diaphragm.What is Sound wave?This is defined as a pattern of disturbance caused by movement of energy along a medium.
The order of events which produces the sound heard by audience can be seen above.
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Name these compounds according to IUPAC.
IUPAC is the universal nomenclature method that is used to give the names of the chemical compounds. The compounds are ethene, propionaldehyde, and propanone.
What are functional groups?Functional groups are the particular side groups that are added to the main chain to exhibit a specific property and character to the atom. In the first compound, the presence of the double bond makes it alkene, and the two carbons make the compound ethene.
The second compound has an aldehydic group with suffix -al and three carbon making it propanal, similarly, the third compound is propanone as it has ketone as the functional group and three carbon atoms in the chain.
Therefore, the compounds are ethene, propanal, and propanone.
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Which of these metals must release the most heat to expenence a given decrease in temperature per gram of metal? Aluminum, Lead, and Iron.
Aluminium is the metal which must release the most heat to experience a given decrease in temperature per gram of metal.
What is Thermal conductivity?This is as a result of free electrons and is the ability of a substance to conduct heat.
Aluminium has the highest thermal conductivity in this case which is why it will release the most heat to experience a given decrease in temperature per gram of it.
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Use the drop-down menus to classify each of the following compounds.
HR: H
HH
H-C-C-O-C-C-H
H-C-C-
-C-C-H
A
H
RETRY
>
-H
>
HH Br
H-C-C-C-H
Answer:
ester, ether, haloalkane
Explanation:
EDG.2022
Name these compounds according to IUPAC.
Answer:
10. Butanoic acid
11. Methylpropanoate
Explanation:
In this case first you need to identify the functional group,secondly identify the longest chain that contains the particular functional group:
10. The functional group for this compound is a carboxylic acid due to the "CHO2" group..we have four carbons which makes the parent chain to be butane.since it's acarboxylic acid we replace the "e" at the end to "oic acid".
11. The functional group is ester "RCOOR".For the ester the longest chain is counted from the part of the carboxylic acid which in this case is a propane,and the part from the alcohol becomes a substituent. With esters you replace the "e" at the end of the parent name to "oate". When you write it down you begin with the substituent in this case "methyl" and the rest follows...
hope it is clear enough
If you have 10,000 grams of a substance that decays with a half-life of 14 days, then how much will you have after 28 days?
Round to the nearest whole number.
Answer:
2500g
Explanation:
Half-life like the name suggests cuts the amount by half. So 10,000 grams would be 5,000 grams in one half-life (14 days). But 28 days is two halflives (14 + 14 = 28), thus 5,000 would be cut in half again to finally be 2500 g.
Weather is influenced by global patterns of atmospheric movement. Winds and
ocean currents are evidence for the process of
Winds and ocean currents are evidence for the process of regulating and stabilizing the climate patterns.
What are winds and ocean currents?Ocean current is the flow or movement of water in a direction by gravity, wind, and difference in density of the water.
Wind currents pull water and create ocean currents. The current flow to westwards, which is called Coriolis effect.
Thus, Winds and ocean currents are evidence for the process of regulating and stabilizing the climate patterns.
Learn more about ocean currents
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