Which of the following diagrams represents the winter in the southern hemisphere?
Answers
Answer:
Left position
If this don't help i am sorry but i tried
Explanation:
The figure is representing the motion of revolution of the Earth around the Sun.
This motion lasts approximately 365 days (one year). Since the axis of rotation of the Earth is tilted (by about 23 degrees from the vertical), the amount of light received by different parts of the Earth at the different part of the year is different.
In fact, we observe 4 "extreme" cases:
- Situation at the bottom: here the situation is symmetrical in the two hemispheres, which receive an equal amount of light. So, we have 12 hours of daylight and 12 hours of dark at every point on Earth - this is called equinox, and it occurs in September
- Situation on the right: here we see that the Southern Hemisphere receive much more light than the Northern Hemisphere - so the Southern Hemisphere has more hours of sunlight per day. This is called winter solstice, and it occurs in December - in this case, it is summer in the Southern Hemisphere and winter in the Northern Hemisphere
- Situation at the top: here the situation is symmetrical in the two hemispheres, which receive an equal amount of light. So, we have 12 hours of daylight and 12 hours of dark at every point on Earth - this is called equinox, and it occurs in March
- Situation on the left: here we see that the Northern Hemisphere receive much more light than the Southern Hemisphere - so the Northern Hemisphere has more hours of sunlight per day. This is called summer solstice, and it occurs in June - in this case, it is summer in the Northern Hemisphere and winter in the Southern Hemisphere
Related Questions
If there are 3.0 liters of gas at a pressure of 2.0 atm at constant temperature, what is the pressure if the volume is reduced by one half?
Answers
Answer:
The pressure is doubled, 4.0atm
Explanation:
Based on Boyle's law, the pressure of a gas is inversely proportional to its volume at constant temperature. The equation that describes this law is:
P1V1 = P2V2
Where P is pressure and V volume at 1, initial state and 2, final state of the gas.
Computing the values of the problem:
P1 = 2.0atm
V1 = 3.0L
P2 = ?
V2 = 3.0L / 2 = 1.5L
Replacing:
2.0atm*3.0L = P2*1.5L
6.0atmL / 1.5L = P2
4.0atm = P2
The pressure is doubled, 4.0atmIn the combined gas law if a variable is not constant you can remove it from the equation to reveal the gas law you need to solve a problem? True or false?
Answers
Answer:
False
Explanation:
In the chemical laboratory, why do scientists use a mortar and pestle?
A. To increase surface area of a solute
B. To decrease surface area of a solute
C. To increase temperature of a solute
D. To decrease temperature of a solute
Answers
Answer:
A. To increase surface area of a solute
Explanation:
This protein takes oxygen from hemoglobin in order to
O break down stored fats for energy.
O transport water-insoluble lipids in the bloodstream.
transport oxygen from the lungs to tissues around the body.
O store it for muscle cells.
Answers
Answer:
i'm pretty sure it's 'transport oxygen from the lungs to tissues around the body'
Answer:
Transportation of Oxygen from Lungs to Tissues
At 304 K, a 9.6 L tank contains 1.9 moles of H2 gas under an unknown pressure in atm. What is the pressure of the gas in the tank? (R = 0.0821 L*atm/mol*K)
Answers
Answer:
The pressure is 4.939 atm
Explanation:
As we know
PV = nRT
where P is the pressure
V is the volume
n is the total number of moles
R is the gas constant
and T is the temperature
Substituting the given values we get -
[tex]P * 9.6 = 1.9 * 0.0821 *304\\P = 47.420/9.6\\P = 4.939[/tex]
The pressure is 4.939 atm
Answer:
4.9 atm
Explanation:
What type of reaction occurs when energy is released?
Answers
If you were to add salt to water , what temperature would you expect it to boil? Assume you’re at sea level
100 c
More than 100 c
Less than 100 c
Answers
Answer:
100c
Explanation:
Describe at least 3 phases of thr water cycle and make sure to explain The state of matter of water at each of the phases
Answers
Which could be the pH of an aqueous solution with a H3O+ ion concentration that is less than its OH- ion concentration?
A. 2
B. 3
C. 4
D. 9
Answers
Answer:
Explanation:
You can think of pH as "parts Hydrogen ion," but remember that the pH scale is "backwards." The pH scale ranges from 0 to 14, with zero being the most acidic (highest concentration of H+) and 14 being the most basic.
The pH of an aqueous solution will be:
D. 9
When the [tex]H_3O^+[/tex] ion concentration is less than its [tex]OH^-[/tex] ion concentration.
What does pH tell?pH is used to indicate whether a solution is acidic or alkaline depending upon the pH of the solution. If pH is below 7 then the solution is acidic, if the pH is above 7 then the solution is basic and if the pH is 7 then the solution is neutral.
When the [tex]H_3O^+[/tex] ion concentration is less than its [tex]OH^-[/tex] ion concentration this means that the solution has more [tex]OH^-[/tex] ion and this makes the solution basic.
Thus, correct option is D, i.e. pH is 9.
Find more information about pH here:
brainly.com/question/24595796
How many atoms are in 1.204x10^22 moles of arsenic?
Answers
Answer:
0.02 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
We have
[tex]n = \frac{1.204 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.02[/tex]
We have the final answer as
0.02 molesHope this helps you
At 40 mph, how long does it take to travel 64 miles
Answers
explanation: don’t have one just trust me
A 5.00 mL sample of hydrochloric acid is titrated with 0.1293 M ammonia (a base). If the titration required 28.15 mL of ammonia, determine the following:
the original concentration of the acid
the original pH of the acid
Answers
Answer:
1. C = 0.73 M.
2. pH = 0.14
Explanation:
The reaction is the following:
HCl + NH₃ ⇄ NH₄⁺Cl⁻
From the titration, we can find the number of moles of HCl that were neutralized by the ammonia.
[tex] n_{a} = n_{b} [/tex]
Where "a" is for acid and "b" is for base.
The number of moles is:
[tex] n = C*V [/tex]
Where "C" is for concentration and "V" for volume.
[tex] C_{a}V_{a} = C_{b}V_{b} [/tex]
[tex] C_{a} = \frac{0.1293 M*28.15 mL}{5.00 mL} = 0.73 M [/tex]
Hence the initial concentration of the acid is 0.73 M.
The original pH of the acid is given by:
[tex] pH = -log([H^{+}]) [/tex]
[tex] pH = -log(0.73) = 0.14 [/tex]
Therefore, the original pH of the acid is 0.14.
I hope it helps you!
When the pressure is 1.22 atm, a sample of hydrogen gas has a volume of 1.88L. What is its volume if the pressure is increased to 1.45 atm?
Answers
Answer:
1.58 L
Explanation:
Use Boyle's law, which is defined as
p1v1 = p2v2
In this case we're solving for V2 because the rest of the variables are given.
p1 = 1.22 atm
v1 = 1.88L
p2 = 1.45 atm
v2 = ?
p1v1 = p2v2
(1.22 atm)(1.88L) = (1.45 atm)(v2)
v2 = (1.22 atm)(1.88L) ÷ (1.45 atm) = 1.58 L
Match each chemical reaction with the type of reaction that best describes it
Answers
Explanation:
Types of Chemical ReactionCombination Reaction.Decomposition Reaction.Displacement Reaction.Double Displacement Reaction.Oxidation and Reduction Reaction.stay safe healthy and happy.
Complete the sentence. A substance that is more basic has a___pH
than a substance that is acidic. *
the same
higher
lower
none of the above
Answers
Answer:
Higher
Explanation:
How many Oxygen atoms are in 2NA(OH)3
Answers
Answer:
3 oxygen atom
hope it helps.
Answer:
Explanation:
There are 3 oxygen atoms.
have a nice day!Can you choose me brainliest?
What are the different types of excretion?
Answers
Answer:
There are 4 excretory organs in human: The skin, the lungs, the liver, and the kidney (Urinary system). The skin excretes the sweat outside the body through numerous pores in the surface of this organ. Sweat is a mixture of three metabolic wastes: water, salts, and urea.
This refers to the most powerful means of communicating confidence and conviction A.Posture B.eye contact C.body movement
please
please
please
please
ples
please
please
please help me
Answers
Answer:
c
Explanation:
the way you move explains how confident you are
There is 1 mole of propane (C3H8) for every 3 moles CO2. How many moles of CO2 would there be if you started with 2 moles of propane instead of 1?
Answers
Answer:
[tex]1 \: mole \: of \: propane \: reacts \: with \: 3 \: moles \: of \: carbondioxide \\ 2 \: moles \: of \: propane \: react \: with \: \frac{2 \times 3}{1} moles \\ = 6 \: moles \: of \: carbondioxide[/tex]
you had a 5 gram sample , how much of the original substance would remain after 1 half- life?
Answers
what is the half life though?
zA 25.0 mL sample of an acetic acid solution is titrated with a 0.175 M NaOH solution. The equivalence point is reached when 12.5 mL of the base is added. The concentration of acetic acid in the sample was ________ M. A 25.0 mL sample of an acetic acid solution is titrated with a 0.175 M NaOH solution. The equivalence point is reached when 12.5 mL of the base is added. The concentration of acetic acid in the sample was ________ M. 0.365 0.119 0.0875 0.175 none of the above
Answers
Answer:
0.0875M of Acetic Acid
Explanation:
Based on the reaction of acetic acid (HX) with sodium hydroxide (NaOH):
HX + NaOH → NaX + H₂O
1 mole of acetic acid reacts with 1 mole of NaOH
That means the moles of sodium hydroxide added = Moles the acetic acid at the equivalence point.
To solve this question we have to find the moles of NaOH = Moles HX. With the moles and the volume (25.0mL = 0.0250L) we can find the molarity of the acetic acid:
Moles NaOH = Moles Acetic acid:
12.5mL = 0.0125L * (0.175mol / L) = 0.00219 moles Acetic Acid
Molarity acetic acid:
0.00219 moles Acetic Acid / 0.0250L =
0.0875M of Acetic AcidThe table shows data about abiotic factors of streams in two different watersheds.
In general, a stream with a lower temperature and more neutral pH tends to be
healthier. Based on these criteria, which watershed contains the healthier
stream?
Answers
Answer:
B
Explanation:
Explain why crystallisation can't be used to prepare calcium carbonate.
Answers
Explanation:
The mechanisms by which amorphous intermediates transform into crystalline materials are poorly understood. Currently, attracting enormous interest is the crystallization of amorphous calcium carbonate, a key intermediary in synthetic, biological, and environmental systems. Here we attempt to unify many contrasting and contradictory studies by investigating this process in detail. We show that amorphous calcium carbonate can dehydrate before crystallizing, both in solution and in air, while thermal analyses and solid-state nuclear magnetic resonance measurements reveal that its water is present in distinct environments. Loss of the final water fraction—comprising less than 15% of the total—then triggers crystallization. The high activation energy of this step suggests that it occurs by partial dissolution/recrystallization, mediated by surface water, and the majority of the particle then crystallizes by a solid-state transformation. Such mechanisms are likely to be widespread in solid-state reactions and their characterization will facilitate greater control over these processes.
Which gas would you expect to have the fastest diffusion rate?
A. Ammonia (NH3)
B. Oxygen (O2)
C. Nitrogen (N2)
Answers
O nióbio é um metal encontrado em jazidas naturais, principalmente na firma de óxidos. Em uma jazida que contenha nióbio com número de oxidação +5, a formula do óxido predominante desse metal corresponde a:
Answers
Answer:
what
Explanation:
if an electrically neutral atom has 57 protons how many electrons does it have?
Answers
Answer: 57
Explanation: Because the atom is neutral, it’s #e= Protons + zero charge (for all neutral atoms)
Hence, #e= 57+0=57 electrons
An electrically neutral atom have 57 protons so it will be having 57 electrons .
What do you mean by electrically neutral atom ?An atom is electrically neutral when the overall charge of an atom is zero. The atoms are made of three subatomic particles called protons, electrons and neutrons.
Protons are positively charged particles, electrons are negatively charged and neutrons are neutral.
The number of electrons is equal to the number of protons due to which positive and negative charge cancels each other out.
According to the question,
Because the atom is neutral , it’s
Electrons= Protons + zero charge (for all neutral atoms)
Hence,
Electrons= 57+0
=57 electrons
Hence, an electrically neutral atom have 57 protons so it will be having 57 electrons .
Learn more about neutral atom , here:
https://brainly.com/question/5308494
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I'm like a highway system in your body. I carry necessary supplies to the parts of your body that need llen, allu
carry away wastes so your body can get rid of them. I contain blood vessels and am a system with a lot of heart.
What system am I?
1:digestive system
2:circulatory system
3: muscular system
4:skeletal system
plssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss sssssssssssssssssss sssssssssssssssssss sssssssssssssssssss sssssssssssssssssss answer this correctly
Answers
Answer:
The circulatory system
Explanation:
Hope this helps
An apple appears red when struck by white light. This appearance is because the red light is reflected and the other colors are absorb. What color will this apple appear to be when struck by blue yet.
A. black
B. blue
C. red
D. white
Answers
please help I have 50 questions for just SCIENCE :(
Answers
Identify the element that cannot participate in nuclear fission reactions. (Hint: Think about the size of the atom.)
A.
hydrogen
B.
uranium
C.
thorium
D.
plutonium