Which of the following would SLOW DOWN the rate of chemical
weathering?*
Decreasing surface area
Increasing the temperature
Increasing rainfall
O Increasing surface area
Answer:
increasing rainfall. hope it help
PLEASE HELP ME!!!
which stage takes place before the one in the diagram above?
A. metaphase 1
B. metaphase 2
C. telophase 1
D. telophase 2
Answer:
C. telophase 1
Answer:
metaphase 2
Explanation:
How many moles of iron is needed to react completely with 5.00 moles of sulfur to form iron
Fe + S -->
no
Answer:
5 moles of Fe(II) are required to react completely with the 5 moles of Sulphur
Explanation:
The balanced equation in this question is
Iron + Sulfur = Iron(II) Sulfide
Fe (II) + S --> Fe(II)S
Thus one mole of sulfur reacts with one mole of Fe(II)
Hence, 5 moles of Fe(II) are required to react completely with the 5 moles of Sulphur
Change 60. miles/hour to km/min?
Which characteristic is true of sexual reproduction but not of asexual reproduction?
Answer:
j one or more parents. that's the answer
How are stars and comets different?(2 points)
A star has a solid rock and gas surface, while a comet has tail of dust and gas.
A star has a tall of dust and gas, while a comet has a solid rock surface.
A star is made up of burning gases, while a comet is made up of ice, gases, rocks, and dust.
A star is made up of Ice, rocks, and dust, while a comet is made up of burning gases.
Answer:
A star is made up of burning gases, while a comet is made up of ice, gases, rocks, and dust.
Explanation:
Answer:
Its D "A star is made up of Ice, rocks, and dust, while a comet is made up of burning gases."
Explanation:
Explain why is ortho nitrophenol more acidic than ortho methoxyphenol
Answer:
Ortho nitrophenol is more acidic than ortho-methoxyphenol.
Reason:
This is because the nitro-group is an electron-withdrawing group. In the case of ortho methoxyphenol; methoxy group is an electron-releasing group. Thus, it increases the electron density in the O−H bond and hence, the proton cannot be given out easily.
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SCIENCE
What is the relationship between a need
in society and a system?
Answer:
The relation between individual and society is very close. Essentially, “society” is the regularities, customs and ground rules of antihuman behavior. These practices are tremendously important to know how humans act and interact with each other. Society does not exist independently without individual.
Explanation:
Is this the right answer
Answer:
srgerhe5h4hebdfbdfdfnafyn
Explanation:
Ammonia (NH3) reacts with oxygen (O2) to produce water and nitric oxide (NO). How many grams of water are produced when 22.5 grams of oxygen are reacted?
With reference to He-4 (or the diagram), explain the term isotopes.
Answer:
Isotopes are basically atoms of an element that have an unequal number of neutrons and protons. Of course the proton number remains the same, but the neutron number either decreases or increases, which leads to an overall change in mass. However, no chemical properties of the atom/element are changed as the electrons are the same number and do not react. In regards to Helium 4, the original number of neutrons in Helium is 2, and protons 2 as well. We see an equal number of neutrons and protons, hence an unchanged mass, and the element is not an isotope.
Consider the following reaction:
Cl2 + Na2S -> 2NaCl + S
The percent yield of sulfur when 71.0 g of Cl2 is reacted in excess Na2S solution is 73.0 %.
What is the actual mass of sulfur yielded by this reaction?
(Molar mass of S = 32.1 g/mol, molar mass of Cl2 = 71.0 g/mol)
__ g
Answer:
23.4
Explanation:
23.4 g mass of sulfur yielded by this reaction.
[tex]Percentage yield = (Actual / Theoretical)\times 100[/tex]
The theoretical yield for S is as follows:-
[tex]71.0\ gCl_2\times\frac{1\ molCl_2}{71\ g Cl} \times\frac{1}{1} \ mol\times\frac{32.1\ g}{molS} =32.1\ gS[/tex]
Actual yield=[tex]32.1\ gS\times73\%=23.4\ g\ S[/tex]
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Sophia was fascinated while studying the role of oceans in the hydrosphere. She decided to illustrate the features of the ocean floor on a poster for her part in a group project. Identify and describe the kinds of features found on the ocean floor.
Answer:
The Major features of the ocean floor are:
Continental ShelfContinental SlopeContinental RiseAbyssal PlainOceanic TrenchMid-Ocean RidgeExplanation:
1. Continental Shelf: This refers to the part of the land on every continent that is covered with water that is not too deep. The types of animals that can be found on the continental shelf are:
Crab, Tuna, Lobster, Dungeness cod, etc. Within the Continental shelf, there are permanent rocks that house other organisms such as sponges, anemones, clams, sponges, oysters. The continental shelf also contains the route of migration for bigger animals such as sea turtles dolphins and even whales.
2. Continental Slope: This spans from the shelf break to the continental rise. It can slope up to 4 degrees. Slopes can be created by faulting, slumping of huge boulders of sediments, rifting, etc.
Some of the aquatic animals that can be found in this region include but are not limited to:
Sablefish, Dover sole rockfish, etc.
3. Continental rise
This part of the ocean floor usually has a very steep gradient or angle slope. It slopes very steeply into the abyssal plain of the ocean.
The following can help form continental rise:
Mass wasting;deposition from contour currents and the longitudinal settling of biogenic and clastic particles4. Abyssal Plain.
This is the real bottom of the ocean. There is a very high probability that one would find animals such as nematodes, polychaetes, etc which are all types of worms down there. The Abyssal plain is also home to molluscs, and echinoderms.
5. Oceanic Trench
Sometimes there is a long and narrow indenture or depression along the seafloor. These are called Trenches. Trenches are sometimes formed by the boundaries between one lithospheric plate and another. The deepest trench on earth is found in the Pacific Ocean. It has been nick-named the Challenger Deep and said to be the deepest point known on earth reaching almost 11 kilometers.
6. Mid-Ocean Ridge
This is a mountain range underneath the ocean. It is formed when there is an upward push by convection currents of the mantle beneath the oceanic crust. When this happens and molten magma is ejected or created at the boundary between the plates, the result is a Mid-Oceanic Ridge.
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Another student suggests putting some cotton wool in the top of the flask.
Suggest why this improves the investigation. *
(1 Point)
Answer:
B proofread the message.
Explanation: Hope this helped
Na2S + HCl NaCl + H2S NaCl Na + Cl2 Na2S + HCl NaCl + H2S balancing chemical equation
Answer:
Na2S + 2HCl -------------------> 2NaCl + H2S.
2NaCl --------------------------> 2Na + Cl2
Na2S + 2HCl ---------------> 2NaCl + H2S
Explanation:
Stoichiometry Is one of important aspect of Chemistry that will be taught to student learning chemistry. It shows the relationship between the reactants and the product. For instance, the amount a reactant reacts to form the products and the amount of products formed.
The balanced chemical reaction for the equation of reaction given in the question is given below;
Na2S + 2HCl -------------------> 2NaCl + H2S.
One mole of Na2S reacts with 2 Moles of HCl to produce 2 moles of NaCl and one mole of H2S.
2NaCl --------------------------> 2Na + Cl2
Two moles of NaCl breaks down into 2 moles of Sodium(solid) and one mole of Chlorine.
Na2S + 2HCl ---------------> 2NaCl + H2S
One mole of N2S reacts with 2 moles of HCl to produce 2 moles of NaCl and one mole of H2S.
Please help me!!!!! I REALLY NEED HELP!!! What is my carbon footprint and how can I reduce it?
Answer:
your carbon footprint is how often you use a car of vehical you can decreese it by riding a bike or walking.
Explanation:
Carbon footprint is like when you ride a car and it produces lots of carbon monoxide in the air. Ways to reduce it is by walking, riding a bicycle or using the bus for transportation. Hope this helps.
What happens to the hydrogen-hydrogen and nitrogen-nitrogen bonds?
Answer:
hydrogen nitride
Explanation:
since they are bounding they would become a compound, and so it would need to expand
solution containing more solute than can theoretically dissolve at a given temperature
Answer:
Explanation:correct because the chlorine can make it change so the soulation is dissloving
A typical tincture of iodine contains about 2.0% iodine by mass. Calculate
the mass of iodine in a 500. g tincture.
how are inclined planes used in the real world
Answer:
hi
Explanation:
Inclined planes are widely used to move heavy loads over vertical obstacles; examples vary from a ramp used to load goods into a truck, to a person walking up a pedestrian ramp, to an automobile or railroad train climbing a grade. ... The screw consists of a narrow inclined plane wrapped around a cylinder.
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anyone know this? i’m having trouble...please help.
What is the SI unit of time?
A.
second
B.
minute
C.
hour
D. day
Answer:
option a. second
.............
What is the purpose of a spectroscope? *
A. to spread light into different wavelengths
B. to study a star's composition
C. to study a star's temperature
D. all of the above
PLEASE HELP!!
In order to produce CO2, a student put a sample of calcium carbonate in a flask and added hydrochloric acid using the following equation: Ca(CO3) + HCl → H2O + CO2 + CaCl2 The student finds the mass of CO2 generated to be 100 g. If the student began with 200 g of HCl and there was ample CaCO3 left unreacted, what was the percent yield?
Answer:
82.9% Is the percent yield
Explanation:
First, we need to balance the equation.
Ca(CO3) + 2HCl → H2O + CO2 + CaCl2
Since the problem tells you that the excess reactant is Ca(CO3), we just need to Stoichiometry to solve for the theoretical yield.
[tex]\frac{200g HCl}{1}[/tex] x [tex]\frac{1 mole HCl}{36.46gHCl}[/tex] x [tex]\frac{1 mol CO2}{2molHCl}[/tex] x [tex]\frac{44.01CO2}{1molCO2}[/tex] =120.707 g (theoretical yield)
Take your actual yield of 100g, divide that by 120.707, then multiply that decimical by 100.
Identify the type of reaction and the products. AlP ->
Answer:
Decomposition and Al and P
they might be looking for thermal decompositioin as this one happens at 2000 degrees
Explanation:
Minerals are part of the Geosphere, which is composed of several layers.
O True
O False
what is the primary pigment found in the chlotopast
Answer: Chlorophyll is a green photosynthetic pigment found in plants, algae, and cyanobacteria.
Chlorophyll absorbs mostly in the blue and to a lesser extent red portions of the electromagnetic spectrum, hence its intense green color.
Green substance in producers that traps light energy from the sun, which is then used to combine carbon dioxide and water into sugars in the process of photosynthesis Chlorophyll is vital for photosynthesis, which helps plants get energy from light.
Chlorophyll molecules are specifically arranged in and around pigment protein complexes called photosystems, which are embedded in the thylakoid membranes of chloroplasts.
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Some seawater is evaporated. The sea salt obtained is found
to be 86% sodium chloride. How much sodium chloride
could be obtained from 200 g of this salt?
Answer:
the answer is 172g
Explanation:
200 × 0.86 = 172g
can someone help me with all of those pls!!!!
When two objects with neutral charges are brought together, the objects
a. attract each other
b. repel each other
c. all of the above
d. none of the above
Answer:
a. attract each other
Explanation: