As greenhouse gas emissions from human activities increase, they build up in the atmosphere and warm the climate, leading to many other changes around the world—in the atmosphere, on land, and in the oceans.
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What eventually happens to all the energy in a food web? The energy in a food web finally??????
Answer:
All of the consumers and producers eventually become nourishment for the decomposers.
Explanation:
Energy is transferred between organisms in food webs from producers to consumers. The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.
The equation shows the reaction between magnesium and chlorine to produce magnesium chloride.
Mg + Cl2 → MgCl2
Magnesium chloride consists of Mg2+ and Cl− ions.
Describe, in terms of electrons, how magnesium chloride is produced from magnesium and chlorine.
Answer: Mg is a cation and Cl is an anion
Explanation: In more detail, if you look at the periodic table, the group number (or columns) of the elements, describe how many valence electrons, or how many electrons the element has available to have a complete an electron shell. Magnesium being in group 2, it has one 2 electrons that will be "donated" to an anion that it bonds with. However, Chlorine being in group 17, (look at the single digit number for double digit groups), it has 7 valence electrons. Knowing that a full electron shell is usually 8 electrons, it needs only one. Since Magnesium has 2 valence electrons to give away, two atoms of Chlorine gas will then bind to the Magnesium, where the 2 Chlorine atoms will take the electrons to fill their shells. Magnesium Chloride, in terms of charges when in ions, [Mg]2+ and 2 [Cl]-1
Magnesium chloride is formed when magnesium ion formed from the loss of two electrons and two chloride ions formed by accepting one electron each are held together by electrostatic attractive forces.
How is magnesium chloride formed from magnesium and chlorine?Magnesium chloride is an ionic compound which consists of magnesium ions and chloride ions.
A Magnesium atom forms ion by giving up two electronsTwo Chlorine atoms become ions by accepting one electron each.The oppositely-charged ions are attracted to each other.Therefore, magnesium chloride is formed when magnesium ion formed from the loss of two electrons and two chloride ions formed by accepting one electron each are held together by electrostatic attractive forces.
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True or False - Changing the temperature will not affect the pressure of the mixture?
Answer:
False
Explanation:
Let's break down the equation PV=nRT.
P=Pressure
V= Volume
n= number of mole
R= the universal constant
T= Temperature
The = sign is the barrier between them. Whenever one side of the equation increases, something on the other side is directly impacted. When Temperature increases, so will pressure--and vise versa.
What is always true of a strong base?
A. It does not dissociate at all in solution.
B. None of the original base remains in solution.
C. It partially dissociates into ions in water.
D. It forms a very concentrated solution when dissolved in water.
Explanation:
None of the original base remains in solution.
Answer:
C
Explanation:
what is the reactant of 2Fe2O3 = 4Fe + 3O2
It depends on the direction of the arrow.
If the arrow goes like this ---> the reactant would be 2Fe2O3
If the arrow goes like this <--- the reactants would be 4Fe + 3O2
PLEASE HELP ME SCIENCE I AM HORRIBLE AT HELPPPPP
Answer:
1. An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials. Groundwater can be extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology.
2. watershed
Simply put, a watershed is “all the land area where the rain runs downhill to a certain point,” explains Carolyn Staudt, who leads NSF-funded science projects at the Concord Consortium on land use and its effects on water resources.
3. Healthy watersheds provide critical services, such as clean drinking water, productive fisheries, and outdoor recreation, that support our economies, environment and quality of life
What is an aquifer : natural underground storage area
What is the name for the land area where all rain runs downhill to a certain point : collection? normally would be called watershed.
Why are watersheds important for the maintenance of water quality : 1, 2
Help, please I’m very confused
Answer:
chemical is fire
and ductility is physical
Explanation:
give me brainliest please
what events are typically earthquakes near large bodies of water
Answer:
tsunamis
they are literally water earthquakes that force tons of water ashore and wipes out cities and towns
i need help with this asap pls help if you can. pls, don't take the points if you don't know.
hope this is correct / it helps
True or False gases have indefinite shapes because gas molecules are constantly
changing their positions.
Answer:
True
Explanation:
Gases don't have any shape or form, so they could not be definite.
What is the formula for manganese (IV) bromide?
Answer:
MnO₂
Explanation:
What is meaning by O=O..in energy bond
Answer:
um that looks like a molecular bond, but in energy bond, that would be a solid form i guess, it looks like two of the same atoms are fused together to create a molecular bond.
Explanation:
Answer: bond pair of O-O bond to a greater extent than the lone pair of electrons on the sulfur atoms in S-S bond....as a result S-S bond (bond energy=213 kj/mole)is much more stronger than O-O(bond energy = 138 kj/mole) bond …
Explanation: pls answer my question from my profile.
The area of a rectangle can be found by multiplying its length by its width. What is the area of a rectangle that is 5.6 cm in length and 9.24 cm wide?
Report your answer with the correct number of significant figures.
Answer:
Area = 51.74cm ²
Explanation:
5.6 × 9.4 = 51.744
Round above answer
= 51.74
what must happen first before a change of state can occur (change in mass, change in position, change in volume, or change in energy)
Answer:
Change in energy.
Explanation:
An energy change is required to shift one state to another or do any of the other listed.
Atmosphere pressure is about 100000 Pa. Calculate the force of the Atmosphere on a person whose Surface area is 2.0m
Answer:
The force of the atmosphere 200 KN.
Explanation:
Pressure is the ratio of force applied to the area to which the force is applied.
i.e Pressure = [tex]\frac{Force}{Area}[/tex]
But, Pressure = 100000 pa (100000 N/ [tex]m^{2}[/tex]), and surface area = 2.0 [tex]m^{2}[/tex]
Thus,
100000 = [tex]\frac{Force}{2.0}[/tex]
⇒ Force = 100000 x 2.0
= 200000
Force = 200 KN
The force of the atmosphere 200 KN.
Why is light helpful? You can just give one reason
Answer:
to give off positive vibes <3
Explanation:
C3H8 +502 + 3CO2 + 4H2O
How many grams of CO2 will be produced from 7.00 g of C3H8 and 98.0 g of O2?
Answer:
Explanation:
first, you calculate the amount of O2 in moles:
98.0 ÷ 32 = 3.0625
second, the ratio if O2/C3H8 is 5 so you need to calculate O2 in moles with that:
3.0625 ÷ 5 = 0.6125
third, the amount of CO2 in moles also can be calculate by the ratio of C3H8/CO2 which is 3
0.6125 × 3 = 1.8375
then multiply CO2 in moles by its molar mass which is 44 g/mol
1.8375 × 44 = 80.85g
20 A student draws the model shown below.
Sun
Earth
Which of these best compares the conditions at Location X and Location Y?
F It is day at Location X and night at Location Y.
GIt is winter at Location X and summer at Location Y.
H There are more hours of daylight at Location X than at Location Y.
1 The moon is brighter when viewed from Location X than when viewed from Location Y.
Answer:
There are more hours of daylight at Location X than at Location Y.
Explanation:
The student has created a model in the diagram in which sun and earth are presented. There are two point location on earth one is x and other is y. The x point is declined towards the sun which means that locations on point x receives more light than location Y. There will be more hours of daylight at Location x.
The best comparison of the conditions at Location X and Location Y is there are more hours of daylight at Location X than at Location Y.
What is the Sun and the Earth?The sun is the big spherical of heat and energy. The sun gives light. The Earth is the third planet of our solar system.
Thus, the correct option is C, There are more hours of daylight at Location X than at Location Y.
Learn more about Sun and the Earth
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Is adding manganese dioxide to hydrogen peroxide, a chemical or physical change?
Answer: chemical change as a new product is formed
Explain why 6.02x10^23 particles of NaCl has a mass of 58.44 grams
Look at the image above, that should answer your question
H3COH3 lewis dot structure
Answer:
The Lewis structure of CH3OCH3 is dimethyl ether, the simplest ether in existence
Explanation:
name the first artificially prepared fiber
. nylon
. rayon
. silk
. polymers
Answer:
Nylon
Explanation:
Nylon was the first synthetic fiber made in the "fully synthetic" sense of that term. It was made by Wallace Carothers, an American researcher at the chemical firm DuPont in the 1930s.
How many moles of tungsten carbide will be produced if plenty of tungsten is reacted with 1.25 moles of carbon?
Answer:
1.25 moles of tungsten carbide
Explanation:
Tungsten carbide, WC, is a substance that is produced prom carbon and tungsten as follows:
W + C → WC
Based on the reaction, 1 mole of Carbon produce 1 mole of tungsten carbide. That means if 1.25 moles of carbon are added in excess of tungsten, the moles of tungsten carbide produced are:
1.25 moles of tungsten carbideCalcium and Gold (III) Bromide react. Will this reaction proceed?
If it does proceed, write the balanced chemical equation below.
SHOW WORK
What volume of concentrated nitric acid (15.8 M) is needed to prepare 4.0 L of a 2.0 M solution?
what information is needed to determine the amount of moles in 1.6g of HCL?
Answer:
Molar mass and Mass
Explanation:
The relationship between mass and number of moles is given as;
Number of moles = Mass / Molar mass
Mass = 1.6 g
Molar mass of HCl = ( 1 + 35.5 ) = 36.5 g/mol
Number of moles = 1.6 g / 36.5 g/mol
Number of moles = 0.0438 mol
which statement about the earth atmosphere is true
A.recent incease in carbon dioxide levels can contribute to a long--term cooling of eath's climate. B.a recent decrease in carbon dioxide levels will incease plant growth on eath.c.in the past few decades,carbon level has been rising.D.in the past few decades,carbon level has been falling
define "seperation by evaporation"
answer only if u know
have a great day
can someone help me pls
Answer:
The heat would flow from the hot solid to the cool solid until all temperatures are near equal.
СН2OH - CHOH - СН2ОН