Answer:The ocean takes up carbon dioxide through photosynthesis
Explanation: by plant-like organisms (phytoplankton), as well as by simple chemistry: carbon dioxide dissolves in water.As we burn fossil fuels and atmospheric carbon dioxide levels go up, the ocean absorbs more carbon dioxide to stay in balance.
if you are rationed to 32 gills of fresh water a day. how many liters is this?
Answer:
3.8 LITERS
Explanation:
What interest rate would be necessary to obtain $5,500 in 7 years if $4,000 is the amount of the original investment and the interest is compounded yearly?.
Given what we know, we can confirm that the interest rate necessary to reach $5500 in 7 years with a starting investment of $4000 on a yearly compounded interest, would be 4.7%.
Why is this the required interest rate?Since the question did not specify any extra data to be taken into account, such as:
Interest varianceMonthly or yearly contributionsInflation ratesand so on, we can assume that all of these values are null. Therefore, if we take $4000 and add 4.7%, and repeat that every time using our new totals, after 7 repetitions we are left with close to $5500, which is our goal.
Therefore, we can confirm that the interest rate necessary to reach $5500 in 7 years with a starting investment of $4000 on a yearly compounded interest, would be 4.7%.
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how many unbonded pairs of electrons are found on the alanine molecule
Answer:
I'm hoping this helps!! it's on quizzes if you're wondering
Is it safe to inhale essential oils from a diffuser?.
What is the first thing you have to do if there is a fire in the lab.
The first thing you should do when there is a fire in the laboratory is to alert people.
What is OSHA?OSHA is an abbreviation for occupational safety and health administration.
The main purpose of OSHA.The Occupational Safety and Health Administration (OSHA) is an agency of the federal government that is saddled with the following responsibilities:
Assuring and ensuring safe and healthy working conditions for employees or workers.Setting and enforcing standards, rules, and laws.Providing education, trainings and assistance to various organizations.According to the Occupational Safety and Health Administration (OSHA), the first thing a worker or student should do when there is a fire in the laboratory is to alert people.
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2C2H2(g) 5O2(g) → 4CO2(g) 2H2O(g) This is a balanced equation for the combustion of acetylene(C2H2). How many moles of oxygen(O2) are required to react completely with 1. 0 mole of acetylene(C2H2)?.
The moles of oxygen required to completely react with 1-mole acetylene is 2.5 mol.
The moles of reactant and product in a chemical reaction to the whole number ratio is given by the stoichiometric coefficient of the balanced chemical equation.
Computation for the moles of oxygenThe balanced chemical equation for the reaction is :
[tex]\rm 2\;C_2H_2\;+\;5\;O_2\;\to\;4\;CO_2\;+\;2\;H_2O[/tex]
From the balanced chemical equation, the 2 moles of acetylene react with 5 moles of oxygen.
The moles of oxygen react with 1 mole of acetylene are:
[tex]\rm 2\;mol\;C_H_2=5\;mol\;O_2\\\\1\;mol\;C_2H_2=\dfrac{5}{2}\;\times\;1\;mol\;O_2\\\\ 1\;mol\;C_2H_2=2.5\;mol\;O_2[/tex]
The moles of oxygen required to completely react with 1-mole acetylene is 2.5 mol.
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What characteristics best describe an asteroid?
It revolves around a planet and is larger than the planet.
It revolves around a planet and is much smaller than the planet.
It revolves around the sun and is much smaller than a planet.
It rotates on its axis and is the center of the solar system.
Answer:
C
Explanation:
Take my word.
Hope this helped.
Answer:
C: It revolves around the sun and is much smaller than a planet.
Explanation:
An asteroid is a rocky or metallic object that orbits, revolves around, the Sun and is much smaller than a planet. - Trust your Teacher here.
Twenty students were surveyed to find out how
many hours of TV they watch during a school
week. The results are shown to the right Answer
the following questions and round your answers to
the nearest half hour
The range of the data is
hours
DONE
Answer:
this is good question I am thankful to you
Answer:
The range of the data is 11 hours
Explanation:
edge 2022, trust
Imprints of the shells of ocean clams are often found in the rocks of the Appalachian Mountains. What do these imprint fossils MOST likely indicate?
O A. These mountains were once under the ocean.
OB. These mountains once had a more rainy climate.
OC. Mountain river clams evolved from ocean clams,
OD. Ocean clams evolved from mountain river clams.
How would understanding the properties of matter be helpful.
Explanation:
Matter is the basic unit of all things in the world, whether living or nonliving. It is not only useful in chemistry, but also to other fields of science like physics. Physics deals with motion, so it has something to do with matte especially the movement of molecules for solids and fluids.
What type of chemical bond involves the sharing of a pair of electrons by two atoms in a molecule.
Answer:
Covalent bond.
Explanation:
There are two kinds of chemical bonds: covalent bonds and ionic bonds.
A covalent bond is formed when two atoms share a pair of electrons (two electrons for each bond.)Ions are formed when one atom transfers an electron to another. Ionic bonds refer to the attraction between ions of opposite electric charges.In this example, since the atoms are sharing atoms, the chemical bond between them would be a covalent bond.
Why should you always condition a buret before running a titration?.
Answer:
Conditioning two or three times will insure that the concentration of titrant is not changed by a stray drop of water.
Explanation:
"Check the tip of the buret for an air bubble. To remove an air bubble, whack the side of the buret tip while solution is flowing".
Can y'all please help me
thank you
Answer:
When water moves through the water cycle, it changes between these states of matter over and over again. The water cycle is the process that moves water between the air and Earth's surface. ... With enough energy, the molecules of liquid water change into water vapor and move into the air. Think of the many ways that the hydrosphere and the atmosphere connect. ... The geosphere, in turn, reflects the sun's energy back into the atmosphere. The biosphere receives gases, heat, and sunlight (energy) from the atmosphere. It receives water from the hydrosphere and a living medium from the geosphere.
what is the acid name for H(HS)
need help asap
The acid name for H(HS) is hydrogen sulfide.
Properties of hydrogen sulfidHydrogen sulphide is an example of a weak acid that is form by the exposure of many metals and non metals to water.
The International Union of Pure and Applied Chemistry (IUPAC) acidic name for H( HS) is hydrogen sulfide. But is also called sulfane, sulfur hydride, sour gas, sulfurated hydrogen, hydrosulfuric acid.
The properties of hydrogen sulfide include:
In low concentrations it smells like rotten eggs,H(HS) is soluble in water and many other liquids,H(HS) is highly explosive,lH(HS) is colourless and has a reflective ratio very similar to that of air.Therefore, the acid name for H(HS) is hydrogen sulfide.
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______ are organic molecules characterized by large areas that contain many nonpolar carbon-carbon and carbon-hydrogen bonds, making them hydrophobic.
Answer:
Lipids are organic molecules characterized by large areas that contain many nonpolar carbon-carbon and carbon-hydrogen bonds, making them hydrophobic.
Draw the electron dot structure for the hydrogen carbonate ion hco3-. Carbon is the central atom, and hydrogen is attached to oxygen in this polyatomic anion.
Explanation:
this is your answer hope it will help you
Which element would you find in group 2 that has 3 electron shells?
calcium
strontium
magnesium
aluminum
Magnesium
First shell has 2
Second has 8
Third has 2
What are the functions of nervous system
Answer:
Your nervous system is your body's command center. Originating from your brain, it controls your movements, thoughts and automatic responses to the world around you. It also controls other body systems and processes, such as digestion and breathing.
How does anaerobic respiration occur in yeast ?
Brian is testing to see how much water plants need. Why is it important that Brian includes a control group? A) To observe whether plants need water or not B)To confirm that plants need 25ml of water per day C)To confirm that plants need 75ml of water per day D) To observe one variable at a time
Answer: B or C
Explanation: The question does not include the variable or steps Brian is using so either one could be correct. It has to be the one that he is controlling though. This is because a control group is used to rule out any alternate explanations. Therefore the answer should be the one that he is trying to test out.
How many unpaired electrons are present in a lithium atom?.
Electronic configuration is given by
[tex]\\ \tt\bull\rightarrowtail 1s^22s^1[/tex]
1s orbital is filled2s orbital is unfilledSo
unpaired electrons=1Hydrogen forms _____ bonds with strongly _______ element
Answer:
Hydrogen bond is formed only by the three highly electronegative elements- fluorine, oxygen and nitrogen.
Sound waves are what type of waves?
longitudinal wave.... is the right answer
# Good morningHow many protons and electrons does oxygen have? What about hydrogen? Draw a model of each atom if that helps you think about the differences between them ?
Answer:
Two electrons fit in the first shell out from the nucleus and eight fit in the second. Every element with more protons than the two of Helium needs to work on shells outside the first one. one you get to ten, you have filled the first two shells.
In a water molecule, oxygen forms one covalent bond with EACH of TWO hydrogen atoms. As a result, the oxygen atom has a stable arrangement of 8 valence electrons. Each hydrogen atom forms only one bond because it needs only two electrons to be stable.
Which process causes minerals to become concentrated in certain areas.
Answer: Volcanic activity.
Explanation:
Which statement describes heterogeneous mixtures?
They are made up of two or more pure substances that are not chemically bonded together and appear non-uniform.
The substances they are composed of can only be separated chemically.
The substances they are composed of have fixed ratios between their components.
They are made up of two or more pure substances that are chemically bonded together and appear uniform.
Answer:
A.
Explanation:
got it correct on edge.
Suppose that two hydroxides, MOH and
M′(OH)2, both have a Ksp of 2.15 × 10−12
and that initially both cations are present in
a solution at concentrations of 0.001 mol/L.
At what pH will the hydroxide precipitate
when solid NaOH is added to the solution?
This problem is providing us with the solubility product of two hydroxides, which can be used to calculate the pH at which they will precipitate. At the end, the answer turns out to be 9.67.
Solubility product:In chemistry, we use solubility products in order to quantify the amount of precipitate a solid will be leftover after dissolving it. Thus, we can just write the equilibrium expressions and solve for x, molar solubility, for each hydroxide as follows:
[tex]Ksp=[M^+][OH ^-]\\\\2.15x10^{-12}=(0.001+x)(x)\\\\x=2.15x10 ^{-9}M\\\\Ksp=[M^2^+][OH ^-]^2\\\\2.15x10^{-12}=(0.001+x)(x)^2\\\\x=4.535x10 ^{-5}M\\\\[/tex]
Then, since both x's contribute to the concentration of hydroxide ions, but just the second one is predominant, we add them together to get the total:
[tex][OH^-]=4.535x10^{-5}M+2.15x10^{-9}M=4.535x10^{-5}M[/tex]
Finally, we calculate the pOH and pH with:
[tex]pOH=-log(4.535x10^{-5})=4.343\\\\pH=14-pOH=9.67[/tex]
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Which element is classified as a metal?
A. boron (B)
B. antimony (Sb)
C. phosphorus (P)
D. cadmium (Cd)
Cadmium (Cd) element is classified as a metal.
What are metals?Metals are characterized as elements with high electrical conductivity, transparency, brilliance, and malleability, as well as the ability to rapidly shed electrons and create positive ions (cations).
Metals are to the left of the line (excluding hydrogen, which is a nonmetal), nonmetals are to the right of the line, and elements immediately adjacent to the line that exhibit properties of both metals and nonmetals and are called as metalloids.
So, boron, antimony and bismuth are classified as metalloids, where the element cadmium is a metal.
Hence, the correct option is D
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Since sodium chloride is classified as a compound, a sample of it contains:.
when dynamite explodes, it releases a large amount of light and heat. this is an example of _____.
Answer:
Exothermic reaction
Explanation:
