Do you
think a colony on Mars should be nearer the northern or southern
polar cap? Explain.
Answers
Answer:Hola TvT
Explanation:When the Martian polar caps were first viewed through telescopes, most scientists believed that they were made of water ice, like the polar caps on Earth. Like Earth, Mars has a North and South Pole. But while Earth's polar ice caps consist solely of water ice, Mars' polar caps are a combination of water ice and carbon dioxide ice. As the Martian seasons change, the carbon dioxide ice sublimates (vaporizes) in summer, revealing the surface, and freezes again in winter. As fall approaches, in each respective hemisphere, clouds begin to form over the polar region and the ice cap begins to grow. In spring, the polar caps recede...........Aside from ice, Mars' polar regions have some interesting geologic features. The north polar dune field is a vast concentration of sand dunes that stretches around the entire north polar cap. In some areas, the sand measures up to 500 km (300 miles) across. When the dunes begin to thaw in spring, dark spots form on their surfaces. The north polar dunes were first seen during the 1972 mapping of Mars by Mariner 9, and they are identical to dunes in Earth's desert regions..
bye bye UnU
Related Questions
what is meant by amoeba and what is the name of its parts
Answers
Answer:
amoeba is the unicellular organism which can be seen by only microscope but not with our nacked eyes
Answer:
An amoeba often called an amoeboid, is a type of cell or unicellular organism which has the ability to alter its shape, primarily by extending and retracting pseudopods Amoebae do not form a single taxonomic group; instead, they are found in every major lineage of eukaryotic organisms. Amoeboid cells occur not only among the protozoa, but also in fungi, algae, and animals.
name of parts of ameoba
3 parts – the cytoplasm, plasma membrane and the nucleus. The cytoplasm can be differentiated into 2 layers – the outer ectoplasm and the inner endoplasm. The plasma membrane is a very thin, double-layered membrane composed of protein and lipid molecule
i hope this will help you
20
What is the name of this compound?
OH
CH3-CH3 -CH 2 -CH2-CH-CH2
Isohexyl alcohol
hexyl alcohol
tert-hexyl alcohol
sec-hexyl alcohol
Answers
tret-hexyl alcohol
Explanation:
its formula is CH3-CH3-CH2-CH2-CH-CH2
Explain how to arrange the following in increasing order of atomic size/radius: Al, C, Si
Answers
Answer:
C, Si, Al
Explanation:
We use periodic trends to help us find the atomic radii. The trend for atomic radii on the Periodic Table of Elements is down and to the left. So whichever elements are furthest to the left and farthest down have the largest atomic radii.
A glass cup of orange juice is found to have pOH of 11.40. Calculate the concentration of the hydrogen ions in the juice.
Answers
Answer: The concentration of hydrogen ion is 2.5 x 10∧-3.
Explanation:
It is well known that; pH + pOH = 14
∴ pH + 11.40 = 14
pH = 14 -11.40 = 2.60
Remember that,
pH = - Log [ H+ ]
2.60 = - log [H+]
To get the hydrogen ion concentration, we take the anti-log of 2.60.
[H+] = Antilog 2.60 = 2.5 x 10∧-3.
The element has protons and neutrons
Answers
Answer:
All elements have protons and neutrons.
Explanation:
Sure, some standard norms of elements don't have neutrons present (like hydrogen), but different forms of hydrogen have neutrons. Neutrons can and are present in every element in the Periodic Table of Elements.
Why does a perfume bottle burst when placed inside the flame?
Answers
Answer:
Explanation:
It is because they contain ethyl alcohol and they are inflammable. The perfume contains alcoholic substances like the ethyl alcohol or the ethanol. After reaching the flash point,the combustion of ethanol takes place inside the bottle and the internal combustion created pressure causes explosion.
Hope this helps
plz mark as brainliest!!!!!!!
Answer:
because they contain ethyl alcohol and they are inflammable.
Electrical potential is the amount of energy that is available to do what?
A.
attract atoms to each other
B.
move atoms from one half cell to another half cell
C.
move electrons from anode to cathode
D.
move electrons from cathode to anode
Answers
C.
move electrons from anode to cathode
Step-by-step Explanation
Electrical potential is the amount of energy that is available to move electrons from anode to cathode
Answer:
move electrons from anode to cathode
Explanation:
Plato
When sugar is added to a sugar solution, the sugar does not dissolve. Which
term describes the original sugar solution?
O A. Semisaturated
O B. Supersaturated
C. Saturated
D. Unsaturated
Answers
Answer:Supersaturated
Explanation:The answer is supersaturated because supersaturation is a solution that contains more than the maximum amount of solute that is capable of being dissolved at a given temperature. It is supersaturated because there is already a sugar solution and adding another sugar is more than the maximum amount of solute.
What is the relationship between the period and the orbital radius? Select one: a. It is a direct relationship- As the period increases the orbital radius also increases. b. It is an inverse relationship- As the period increases the orbital radius decreases.
Answers
I'm pretty sure it's A, but then again I'm only in 8th grade. Sorry if this doesn't help:(
A sample of gas is found to occupy a volume of 900cm^3 at 27 degree Celsius, calculate the temperature at which it will occupy a volume of 300cm^3, provided the pressure is kept constant.
Answers
Answer:
Explanation:
Here, V1=900cm3, V2=300cm3
T1=(27+273)K=300K, T2=?
Applying Charles's law,
V1T1=V2T2
∴T2=V2T1V1=300cm3×300K900cm3=100K
=100−273=−173∘C
Hope this helps
plz mark as brainliest!!!!!!
Which refers to the force that one massive object exerts to attract another object? velocity gravity acceleration newton
Answers
Answer:
gravity is the correct answer to the given question .
Explanation:
The gravity is the gravitational force due to the gravitational the solar system as well as the other body of dimensional object to its center point. The gravitational force maintains all the planetary systems in the orbit over the sun.We can called gravitational force as the universal force .
The gravitational force attracts the huge object for grabbing the another object.All the other option are not attracting the another object that's why these are incorrect option .Answer:
the answer is b gravity :)
Explanation:
u got this :)
What atom should be balanced last when balancing hydrocarbon combustion
reactions?
A. The oxygen atoms
B. The carbon atoms
C. Any of the three
D. The hydrogen atoms
Answers
Answer:
A. The oxygen atoms
Explanation:
A hydrocarbon combustion reaction consist of carbon, hydrogen and oxygen. In balancing the hydrocarbon combustion reaction at first carbon and hydrogen atoms are balanced and at last oxygen atoms are balanced.
Oxygen atoms are balanced at the end because oxygen atom stand alone as O2 and easier to balance than hydrogen and carbon.
Hence, the correct option is "A".
Which consists of only one type of atom?
Answers
Answer:
A chemical element
Explanation:
A chemical element consists of only one type of atom.
Describe what a mole is,
and what is meant by
a molar solution.
Answers
Answer:
A mole is an amount of a substance that contains 6.022✖️10^22 atoms of that substance
Or
Gram atomic masses,gram formula masses or gram formula masses are called one mole.
Molar solution or molarity is defined as the number of miles of so lutes dissolved per dm^3 of solution
Explanation:
I hope this will help you :)
what is the mass of 1.5 mol of aluminum?
Answers
Answer:
40.47 g Al
Explanation:
In 1 mol of Al, there are 26.98 grams of Al, so Al is 26.98 g/mol.
Simply multiply 1.5 by 26.98 to get your answer.
Molecular formula of ammonia
Answers
Answer:
NH3 is the molecular formula of ammonia
Explanation:
i hope this will help you :)
A chemist dissolves 0.9 g of an unknown monoprotic (one acidic H) acid in water. She finds that 14.6 mL of 0.426 M NaOH are required to neutralize the acid.
Answers
Answer:
144.7 g/mol would be the molar mass of the monoprotic acid
Explanation:
We can find the molar mass of the monoprotic acid from the data showed in the excersie. As every titration we can say that:
mEq acid = mEq base
mEq acid = 14.6 mL . 0.426 M
mEq acid = 6.2196 mEq
mEq = Volume (mL) . N = mass (g) / (EQ / 1000), where the EQ is the:
Molar weight / valence. For this case, as the acid is a monoprotic one, we assume Molar Weight = EQ
6.2196 mEq = 0.9 g / (EQ / 1000)
6.2196 mEq . EQ/1000 = 0.9 g
EQ = 0.9 g / 6.2196×10⁻³ = 144.7 g/mol
Consider an electrochemical cell based on the spontaneous reaction 2AgCl(s) + Zn(s) → 2Ag(s) + 2Cl– + Zn2+. If the zinc ion concentration is kept constant at 1 M, and the chlorine ion concentration is decreased from 1 M to 0.001 M, the cell voltage should:
Answers
Answer:
there is an increase by 0.18 V in the cell voltage.
Explanation:
The given equation of the reaction can be well written as
[tex]2AgCl_{(s)} + Zn _{(s)} \to 2Ag_{(s)} + 2 Cl^- _{(aq)}+ Zn^{2+}_{(aq)}[/tex]
By application of Nernst Equation ; we have the expression
[tex]E_{cell} = E^0- \dfrac{0,059}{n}log (\dfrac{[product]}{[reactant]})[/tex]
here in the above equation;
n = number of electrons transferred in the equation of the reaction
n = 2
Also;
[tex]E^0 = E_{cathode} - E_{anode}[/tex]
[tex]E^0 = E_{Ag^+/Ag} - E_{Zn^+/Zn}[/tex]
[tex]E^0 = +(0.80 \ V) - (-0..76 \ V)[/tex]
[tex]E^0 = (0.80 \ V +0..76 \ V)[/tex]
[tex]E^0 = 1.56 \ V[/tex]
If the zinc ion concentration is kept constant at 1 M; we have:
[tex]E_{cell} = E^0- \dfrac{0.059}{n}log (\dfrac{[product]}{[reactant]})[/tex]
[tex]E_{cell} = 1.56 - \dfrac{0.059}{2}log ({[Zn^{2+} ]}{[Cl^{2-}]})[/tex]
[tex]E_{cell} = 1.56 - \dfrac{0.059}{2}log (1)[/tex]
Since log(1) = 0
Therefore;
[tex]E_{cell} = 1.56\ V[/tex]
When the chlorine ion concentration is decreased from 1 M to 0.001 M; we have;
[tex]E_{cell} = E^0- \dfrac{0.059}{n}log (\dfrac{[product]}{[reactant]})[/tex]
[tex]E_{cell} = 1.56 - \dfrac{0.059}{2}log ({[Zn^{2+} ]}{[Cl^{2-}]})[/tex]
[tex]E_{cell} = 1.56 - \dfrac{0.059}{2}log ({[1*0.001^2}]})[/tex]
[tex]E_{cell} = 1.56 - 0.0295 \ * \ log ({[1*10^{-6}}]})[/tex]
[tex]E_{cell} = + 1.737 \ V[/tex]
The change in voltage = [tex]E_{cell} - E^0[/tex]
=( 1.737 - 1.56 )V
= 0.177 V
≅ 0.18 V
Thus; from the following observation; there is an increase by 0.18 V in the cell voltage.
The voltage of the cell increased by 0.18 V.
The equation of the reaction is; 2AgCl(s) + Zn(s) → 2Ag(s) + 2Cl– + Zn2+
We know that;
E°cell = 1.36 - (-0.76) = 2.12 V
If the cells are both at 1M concentration the Ecell = E°cell = 2.12 V
When the concentration of Cl- decreased from 1 M to 0.001 M
Ecell = E°cell - 0.0592/n log Q
Substituting values;
Ecell = 2.12 V - 0.0592/2 log (1 × (0.001)^2)
Ecell = 2.298 V
Increase in voltage = 2.298 V - 2.12 V = 0.18 V
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What is the final temperature of a 27.2-gram wooden block that starts at 23.4 degrees celsius and loses 759 joules of energy? The specific heat capacity of wood is 1.716 joules/gram degree Celsius.
Answers
Answer:
The correct answer is 7.1 degree C.
Explanation:
Based on the given information, the initial temperature or To of the block is 23.4 degree C.
The energy lost or Q from the given wooden block is -759 J.
The specific heat capacity or c of the wood given is 1.716 J/g°C
The mass of the wooden block given is 27.2 grams.
There is a need to find the final temperature of the wooden block, for this the formula to be used is,
Q = m × c × (T-To)
Now by putting the given values in the formula we get,
-759 = 27.2 × 1.716 (T - 23.4)
T = 7.1 degree C.
___resources will run out one day.___the use of non-renewable
resources now will make supplies last longer. Fossil___
are non-renewable resources.
Burning fossil fuels releases___
which contributes to___
change.
Burning___
fossil fuel will help to reduce this effect. Accidents with oil rigs or___
can pollute the sea with oil and kill___
Nuclear fuel is non-renewable.It is used in___power stations.
These are very ___ to build and to ___ Accidents in nuclear power stations can release___ materials into the atmosphere
Nuclear fuel is non-renewable. It is used in
power stations. These are very
to build and to
Accidents in nuclear power stations can
release
materials into the atmosphere.
Answers
Answer:
Non Renewable__resources will run out one day._Slowing/stopping__the use of non-renewable
resources now will make supplies last longer. Fossil_Fuels__
are non-renewable resources.
Burning fossil fuels releases_Carbon Dioxide__
which contributes to_Pollution__
change.
Burning_less__
fossil fuel will help to reduce this effect. Accidents with oil rigs or_mines/power plants__
can pollute the sea with oil and kill_wildlife__
Nuclear fuel is non-renewable.It is used in_Nuclear__power stations.
These are very _Expensive__ to build and to _can cause__ Accidents in nuclear power stations can release__dangerous_ materials into the atmosphere
Nuclear fuel is non-renewable. It is used in
power stations. These are very
to build and to
Accidents in nuclear power stations can
release
materials into the atmosphere.
Explanation:
Definitions:
Fossil fuel- A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing organic molecules originating in ancient photosynthesis that release energy in combustion
Fossil fuels produce large quantities of carbon dioxide when burned. Carbon emissions trap heat in the atmosphere and lead to climate change. In the United States, the burning of fossil fuels, particularly for the power and transportation sectors, accounts for about three-quarters of our carbon emissions.
Carbon dioxide from the burning of fossil fuels accumulates in the atmosphere, where it causes global warming. But it also affects our oceans. As carbon dioxide enters the ocean, it reacts with sea water to form carbonic acid. ... That's the equivalent in weight of 500 billion Volkswagen Beetles dumped at sea.
A nuclear power plant is a thermal power station in which the heat source is a nuclear reactor. As is typical of thermal power stations, heat is used to generate steam that drives a steam turbine connected to a generator that produces electricity.
In an oxidation-reduction reaction, what happens to the electrons in the reduction process?
A.
Electrons are bonded.
B.
Electrons are gained.
С.
Electrons are lost.
D
Electrons are replaced.
Answers
Answer:
The answer is option B.
Electrons are gained
Hope this helps you
Gold’s natural state has a definite shape and a definite volume. What is gold’s natural state(s)?
Answers
Answer:
Solid
Explanation:
1) In 1.31 g of a chloride of titanium, there is 0.528 g of titanium. What is the empirical formula of this titanium chloride?
Answers
Answer:
TiCl2
Explanation:
Mass of the chloride of titanium= 1.31 g
Mass of titanium= 0.528 g
Therefore mass of chlorine = 1.31-0.528 = 0.782 g
To determine the empirical formulae of the titanium chloride, divide the mass of each element by its relative atomic mass and divide through by the lowest ratio.
Ti- 0.528/48 = 0.011, Cl- 0.782/35.5 = 0.022
Ti- 0.011/0.011 , Cl- 0.022/0.011
Ti- 1, Cl-2
Hence the required empirical formula is TiCl2
The initial temperature of a bomb calorimeter is 28.50°C. When a chemist carries out a reaction in this calorimeter, its temperature decreases to 27.45°C. If the calorimeter has a mass of 1.400 kg and a specific heat of 3.52 J/(gi°C), how much heat is absorbed by the reaction?
Answers
Answer:
D. 5,170 J
Explanation:
Describe the structure and bonding in graphite.
Answers
Answer:
In graphite, each carbon atom is covalently bonded to 3 other carbon atoms. ... These extra electrons are delocalised, or free to move, in the area between layers of carbon atoms. As these electrons are free to move they are able to carry charge and thus graphite can conduct electricity.
Explanation:
Graphite has a layered structure, with each layer consisting of a two-dimensional hexagonal lattice of carbon atoms. Within each layer, carbon atoms are covalently bonded in a flat, trigonal planar arrangement, forming strong σ bonds.
What is graphite?In graphite, carbon atoms are arranged in a flat, hexagonal lattice within each layer, forming strong covalent σ bonds. These layers are stacked on top of each other, held together by weaker van der Waals forces, which allow for easy slippage.
The presence of π bonds between the carbon atoms in each layer results in delocalized π electrons above and below the plane, creating a "sea" of mobile electrons. This delocalization gives graphite its remarkable properties, including electrical conductivity and lubrication.
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A mixture is best described as:
A. None of these
B. A pure chemical substance consisting of one type of atom.
OC. The basic building blocks of matter.
D. Two or more elements or compounds that are mixed together but not chemically bonded.
Answers
Answer:
D. Two or more elements or compounds that are mixed together but not chemically bonded.
Explanation:
Mixture is unique as it is not chemically bonded and individual entities such as elements or compounds keep their unique identities.
Answer:
Mixture consists of two or three elements or compounds that are mixed together but not chemically bonded.
What mass of nickel (Ni) is in a 2.4 Kg sample of propanol if the concentration is 20 ppb ? (atomic mass of Ni = 58.69)
Answers
Answer:
The mass of nickel is 48μg
Explanation:
Parts per billion is a way to describe small concentrations and is defined as the ratio between μg of solute and kg of solvent.
If a solution of nickel in propanol is 20ppb, contains 20μg of nickel in 1 kg of propanol.
Thus, a sample of 2.4kg of propanol will contain:
2.4kg × (20μg nickel / 1kg) = 48μg nickel
The mass of nickel is 48μgSet up the ion formation equations, with ionization energy values for each electron in the valence layer, of the atoms of the chemical elements below: a) Na z=11 b) Ca z= 20 c) Sr z 38 d) Li z= 3 e) Cs z= 55 f) Be z= 43
Answers
Answer:
according to quantum physics newtons 3rd law is in the state of nuclear power things so the answer is c
Explanation:
according to quantum physics newtons 3rd law is in the state of nuclear power things so the answer is c
Jack tries to place magnets on his refrigerator at home, but they won’t stick. What could be the reason?
Answers
Answer:
The reason might be that the material that the fridge is made out of is not magnetic, meaning that it's not attracted to metal.
What conclusion did Rutherford draw from his gold-foil experiment? A. Almost all the mass of an atom is concentrated in the nucleus. B. Atoms contain three different subatomic particles. C. Electrons are tiny particles that carry a negative charge. D. The mass of a proton is nearly equal to the mass of a neutron.
Answers
Answer:
A. Almost all of the mass is concentrated in the nucleus.
Explanation:
Because when he shot the alpha particles towards the atoms, most passed through (which meant atom is mostly empty space), but some bounced back and such (which meant mass is concentrated in the nucleus.)
The reason they bounced is because alpha particles are postive and nucleus is positive as well, and we know positives don't attract, rather they repel thus they bounced.