Answer:
64.9 L
Explanation:
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is the energy contained with a sugar molecule potential or kinetic energy?
Potential energy, because it is stored in the basic building block of all living organisms called cells and is only released when necessary for energy consuming work.
NEED HELP ASAP! I will post the observation now in different question
Answer:
A. NO2 gas released, [tex]NO_{3}^{-}[/tex] ion is present.
The residue is (ZnO) Zn oxide, [tex]Zn^{2+}[/tex] ion is present.
The white salt is Zn(NO3)2.
B. CO2 gas released, [tex]CO_{3}^{2-}[/tex] ion present.
The residue ia (CuO ) Cu(||) oxide, [tex]Cu^{2+}[/tex] ion present .
The green salt is CuCO3.
C. CO2 gas released, [tex]CO_{3}^{2-}[/tex] ion present.
The residue Pb(||) oxide, [tex]Pb^{2+}[/tex] ion is present.
The white salt is PbCO3.
D. CO2 gas released, [tex]CO_{3}^{2-}[/tex] ion present.
The residue is (ZnO) Zn oxide, [tex]Zn^{2+}[/tex] ion is present.
The white salt is ZnCO3.
Define motion of particles in matter
Answer:
Explanation:
The states that all of the particles that make up matter are constantly in motion. As a result, all particles in matter have kinetic energy. The kinetic theory of matter helps explain the different states of matter—solid, liquid, and gas. ... Particles do not always move at the same speed.
helppp.....Which one of the following statements does not describe gold?
A. It exist as free element in nature
B. It is an excellent conductor
C. It has a yellow color
D. It reacts with oxygen in the presence of moist air
Answer: D. It reacts with oxygen in the presence of moist air.
Explanation:
The element Gold, does not react with oxygen,hence it is not affected by corrosion,neither does it rust.
Classify the changes involved in the following processes as physical or chemical changes: (a) Photosynthesis (b) Dissolving sugar in water (c) Burning of coal (d) Melting of wax (e) Beating aluminium to make aluminium foil (f) Digestion of food
Explanation:
a. chemical change
b. Physical change.
c. chemical change.
d. chemical change
e. Physical change.
f. chemical change.
Which best describes nuclear fission? A nucleus spontaneously splits and absorbs energy. Two nuclei spontaneously combine and absorb energy. A nucleus collides with a neutron and splits, releasing energy. Nuclei combine to form a heavier nucleus, releasing energy.
Answer:
A nucleus collides with a neutron and splits, releasing energy.
Explanation:
The answer option which best describes nuclear fission is: C. A nucleus collides with a neutron and splits, releasing energy.
A nuclear reaction can be defined as a type of reaction in which the nucleus of an atom is transformed by either being joined (fusion) or split (fission) with the nucleus of another atom of a radioactive element and accompanied by a release of energy.
Generally, there are two (2) main types of nuclear reaction and these are:
Nuclear fusion: it involves the joining of two smaller nuclei of atoms to form a single massive or heavier nucleus with the release of energy.Nuclear fission: it involves the collision of a heavy atomic nucleus with a neutron, thereby causing a split and release of energy.In conclusion, a nuclear fission causes a split of a heavy atomic nucleus into two or more nuclei (fragments) having approximately equal mass.
Read more: https://brainly.com/question/24040465
5. When would it be useful to know whether a chemical is an acid or base? Give an example.'
Answer:
To determine whether a substance is an acid or a base, count the hydrogens on each substance before and after the reaction. If the number of hydrogens has decreased that substance is the acid (donates hydrogen ions). If the number of hydrogens has increased that substance is the base (accepts hydrogen ions).
What symbol is used in a chemical equation to indicate “produces” or “yields”?
Answer:
This should help you with your problem
The symbol that is used to indicate “produces” or “yields” is "→"
Forward arrow is used to indicate the reaction moving towards products.
Chemical reaction:In a chemical reaction this forward arrow "→" is used to differentiate between reactants and products.Reactants are written on L.H.S and Products are written on R.H.S.For example:H₂SO₄ (aq) + 2NaOH(aq) → Na₂SO₄(s) + 2H₂O (l)
This reaction yields or produces sodium sulphate and water when sulphuric acid and sodium hydroxide reacts.
Find more information about Chemical reaction here:
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the first man made fibre is _____
Answer:
Rayon
Explanation:
Rayon developed for the first time in the late 19th century as a replacement for silk. Silk was expensive in those days as was an organic product made out of cocoons. Rayon was the first man-made fibre came to be known as an artificial textile material formed from cellulose obtained from plants. Rayon was a less expensive option for silk clothing and accessories.
barium chloride (Ba(CIO3)2) breaks down to form barium chloride and oxygen. what is the balanced equation for this equation?
Answer:
Ba(ClO₃)₂ → BaCl₂ + 3 O₂
Explanation:
When exposed to heat, barium chlorate (Ba(ClO₃)₂ breaks down into an inorganic compound (Barium chloride - BaCl₂) and a molecule (Oxygen - O₂).
the temperature of a sample of water increases from 20celsius to 46.6celsius as it absorbs 5650 J of heat. what is the mass of the sample?
Answer:
m = 50.74 kg
Explanation:
We have,
Initial temperature of water is 20 degrees Celsius
Final temperature of water is 46.6 degrees Celsius
Heat absorbed is 5650 J
It is required to find the mass of the sample. The heat absorbed is given by the formula ad follows :
[tex]Q=mc\Delta T[/tex]
c is specific heat of water, c = 4.186 J/g°C
So,
[tex]m=\dfrac{Q}{c\Delta T}\\\\m=\dfrac{5650}{4.186\times (46.6-20)}\\\\m=50.74\ kg[/tex]
So, the mass of the sample is 50.74 kg.
Complete the following radioactive decay problem. Please help
Answer:
230 90Th
Explanation:
A careful observation of the equation given in question shows that 234 92U is undergoing alpha decay. This means that the resulting daughter nuclei will have a decrease of 4 in the mass number and a decrease of 2 in the atomic number.
Please see attached photo for further details.
Mention 6 products from coal tar as a result of destructive distillation of coal
Answer:
Coke, coal gas, gas carbon, ammonia liquor, and coal oil
Put the steps of the carbon cycle in order using Step 1 as your starting point. Step 1: Bacteria, through nitrogen fixation and nitrification, convert nitrogen into a usable form.
Answer:
The answer is explained below
Explanation:
Put the steps of the carbon cycle in order using Step 1 as your starting point
Step 1: Bacteria, through nitrogen fixation and nitrification, convert nitrogen into a usable form. The animal dies and decomposes, returning nitrogen back to the soil. Once nitrogen is in usable form, it is taken up by plants and assimilated into proteins.. An animal eats a plant and the nitrogen becomes part of the animal’s proteins.
The steps taking in the carbon circle using step 1 as the starting point is as follows:
Step 1: Bacteria, through nitrogen fixation and nitrification, convert nitrogen into a usable form.
Bacteria convert nitrogen into nitrites and nitrates through the process of nitrification. Nitrites and nitrates are in the form that can be used by the plants
Step 2: Once nitrogen is in usable form, it is taken up by plants and assimilated into proteins.
The Nitrogen can only be used by the plants when in nitrites and nitrates form. When in this form, it is then assimilated into plant tissue as protein.
Step 3: An animal eats a plant and the nitrogen becomes part of the animal’s proteins.
An animal such as rabbit eats the plant and the protein in the plant becomes protein in the animal.
Step 4: The animal dies and decomposes, returning nitrogen back to the soil.
When the animal dies, the animal undergoes decomposition and the nitrogen in the animal is returned to the soil
The percentages of carbon dioxide and oxygen have changed from Earth's early
atmosphere to Earth's atmosphere today,
Explain the processes that led to these changes.
Answer:
Explanation:
The early atmosphere
Scientists believe that the Earth was formed about 4.5 billion years ago. Its early atmosphere was probably formed from the gases given out by volcanoes. It is believed that there was intense volcanic activity for the first billion years of the Earth's existence.
The early atmosphere was probably mostly carbon dioxide, with little or no oxygen. There were smaller proportions of water vapour, ammonia and methane. As the Earth cooled down, most of the water vapour condensed and formed the oceans.
It is thought that the atmospheres of Mars and Venus today, which contain mostly carbon dioxide, are similar to the early atmosphere of the Earth.
Scientists can’t be sure about the early atmosphere and can only draw evidence from other sources. For example, volcanoes release high quantities of carbon dioxide. Iron-based compounds are present in very old rocks that could only have formed if there was little or no oxygen at the time.
Changes in the atmosphere
So how did the proportion of carbon dioxide in the atmosphere go down, and the proportion of oxygen go up?
The proportion of oxygen went up because of photosynthesis by plants.
The proportion of carbon dioxide went down because:
it was locked up in sedimentary rocks (such as limestone) and in fossil fuels
it was absorbed by plants for photosynthesis
it dissolved in the oceans
The burning of fossil fuels is adding carbon dioxide to the atmosphere faster than it can be removed. This means that the level of carbon dioxide in the atmosphere is increasing.
hi can you please help me to solve above choosing questions
Answer:
radioactive noble gas is radon
which of the following is polymer
Cellulose is a linear polysaccharide polymer
nitrogen fixing bacteria is found in the root nodules of legumes
Explanation:
i hope this will help you
Answer:
1 radon nd krypton
2 polyvinyi cloride
3 legumes
4 alkynes
Temperature __________ as the average kinetic energy of a gas increases. stays the same decreases increases
Answer:
increases
Explanation:
Temperature is essentially the measure of average kinetic energy, so the higher the average kinetic energy, the higher the temperature.
im giving out the game the last of us part 2 who wants it
Answer:
YEESSS
Explanation:
Because that seems like the only logical answer.
Answer:
YES
Explanation:
YES
Which compound contains covalent bonds? AlN Ca3N2 NaCl HCl
Answer:
Ca3N2
Explanation:
an element p has atomic number 13 while q has the atomic 16..write down electric configuration of p and q
Answer:
P = 2,8,3
q = 2,8,6
Explanation:
Because the first shell contain 2 electron and the 2nd contain 8 electron and the last shell contain the electron which is left
Explanation:
p=1s^2,2s^2,2p^6,3s^2,3p^1
q=1s^2,2s^2,2p^6,3s^2,3p^4
the quantum numbers are used in my answer.
there are 4 quantum numbers.
1.principal quantum numbers
2.angular momentum quantum numbers
3.magnetic quantum numbers
4.spin quantum numbers
In this case,the angular momentum quantum numbers is being used.it describes the unique quantum state of an electron and is designated by the letter L.this behaviour manifests itself as the shape of the orbital.electron shells have distinct shapes denoted by letters,s,p,d,f.
l can be numbers like,0,1,2,3
the maximum electrons in each letter is,
s=2
p=6
d=10
f=14
the shapes of the sub_shells
s sub_shell is spherical
p sub_shell is two dumb_bells
d sub_shell is four dumb_bells
f sub_shell is eight dumb_bells
When was the declaration of independence signed?
Copper conducts heat well.
physical
chemical
Answer:
Physical property
Explanation:
We can visualize the property without the need to do any experiments.
O ar se apresenta no estado gasoso, é uma mistura de gases. A poluição do ar é a introdução de qualquer substância que, devido a sua concentração, possa a se tornar nociva à saúde e ao meio ambiente. À contaminação do ar por gases, líquidos e partículas sólidas em suspensão, material biológico e até mesmo energia é denominada A) destruição da natureza. B) emissão de gases. C) poluição atmosférica. D) pressão atmosférica.
Answer:
poluição atmosférica
Explanation:
O que eles estão tentando falar na pergunta é que a que termo nos referimos como a introdução de partículas estranhas na forma de suspensão etc. na atmosfera.
Este termo é conhecido como poluição do ar. É chamado assim porque, adulteramos a constituição original do ar, introduzindo esses novos componentes.
Esses componentes introduzidos muitas vezes têm um efeito adverso na composição da qualidade do ar.
A very good example of soft water is A. Distilled water B. Sea water C. Underground water D. Polluted water
Answer:
The answer is option A.
Distilled water
Since all the chemicals that will cause hardness in the water has been removed.
Hope this helps.
Mendeleev's periodic table of elements was created in 1901.
O A. True
O B. False
Explanation:APΕX
From this figure, why are there only two possible values for the spin quantum number?
Answer:
bcoz there is only two magnetic file orienation is possible
Explanation:
What causes the sea floor to move apart at a sea floor spreading center A density B continental drift C paleomagnetism D convection currents
Answer: D convection currents
Explanation:
The seafloor spreading is a phenomena that occurs due to liberation of heat from the convection currents generated in the mantle. It makes the earth crust more plastic and less dense. This happens at divergent plate boundaries. As the plates move apart, the less denser material rises. It leads to the formation of mountain and crust cracks.
name the process you would use to separate a mixture of petrol and diesel and explain how the separation takes places.
Answer:
Fractional distillation
Explanation:
Petrol and diesel can be separated by using a process referred to as distillation.
While separating petrol and diesel using distillation, the mixture is kept in a fractionating column.
The one with the lowest boiling point evaporates first and goes to the higher level followed by condensation at lower temperature, while the one with higher boiling point has high condensation point, but condenses at a lower level.
And that is how to separate them, in a process more specifically referred to as " fractional distillation "
Hope that helps!
Formula los siguientes compuesto: Dietil eter, Etanol, Propanotriol, Acido Propanodioico, Pentanal, Pentano-2,4-diona, Metanoato de metilo, Ciclohexano-1,3-diol, Acido heptanoico, Ciclobutil metil éter, acetato de etilo, 2-metilbenzaldehído, Ciclohexanona, Butanona
Answer:
Explanation:
En este caso para formular los compuestos, debes identificar el grupo funcional principal de la molecula. Una vez que eso está hecho, puedes intentar formularlo.
Empezaremos primero identificando el grupo funcional principal de la molécula, para luego formularlo correctamente.
Dietil eter: la terminación eter al final significa que pertenece al grupo de los éteres, el cual tiene como formula general R - O - R.
Etanol: debido a que termina en ol, este grupo pertenece a los alcoholes. Para formularlo solo se dibuja la molecula del etano, junto a un enlace con el grupo OH, como su formula general R - OH.
Propanotriol: igualmente termina en ol, por lo tanto es un alcohol, sin embargo, en este caso, tambien tiene la terminación prefija tri, asi que significa que hay 3 grupos OH en la molecula.
Acido propanodioico: esta es sencilla, porque empieza como acido, y solo hay un grupo funcional que empieza así y son los acidos carboxilicos, es decir, el grupo COOH (R - COOH) que es el carboxilo. Tiene el prefijo di, antes del oico, por lo que son dos carboxilos presentes en la molecula.
Pentanal: el sufijo al, significa que pertenece al grupo de los aldehidos, en este caso, posee el grupo carbonilo H - C = O.
Pentano - 2,4 - diona: la terminación ona significa que pertenece al grupo de las cetonas, (R - CO - R), parecido a los aldehidos, con la diferencia de que tiene grupos alquilos en lugar de un hidrogeno.
Metanoato de metilo: la terminación ato de ilo, pertenece a los esteres, (R - COOR) derivado de los acidos carboxilicos.
De aqui en adelante solo mencionaré los grupos funcionales pues ya se explicó el por que, por sus terminaciones:
Ciclohexano - 1.3 - diol: este pertenece a los alcoholes.
Acido heptanoico: acido carboxilico
Ciclobutil metil eter: eteres
Acetato de etilo: ester
2-metilbenzaldehído: aldehído unido a un grupo aromatico como el benceno.
Ciclohexanona: un ciclo (cadena cerrada) unido a un grupo carbonilo.
Butanona: cetona.
Observa la foto adjunta para que veas la formulación de cada una:
BeWhat direction do you predict the addition of a base to the solution containing bromophenol blue will drive the equilibrium? Explain your prediction in terms of le chatelier principle
Answer:
Explanation:
Le Chatlier's principle expresses that when a system in equilibrium is irritated by outside changes, the system reacts by altering the equilibrium concentrations of its segments to such an extent that the annoyance is invalidated and accomplishes an equilibrium state at this bothered condition, with equilibrium concentrations not quite the same as in the past.
Bromothymol blue is a phenolic suflone that demonstrations a weak acid in aqueous media. Being a weak acid, it doesn't ionize totally and builds up a harmony with its related and separated structure.
From Le Chatlier's guideline, it very well may be found out that when a strong acid is included, the last's finished separation, without foundation of equilibrium causes a spike in the proton concentration in the medium. This expansion in proton concentration is the outer bother and the framework will react by shifting to one side, consequently protonating more dianions of bromothymol with an end goal to invalidate the proton concentration increment.
Thus, when a base is included, it devours the protons in the medium to shape water. In this way, the concentration of protons in the medium declines. To repay this change, the equilibrium reacts by shifting to the privilege i.e., it makes a greater amount of the unbiased pointer separate into the dianion and protons, hence endeavors to invalidate the bother.
