Answers
Answer:
A protein is just a long chain of amino acids. So, one could say that the monomer of a protein is an amino acid. Here is a diagram of a protein and amino acid for reference:
Related Questions
Estimate the molar concentration of 0.50 wt% (0.0050 mass fraction) benzene (C6H6) dissolved in liquid ethanol (C2H5OH) at 20°C. The density of liquid ethanol is 789 kg/m3 at 20°C. This solution of the solute benzene dissolved in the solvent ethanol is considered dilute.
Answers
The molar concentration of benzene is 0.05mol/L
Data;
Mass Fraction = 0.0050Temperature = 20°CDensity of Ethanol = 789 kg/m^3 Molar Concentration of Benzenemolar mass of benzene = 78g/mol
molar mass of ethanol = 46g/mol
mole fraction of benzene is
[tex]mole fraction = \frac{moles of benzene}{total mole}[/tex]
Let's substitute the values and find the mole fraction of benzene
[tex]_yC_6H_6 = \frac{\frac{0.005}{78} }{(\frac{0.005}{78})+ (\frac{1-0.005}{46}) }\\ _yC_6H_6 = 0.00295[/tex]
The density of benzene given is 789 kg/m^3
Molar concentration of the solution is
[tex]M = \frac{789}{0.046} = 17.15Kmol/m^3[/tex]
The concentration of benzene is the product of mole fraction and the molar concentration of the solution
[tex]M = 0.00295 * 17.152 = 0.05Kmol/m^3= 0.05mol/L[/tex]
The molar concentration of benzene is 0.05mol/L
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write the reaction for ferric hydroxide dissolving in NaOH. hint combine the two equilibrium reaction
Answers
The properly balanced chemical equation for this chemical reaction is written as follows:
[tex]FeCl_{3}(aq)+3Na0H(aq) \rightleftharpoons Fe(OH)_3(s)+3NaCl(aq)[/tex]
What is a chemical reaction?A chemical reaction can be defined as a chemical process that involves the continuous transformation (rearrangement) of the ionic, atomic or molecular structure of a chemical element by breaking down and forming chemical bonds, in order to produce a new chemical compound while new bonds are formed.
The chemical reaction of aqueous ferric hydroxide that is dissolved in aqueous sodium hydroxide produces ferric hydroxide and aqueous sodium chloride. Thus, the properly balanced chemical equation for this chemical reaction is written as follows:
[tex]FeCl_{3}(aq)+3Na0H(aq) \rightleftharpoons Fe(OH)_3(s)+3NaCl(aq)[/tex]
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A large beaker has 6.75 L of a solution containing 5.25 moles of copper (II) sulfate in water. What is the molarity of the solution?
A: 9.9 M
B: 10 M
C: .78 M
D: 8M
Answers
The molarity of the solution in a large beaker that has 6.75 L of a solution containing 5.25 moles of copper (II) sulfate in water is 0.78M.
How to calculate molarity?The molarity of a solution can be calculated using the following formula:
M = n/V
M = molarity of solutionn = number of moles V = volume of solutionMolarity = 5.25/6.75
Molarity = 0.78M
Therefore, the molarity of the solution in a large beaker that has 6.75 L of a solution containing 5.25 moles of copper (II) sulfate in water is 0.78M.
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The box shows the element nitrogen as it appears in the
periodic table,
N
Nitrogen
Which two parts are needed to make a neutral atom of nitrogen?
A Aruscles with seven protons and seven neutrons
B. A nucleus with three protons and four neutrons
C. Electron clouds with a total of 14 electrons
D. Electron clouds with a total of seven electrons
Answers
Answer:
Option D. Electron clouds with a total of 7 electrons.
Explanation:
For an atom to be neutral (i.e having a charge of zero), the number of protons and electrons must be equal.
Thus, to know which option is correct, we shall determine the number of protons and electrons in the nitrogen atom as given in the question above.
From the question given above, we obtained the following:
Atomic number = 7
Mass number = 14
Number of protons =?
Number of electrons =.?
Next, we shall determine the number of protons in the nitrogen atom as follow:
Atomic number of an element is simply defined as the number of protons in the atom of the element. Mathematically,
Atomic number = proton number
Atomic number = 7
Therefore,
Number of protons = 7
Next, we shall determine the number of electrons in nitrogen atom as follow:
Since the atom is neutral (i.e having a charge of zero), the number of protons and electrons are equal i.e
Number of protons = number of electrons
Number of protons = 7
Therefore,
Number of electrons = 7
Thus, the nitrogen atom must have 7 electrons in order for it to be neutral.
**** Check ****
Charge of atom = Proton – Electron
Charge = 0
Proton = 7
Electron = 7
Charge of atom = Proton – Electron
0 = 7 – 7
0 = 0
Answer:
A and D
Explanation:
Took test.
What do you know about social science?
Answers
Answer:
once hydrogen ions are outside the membrane they are allowed to flow back in. this flow is changed to energy that is stored in the bonds of new molecules.
Explanation:
a competition between a given substance and its dissolved species is ?
Answers
Answer:
Explanation:
It is odd to describe the presence of a given substance and its dissolved species as a competition but the state is called an equilibrium in solubility.
Answer:
Solubility
Explanation:
Mark that
The amount of given substance and dissolved species is constant at equilibrium .
As per le ch atler's principle
If you change the concentration it would affect the Equilibrium n
What cells do you think is in metaphase? why?
Answers
state three reasons why air is
•Chassifield as a mixture
One is through sublimation
Answers
Answer:
Air is considered as a mixture because it is composed of various separate components. The air has no characteristic properties of its own. ur welcome :)
Explanation:
How do you write 72,000,000 in scientific notation
Answers
Answer:
7.2 × 10^7 is the correct answers.
Thank you ☺️☺️
predict the block, period and group of (Z:12)
Answers
Explanation:
Atomic number = 12
Block = s-block
Period = 3rd
Group = 2nd
Normally the capital ÎGo° for a reaction would be determined at standard temperature with each reactant at a concentration of 1 M. Letâs assume that the 1 M 2-PG solution will reach the same equilibrium ratio that would be observed under standard conditions. The enzyme enolase catalyzes the conversion of 2-PG to phosphoenolpyruvate (PEP) in living systems. You find that when you add enolase to your 2-PG solution it reaches an equilibrium with 0.68M PEP and 0.32 M 2-PG. What is the capital ÎGo° for this reaction?
Use R= 1.987 cal/mol.K
a. +559 cal/mol
b. - 559 cal/mol
c. +379 cal/mol
d.-379 cal/mol
Answers
Answer:
d.-379 cal/mol
Explanation:
ΔG = ΔG⁰ + RT ln K
for equilibrium ΔG = 0
ΔG⁰ + RT ln K =0
ΔG⁰ = - RT ln K
PG ⇒ PEP
K = [ PEP ] / [ PG ]
= .68 / .32
= 2.125
ΔG⁰ = - 1.987 x 273 x ln 2.125
= - 409 Cal / mole
Option d is the nearest answer .
Which electromagnetic wave has lowest frequency and shortest wavelength
Answers
How many moles in 6.4 g of H2O?
46 mol
124 mol
.025 mol
.36 mol
Answers
Explanation:
Given
Weight of Water (H2O) = 6.4 gms
To find
Number of moles of water = ?
Solution
we know that molar mass of H2O = 18 g
Now,
[tex]Number \: of \: moles =\frac{Given \: weight \: of \: substance}{molar \: mass \: of \: substance} [/tex]
Number of moles = 6.4/18 = 0.355~ 0.36 moles
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Answer:
Explanation:
h2o = 18 gmol-1
1mol =18 g
18 g =1mol
6.4g =1/18*6.4
= 0.355
=0.36mol
what about this?
Which of these best explains the distribution of natural resources?
A. Resources are distributed evenly across Earth's systems.
B. Resources are distributed where they are needed by humans.
C. Resources are distributed unevenly and often must be moved for human use.
D. Resources are located in areas where they can be transported without damage to the environment.
Answers
Answer:
c
Explanation:
resources are distributed unevenly and often must be moved for human use
Answer:c
Explanation: correct on edg 2020
explain how heat is related to thermal energy
Answers
Answer: Heat energy is another name for thermal energy.
Explanation:
As thermal energy comes from moving particles, it is a form of kinetic energy. Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature.
Answer:
When a substance heats up, the rise in temperature makes these particles move faster and bump into each other. Thermal energy is the energy that comes from the heated up substance. The hotter the substance, the more its particles move, and the higher its thermal energy.
Guys i need help with these questions! I will give brainliest to the first person who answers
Answers
Determine the number of moles of CO2 that contain 7.93 x 1023 O atoms.
Answers
Answer:
This question requires use of Avogrado’s constant that states there are 6.02 x10^23 constituent particles contained in the amount of a substance given by one mole. Constituent particles are usually molecules, ions or atoms. Therefore there are 18.06x10^23 total atoms, 12.04x10^23 oxygen atoms, 6.02x10^23 carbon atoms and 6.02x10^23 carbon dioxide molecules.
3. Materials that easily break when a force is applied like glass are said to be
A. malleable B: brittle C. ductile D. elastic
4. Which of the materials below is a poor conductor of heat?
A Iron B. Wood C. Gold D. Copper
5. is the characteristic or trait that can be observed when a matter reacts to
another substance,
A. Intensive Physical Property
C. Chemical Property
B. Extensive Physical Property D. Physical Property
6. property is the characteristic or trait of matter that does not depend on the amount.
A. Intensive Physical Property
C. Chemical Property
B. Extensive Physical Property D. Physical Property/
7. is the characteristic or trait of matter that can be observed or perceived with our senses easily
without changing its chemical composition.
A Intensive Physical Property
C. Chemical Property
B. Extensive Physical Property D. Physical Property
8. Phase of matter where particles are relatively far apart and practically independent of each other.
A. Solid B. Liquid C. Gas D. Plasma
Cloccify the following pyamnles as pure substance or mixture:
Answers
Answer:
3. B
4. B
5. C
6. A
7. D
8. C
Explanation:
3. A material or substance is said to be BRITTLE If it can be broken easily when there is an application of force e.g glass
4. A material that cannot conduct heat and electricity is called an INSULATOR. Among the given options, WOOD is a poor conductor of heat i.e. it cannot withstand hear. Iron, gold and copper are all metals, hence, very good conductors.
5. Matter which constitutes all substances tend to react with one another, however, when the observed trait or characteristic is called a CHEMICAL PROPERTY.
6. Physical property of matter can either be intensive or extensive. INTENSIVE PHYSICAL PROPERTY is that characteristic or trait of matter that does not depend on the amount. Example is temperature, density etc
7. PHYSICAL PROPERTY is the property of matter that can be observed or perceived with our senses easily without changing its chemical composition or nature. Example of physical property is melting.
8. Matter exists in three states; solid, gas and liquid. In the GASEOUS state of matter, particles are relatively far apart or scattered and practically independent of each other. This allows gas to be able to diffuse.
A red shirt obsorbs red light true or false
Answers
Answer:
A red shirt appears red to our eyes because the shirt absorbs the red wavelengths of visible light. The shorter the wavelength of light, the more energy it has.
Explanation:
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The density of copper is 8.68 g/mL use the density value to determine how many moles are
contained in a 125 mL sample.
Answers
Answer:
17.1 mol
Explanation:
(8.68g/mL * 125 mL) = 1085 g
1085 g/ (63.55 g/mol) = 17.1 mol
Which two forms of heat transfer work together to heat water in a plastic bottle?
a. reflection and convection
b. conduction and convection
c. radiation and reflection
d. convection and reflection
Answers
Definitions of heat and work
Answers
Answer:
Hear is the transfer of thermal energy between system.
Work is the transfer of mechanical energy between two systems.
Write a balanced chemical equation (using subscripts and an arrow) and noting all physical states for the reaction of chlorine gas and ozone gas (O3) to produce chlorine monoxide gas and oxygen gas.
Answers
Answer:
O3 => CLO + O2
Explanation:
ozone gas yields one Chlorine Monoxide gas, and two Oxygen gas. i forgot how to explain it well, but I know how to do it and will help in the future if needed :)
How many moles in 109.6 g of Cl₂?
Answers
Answer:
1 grams Cl2 is equal to 0.014103178856514 mole.
Explanation:
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How many particles are in 56 L of nitrogen gas at standard conditions?
0 1.2 x 1023 particles
O 2.5 particles
O 1.5 x 1024 particles
O 2.5 x 1024 particles
Answers
Answer:
The molar mass of N
2
is 28 g/mol.
56 grams of N
2
=
28g/mol
56g
=2moles
At STP, 1 mole of any gas occupies a volume of 22.4 L.
2 moles of N
2
at STP will occupy a volume of 2×22.4=44.8L
number of SO42- ions in 20.4 g Cr2(SO4)3
Answers
✅
IamSugarBee
One mole of or 392 g of chromium sulphate gives 3 moles of sulphate ions. Thus 30 g of chromium gives 0.15 moles of sulphate ions or 9.39 ×10²² ions.
What are ions?Ions are charged substances formed by electron lose or gain by an atom. If an atom gain an electron it acquire one unit of negative charge and if it lose an electron it acquires a positive charge.
The ionization of chromium sulphate is written as follows:
[tex]Cr_{2}(SO_{4})_{3} \rightarrow 2Cr^{3+} + 3SO_{4}^{2-}[/tex]
Hence, one moles of chromium sulphate forms 3 moles of sulphate ions. One mole of chromium sulphate is 392.18 g/mol. Thus number of moles 20.4 g of the compounds is 20.4 / 392.18 = 0.052 moles.
The number of moles of sulphate ions produced by 0.052 moles of chromium sulphate is calculated as follows:
0.052 × 3 = 0.15 moles.
One mole of sulphate ion contains 6.022 × 10 ²³ions. Thus number of ions in 0.15 moles is 0.15 ×6.022 × 10 ²³ = 9.39 ×10²² ions.
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The nutrition label tells us that 13 g of a serving of gummy bears (i.e. 10 gummy bears) is made of sugars. Let's assume that all of the sugar is sucrose. The balanced reaction for the combustion of sucrose is given below. How much heat is released from the combustion of the sucrose in a single gummy bear?
2C12H22O11+24O2→24CO2+22H2O ΔHrxn=−11,286kJ
Answers
This problem is providing the mass of gummy bears which are assumed to contain 13 g of sucrose, which undergoes combustion and produces -214.3kJ of heat according to the following:
Heat of reactionIn chemistry, when a fuel undergoes combustion, a reaction with oxygen, it produces carbon dioxide and water in a complete combustion. In such a way, with the given reaction, we can write the heat of reaction as -11,286 kJ per mole of reaction:
[tex]\Delta H=-11,286\frac{kJ}{mol\ rxn}[/tex]
Which means that if we need the total heat released by 13 g of sucrose, one must apply the following dimensional analysis including this fuel's molar mass (342.3 g/mol):
[tex]Q=-11,286\frac{kJ}{mol\ rxn}*\frac{1mol\ rxn}{2molC_1_2H_2_2O_1_1}*13gC_1_2H_2_2O_1_1 *\frac{1molC_1_2H_2_2O_1_1}{342.3gC_1_2H_2_2O_1_1} \\\\Q=-214.3kJ[/tex]
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59 Q.No. 28 b Hydrogen peroxide can act as oxidizing as well as reducing agent with example.
Answers
Answer:
Hydrogen peroxide can function as an oxidizing agent as well as reducing agent.
H2O2 act as oxidizing agent in acidic medium.
Explanation:
Example : 2FeSO4 +H2SO4 +H2O2 —>
(ferrous sulphate)
Fe2(SO4)3 +2H2O
(ferric sulphate)
Which equation describes the process of photosynthesis?
carbon dioxide + glucose + sunlight → water + oxygen
oxygen + water + sunlight → glucose + carbon dioxide
oxygen + glucose + sunlight → water + carbon dioxide
carbon dioxide + water + sunlight → glucose + oxygen
Answers
Answer:
The FIRST option, give me brainliest answer pls
Explanation:
The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen
Answer:
(a)
carbon dioxide+ glucose+ sunlight * water + oxygen
Explanation:
I Took This Test Before, I Hope You Get A Good Grade On The Rest Of The Questions
In photosynthesis, carbon dioxide (CO2) and water (H20) combine to form the sugar glucose (C6H1206) in the following reaction:
6CO2 + 6H20 - CH1206+?
Assuming this equation is balanced, which part is missing from the product side?
-12 hydrogen atoms
-06 carbon atoms
-6 oxygen atoms
-12 oxygen atoms
Answers
The part that is missing from the product side = 6 oxygen atoms.
The equation of photosynthesisPhotosynthesis is the process by which green plants traps in energy from the sun, through their chlorophyll, which they use in the manufacture of sugar with oxygen as a by-product.
The balanced equation of photosynthesis;
6CO2 + 6H2O + (energy) → C6H12O6 + 6O2
From the equation given,
6CO2 + 6H20 - CH1206+?
The missing part of the product = 6O2 (-6 oxygen atoms)
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