It is true that acid flux is used on non-electrical metal joints, such as radiators but need to be removed so that the joint does not corrode after soldering.
Acid flux must be removed after soldering in order to prevent corrosion of the junction and is intended to be used on non-electrical metal connections, such as radiators.
A substance called acid soldering flux is applied to the joint between two pieces of metal to clean and shield it.
Fluxing achieves three objectives: it lessens oxidation, enhances electrical contact, and promotes uniform solder flow. Flux helps eliminate oxidation from the electrical lead you are soldering and blocks airflow to the lead, preventing additional oxidation.
Water-soluble flux is another name for organic acid flux. These organic acids, including citric, lactic, and stearic acid, are used to make this sort of flux. After that, organic solvents like alcohol or isopropyl are added to the acids. Metal oxides can be removed more successfully using organic acid flux.
As a result, it is accurate to say that acid flux must be removed after soldering in order to prevent corrosion of the joint on non-electrical metal components like radiators.
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the activity of the enzyme used for the synthesis of oxaloacetate from pyruvate and co2 is increased by which acts as an allosteric activator. rubp acetyl coa rubisco g3p 3pg
The activity of the enzyme used for the synthesis of oxaloacetate from pyruvate and carbon dioxide is increased by acetyl-coenzyme A which acts as an allosteric activator.
After glycolysis, pyruvate is changed over into acetyl-coenzyme A in arrange to enter the citric corrosive cycle.
Oxaloacetate synthesis from pyruvate is a vital anaplerotic response that makes oxaloacetate from pyruvate. The protein could be a mitochondrial protein containing a biotin prosthetic gather, requiring magnesium or manganese and acetyl-coenzyme A.
Pyruvate carboxylase could be a biotin-containing enzyme that catalyzes the arrangement of oxaloacetate within the nearness of an allosteric activator, acetyl-coenzyme A, from pyruvate.
Furthermore, small pyruvate is decarboxylated to acetyl-coenzyme A by the pyruvate dehydrogenase complex. Or maybe, pyruvate is changed over to the 4-carbon oxaloacetate by pyruvate carboxylase.
This switch happens fundamentally in reaction to an increment in free fatty acids oxidation. Free fatty acids from adipocytes are promptly oxidized within the liver.
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your friend is studying a specific exergonic reaction. your friend hypothesizes that the addition of enzyme x will reduce the δg of this reaction, thus allowing it to proceed spontaneously. what do you think of your friend's hypothesis?
An enzyme do not change delta G.
What is exergenic reaction?1)A reaction that releases free energy is known as an exergonic reaction. This type of reaction can happen spontaneously, unaffected by external forces, because it releases energy rather than absorbing it.
2) Exergonic reactions are those in chemistry where the change in free energy is negative. A system's total amount of available energy is measured by its free energy; negative changes indicate that energy has been released, whilst positive changes indicate that energy has been stored.
Enzyme only changes activation energy .Enzyme do not change delta G so, this hypothesis does not fit with what is know about the reaction.
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^20 10 Ne is an isotope of neon. How many protons does it have? How many neutrons? How many valence electrons? [Separate your answers with a space, as in 4 5 2.]
An isotope of neon with formula 20/10 Ne will possess 10 protons, 10 neutrons and 8 valence electrons i.e. 10, 10, 8.
What is an isotope?Isotopes are two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. Thus, isotopes have the same atomic number but a different mass number.
According to this question, an isotope of neon, an inert gas, has a formula of 20/10 Ne. The mass number of this isotope is 20 while the atomic number is 10.
This means that the number of neutrons is 20 - 10 = 10 while the number of protons is 10. Neon like all other noble gas has a filled shell and a valence electron of 8.
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A student is preparing 0.5 L of a 0.1 M magnesium chloride solution. The student uses the following steps to get started.
Step 1: Gather a graduated cylinder, balance, and stirring rod.
Step 2: Calculate the number of moles of magnesium chloride needed.
Step 3: Add the water to reach 0.5 L of magnesium chloride solution and stir until dissolved.
Step 4: Label the solution 0.1 M MgCl2.
The process as described is incomplete. What would fix the process so that it is accurate?
A) The student made a mistake in Step 3 by adding enough water to reach 0.5 L of water. Exactly 0.5 L of water should have been added.
B) The student made a mistake in Step 1 by getting a graduated cylinder. The student should have gotten a beaker.
C) The student made a mistake in Step 4 by labeling the solution 0.1 M MgCl2. It should be 0.1 g MgCl2.
D) The student made a mistake in Step 2 by calculating the moles of magnesium chloride. The grams should be measured to make the solution.
The student made a mistake in Step 2 by calculating the moles of magnesium chloride. The grams should be measured to make the solution.
How do you prepare a solution?In preparing a solution of a solid, we would need to follow a number of steps so that the desired concentration of the solution is what we would end up having.
The steps to be followed are;
1) Gather a graduated cylinder, balance, and stirring rod.
2) Calculate the mass of magnesium chloride needed.
3) Add the water to reach 0.5 L of magnesium chloride solution and stir until dissolved.
4) Label the solution 0.1 M MgCl2.
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Describe the characteristics of single replacement reaction, how it is identified, and what determines if this reaction will occur. Give an example in your response.
The single replacement reaction is that in which one element is substituted for another element but in the same compound.
What is a single replacement reaction?A single replacement reaction is also known as a single displacement reaction. The single replacement reaction is defined as the reaction in which one element is substituted for another element in a compound. In the beginning, the starting element is always will be pure metal, such as pure zinc metal.
Identification:
We can determine the single replacement reaction when one element replaces another element in the same compound. This kind of reaction is represented by: A + BC → B + AC.
Determination:
The single replacement reaction can be determined when a less reactive element can be replaced by a more reactive element in a compound.
So we can conclude that one element is replaced by another element in the single replacement reaction.
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4.00 mol co2 is placed in a 6.00 l container at a temperature where 12.3% of it decomposes. what is the value of kc for the following at this temperature?2 co2(g) equilibrium reaction arrow 2 co(g) o2(g)
Answer: 0.000806
Explanation: Set up the equilibrium table, find x and from there find your Kc=(Co)^2*(O2)/(O2)^2
Why would tobacco companies start adding ammonium salts to cigarettes?
Answer:
The tobacco industry has for many years used ammonia as a relatively innocuous additive to augment certain flavors, to economize on costs by expanding or “puffing” the cured leaf, to denicotinize (reduce the amount of nicotine in) tobacco, and even to reduce some of the carcinogens in tobacco smoke.
For 10 points who do you know that the sun is made out of hydrogen and helium.
How would I explain it to a 3rd grader
The sun is made up of hydrogen and helium because these two gases are responsible for fusion reaction which generate light and heat energy.
Why sun is made up of hydrogen and helium?
Scientists use the device of spectroscopy in order to determine the composition of the Sun. The Sun is made up of light elements such as hydrogen and helium. It is composed of 74% hydrogen atom and 25% helium. In the core of the sun, gravitational forces produce huge pressure and temperatures. The temperature of the sun in this layer is 27 million degrees Fahrenheit that is equals to 15 million degrees Celsius. Hydrogen atoms are fuse together creating helium atom. This process is known as nuclear fusion reaction.
So we can conclude that the sun is made up of hydrogen and helium so that the fusion reaction is initiated.
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When a molecule of oxygen moves from outside of a eukaryotic cell to eventually be reduced by complex iv of the electron transport chain, how many phospholipid bilayers does it need to cross?.
The oxygen molecule needs to cross three phospholipid bilayers.
The process of ATP synthesis in which electrons are transported from NADH or FADH2 to oxygen is known as oxidative phosphorylation. The process of cellular respiration ends at this stage. Chemiosmosis and the electron transport chain are two interrelated processes that make up oxidative phosphorylation. As electrons move from one molecule to the next in the electron transport chain, energy is released throughout the process, which is then utilized to create an electrochemical gradient. However, during chemiosmosis, ATP is produced using the energy stored in the gradient.
Oxygen is found at the end of the electron transport chain, where it takes electrons and picks up protons to make water.
Therefore, it follows that a molecule of oxygen must travel through three phospholipid bilayers, which are represented by the cell membrane and the external and internal membranes of the mitochondria, in order for it to go through the electron transport chain.
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HELPPPPPPPPPP PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Answer:
hi there, are u okay . what do u need help for
Answer:
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not
Explanation:
how much boiling water would you need to raise the bath to body temperature (about 37 ∘c )? assume that no heat is transferred to the surrounding environment.
The Mass of water need to raise the bath to body temp is mathematically given as
M=4.76kg
This is further explained below.
What is the amount of water needed?Generally, The movement of kinetic energy from one media or item to another, or from an energy source to a medium or object, is what we understand to be the phenomenon of heat.
Radiation, conduction, and convection are the three different ways that this kind of energy transfer may take place.
In conclusion, Let us assume that M is the mass of water that has reached a temperature of 100 degrees Celsius.
The heat that is obtained by cold water is equal to the heat that is lost by boiling water.
Final temperature =37C
25x(37-25)=Mx(100-37)
M=300/63
M=4.76kg
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CQ
How much boiling water would you need to raise the bath to body temperature (about 37c )? Assume that no heat is transferred to the surrounding environment. Imagine that your water heater has broken, but you want to take a bath. You fill your bathtub with 25kg of room-temperature water (about 25c ). You figure that you can boil water on the stove and pour it into the bath to raise the temperature
After energy from food molecules has been extracted to make atp, electrons are transferred to a final acceptor. When the final electron acceptor is an organic molecule, the process is termed?.
When the final electron acceptor is an organic molecule the process to make ATP molecules is termed fermentation.
What is the fermentation pathway?The fermentation pathway is an anaerobic series of chemical reactions by which the cell can generate ATP (the energy coin of all types of cells) in order to perform metabolic activities such as cell differentiation and cell reproduction. During this process, pyruvate molecule is used as the final electron acceptor.
Therefore, we can conclude that the fermentation pathway uses pyruvic acid or pyruvate as the final acceptor, which is an organic molecule.
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1.
Sir William Ramsey is one scientist credited with identifying the noble gas argon. Sir Ramsey
separated nitrogen gas from the air and reacted it with an excess of magnesium, producing solid
magnesium nitride. However, a small sample of an unreactive gas remained with a density different
from the density of the nitrogen gas. Sir Ramsey identified the unreactive gas as argon and later
went on to discover neon, krypton, and xenon.
State, in terms of valence electrons, why the noble gases that Sir Ramsey discovered have similar
chemical properties.
The noble gases have similar chemical properties because they have the same number of valence electrons.
What are noble gases?The noble gases are the gases that are found in the last group of the periodic table. These are the gases that have been said to be unreactive under normal conditions. Thee have been found to react only under stringent conditions as we can see.
Given the fact that the octet rule states that an element that contains eight electrons in its outermost shell would be unreactive and all the noble gases have complete octets hence the noble gases are unreactive.
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What is the ATOMIC NUMBER for an element with 5 protons, 6 neutrons and 2 electrons?
The element's Atomic number , which has 5 protons, 6 neutrons, and 2 electrons (the atomic number is the number of protons) = 5
What in an atomic number?the number assigned to a chemical element according to its atomic number in the periodic system, which places the elements in ascending order of the number of protons in their nuclei. As a result, the atomic number is also the number of protons, which in a neutral atom is always equal to the amount of electrons.
Briefing:Protons and neutrons are added to determine an element's mass number. The only number that may change while maintaining the identity of an element is the number of neutrons for that element (because the atomic number is the number of protons).
Mass number = protons + neutrons
According to the given data;Given:
5 protons,
6 neutrons
2 electrons
Atomic number = ?
We know that the Mass number = protons + neutrons:
Mass number = protons + neutrons
Mass number = 5 + 6:
Mass number = 11
The element's Atomic number , which has 5 protons, 6 neutrons, and 2 electrons (the atomic number is the number of protons) = 5.
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explain the realationship between heat and thermal energy
Answer: both are a way of heat
Explanation: see you can see the there is a lot of heat in the oven but like the sun thermal energy is so its heat but it was made naturally
Which of the following increases the motion of atoms and molecules?
Answer:
a rise in tempature
Explanation:
look it up
if the isotopes of Candium were truly isotopes (not candy pieces) what characteristics would they have in common?what would be different about each isotope?
If the isotopes of Cadmium were truly isotopes then their atomic number is the same but the atomic mass is different from one another.
What is isotopes?An isotope is a species of atoms that have the same atomic number as well as the position of that atom in the periodic table. They are identical in chemical behavior but the physical properties of that atom due to different atomic masses. The atoms belong to the same element, having same atomic number which is expressed as Z but having different mass number A, this is called isotope. For example, Carbon atom has three isotopes i.e. carbon-12, carbon-13 and carbon-14. These elements of carbon having mass numbers 12, 13 and 14 respectively.
So we can conclude that the isotopes of Cadmium have same atomic number but different mass number.
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Think about a wave model with a rope. How do you think the size of the wave going through the rope is affected by how far you moved your arm up and down or how far you moved your arm back and forth?
A.
The farther I move my arm, the larger the size of the wave in the rope.
B.
The less I move my arm, the larger the size of the wave in the rope.
C.
How far I move my arm has no effect on the size of the wave in the rope.
Given that the disturbance travels along the length of the rope, the farther I move my arm, the larger the size of the wave in the rope.
What is a wave?A wave is a disturbance along a medium which transfers energy. We know that a wave could be classified based on the nature of the propagation of the wave as the transverse or the longitudinal waves.
The wave that is created along a string is a longitudinal wave. The direction of the wave motion is the same as that of the disturbance. It is very easy to create a wave on a string when the sting is moved vigorously and the wave is found to travel quickly across the length of the rope is we can see from the image that I have attached to make the concept and the context of the answer a bit more clearer to the student in this case.
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How many mols are present in 3.07 grams of carbon?
Answer:
multiply by Avogadro's number:
3.07x6.002x10^23
=0.2556054185018347moles
Explanation:
Please help balance the chemical equation.
No links or files! I will report
Answer:
H3PO4+3NaBr->3HBr+Na3PO4
Explanation:
H3PO4+3NaBr->3HBr+Na3PO4
this equation is balance because, the number of
H atom and Na atom is equal to right hand side reaction and Left hand side reaction.
A tank is filled with 300 g of ozone (O3(g)) at -58.75oC. The pressure inside the tank is 6250 kPa.
Calculate the volume (in L) of the tank.
The volume of gas in the tank is determined as 1.78 L.
What is the volume of gas in the tank?The volume of gas in the tank is calculated by applying idle gas law as follows;
PV = nRT
where;
n is the number of moles of the gasP is the pressure of the gasV is the volume of the gasR is ideal gas constant = 8.314 L.kPa/mol.KT is temperature of the gas = -58.75⁰C = 214.25 Kn = reacting mass / molar mass
n = (300 g) / (3 x 16 g)
n = (300 g) / (48 g/mol)
n = 6.25 moles
The volume of the gas is calculated as follows;
V = nRT/P
V = (6.25 x 8.314 x 214.25)/(6250)
V = 1.78 L
Thus, the volume of ideal gas increases with increase in temperature.
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Please discuss the following items in your introduction:
• Law of Conservation of Mass (with example using an equation)
• Reactants/ products
• Word equations/ skeleton/ balanced chemical equations
Law of conservation of mass states that in a closed system, the mass would be the same.
In a reaction, the compounds’ undergoing reaction is called reactants and the resultant of the reaction is called products.
Word equation uses words instead of chemical formulas. The skeleton equations use chemical formulas without mentioning the state of the compounds or the concentration. In balanced chemical reaction, mass and charge would be balanced.
Law of conservation of mass is similar to law of conservation of energy. It says that in a closed system, the mass would remain the same as mass is neither created nor destroyed.
[tex]H_{2}O[/tex] → [tex]H_{2} + O_{2}[/tex]
In this reaction, [tex]H_{2}O[/tex] is the reactant which has a mass of 18. H₂ and O₂ are the products with mass of 2 and 16 respectively.
In word equations, equation 1 can be written as
Water → Hydrogen + Water
In skeleton equation,
H₂0 → H₂ + O₂
In balanced chemical reaction,
2 H₂0 → 2 H₂ + O₂
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If an atom contains one electron and one proton, will it carry any charge or not?
Answer:
Neutral, no charge
Explanation:
Proton is positive, while electron is negative.
Sum of both is 1 - 1 = 0
so the atom is neutral, which means it doesn't carry any charge.
Elements on the Periodic Table are identified by name and also by a chemical symbol. Which of the following chemical symbols is NOT written correctly?
A) Be
B) CA
C) O
D) CI
Answer: D
Explanation:
This is wrong according to the Periodic Table here's a image! Hope this helped! :D
Starting with a 20. 0 ppm stock solution of the food dye yellow 6, you take a 5. 00 ml aliquot using a volumetric pipette and dispense the stock solution into a 10. 00 ml volumetric flask and then dilute with water. What is the concentration in ppm of the diluted solution?.
The concentration of the diluted solution of the food dye yellow 6 is found to be 10.0ppm.
A solution's concentration is an indicator of how much solute has been dissolved in a certain volume of solvent or solution. A solution with a significant concentration of dissolved solute is one that is concentrated. When there is just a minimal amount of dissolved solute in a solution, it is said to be diluted.
Parts per million (ppm) measurements of concentration indicate how many solute particles there are in every million solution particles.
Given:
Initial concentration, C1 = 20.0ppm
Initial Volume, V1 = 5mL
Final Volume, V2 = 10mL
To find:
Final concentration, C2 = ?
Formula:
C1V1 = C2V2
Calculations:
20 x 5 = C2 x 10
C2 = 20 x 5 / 10
C2 = 10.0ppm
Result:
The diluted solution of the food dye yellow 6 is found to have a concentration of 10.0ppm.
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What is the
wavelength of a
yellow light with a frequency
of 5.2 x 10¹4 Hz?
The wavelength of a yellow light with a frequency of 5.2 x 10¹4 Hz is 6 × 10⁻⁷.
What is wavelength ?
A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is typically defined in wireless systems in meters (m), centimetres (cm), or millimetres (mm) (mm).
When electromagnetic radiation such as radio waves, light waves, or infrared (heat) waves travel through space, they leave behind distinctive patterns. Each wave has a distinct size and shape. Wavelength is the separation between peaks (high points).
By measuring the distance between any two identical locations on adjacent waves, the wavelength can always be found. When a longitudinal wave is present, the distance between one compression and the next is measured to determine the wavelength.
γ = λf
λ = γ / f
= 3 × 10 ⁸ / 5 × 10 ⁴
= 0.6 × 10⁻⁶
λ = 6 × 10 ⁻⁷
Thus, The wavelength of a yellow light with a frequency of 5.2 x 10¹4 Hz is 6 × 10⁻⁷.
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Answer:
5.8 x 10^-7
Put in this answer and got it correct
the entropy change of any system and its surroundings, considered together, and resulting from any real process is positive, approaching zero when the process approaches
False, The entropy change of any system and its surroundings, considered together, and resulting from any real process is negative, approaching zero when the process approaches.
What is an entropy change?
An entropy change can be defined as the change that occurs in the state of disorder or randomness of a thermodynamic system that is associated with the conversion of heat or enthalpy into work.
Any system with a great degree of disorderliness has said to have more entropy.
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If you measure a concentration of 25 mmol/l in the titration at ph = 10 and a concentration of 13 mmol/l with the titration at ph = 12.5 what is the concentration of ca2+? enter you answer in mmol/l but only enter a 2 digit number in the box, the program does not like numbers.
The concentration of [tex]Ca^{2+}[/tex] is 25mmol/l
Using complex-forming processes, complexometric titrations are primarily used to identify metal ions. Despite the fact that a variety of complexing agents can be utilized for this purpose, in actuality, the titrants are virtually always compounds with iminodiacetic acid functional groups. Titration is done in a solution with a pH of 10 (with an ammonium buffer added to promote the complexation of the [tex]Ca^{2+}[/tex] and [tex]Mg^{2+}[/tex] ions).
Since eriochrome black T forms deep red-wine-colored complexes with just a very small portion of the [tex]Mg^{2+}[/tex] ions, it is employed as the indication to show the end point. The most prevalent titration indicators in complexometric experiments are organic dyes, which work by creating colored. When the reaction is complete, the color changes because the indicator is replaced by EDTA, which creates a more stable complex with the metal.
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A sample of sulfur consisting of three isotopes has a relative atomic mass of 32.133. The following table gives the relative abundance of two of these isotopes. Mass number of isotope 32 33 Relative abundance / % 92.4 1.9 Use this information to determine the mass number of the third isotope. Give your answer to the appropriate number of significant figures.
The mass number of the third isotope, given the data from the question is 34
How to determine the mass numberThe mass number of the third isotope can be obtained as illustrated below:
Relative atomic mass =32.133Mass of 1st isotope = 32Abundance of 1st = 92.4%Mass of 2nd isotope = 33Abundance of 2nd = 1.9%Abundance of 3rd = 100 - (92.4 + 1.9) = 5.7%Mass of 3rd isotope = ?Relative atomic mass = [(Mass of 1st × Abundance of 1st) / 100] + [(Mass of 2nd × Abundance of 2nd) / 100] + [(Mass of 3rd × Abundance of 3rd) / 100]
32.133 = [(32 × 92.4) / 100] + [(33 × 1.9) / 100] + [(Mass of 3rd × 5.7) / 100]
32.133 = 29.568 + 0.627 + (Mass of 3rd × 0.057)
32.133 = 30.195 + (Mass of 3rd × 0.057)
Collect like term
32.133 - 30.195 = Mass of 3rd × 0.057
1.938 = Mass of 3rd × 0.057
Divide both sides by 0.057
Mass of 3rd = 1.938 / 0.057
Mass of 3rd = 34
Thus, we can conclude that the mass of the 3rd isotope is 34
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Missing part:
See attached photo
each of the reactants i nreaction a is a single sugar molecule also called a monosaccharide. what prefix before saccharide would you use to describe surcrose
In A, two types of molecules are generated. Two monosaccharides are bonded together by a condensation reaction in which glycoside bonds form between the monosaccharides and release the water molecule. In a specific, A reaction, fructose, and glucose molecules combine to generate sucrose (disaccharide).
In the case of the B reaction, two distinct amino acids (monomers) combine to generate a third molecule, a dipeptide; the bond formed between these two molecules is known as a peptide bond (amine group of first amino and cool group of second amino acid). This reaction is also condensation and results in the formation of water molecules. The fact that both create water molecules and dimers from two monomers is shared in this region.
Monosaccharides (from Greek monos: single, saccharin: sugar) are the most fundamental molecules (monomers) from which all carbohydrates are formed.
They are typically water-soluble white crystalline solids. Despite their name, only a few monosaccharides have a sweet flavor (sugars).
Sucrose, the most common table sugar, is a disaccharide made up of one molecule of each of the two monosaccharides D-glucose and D-fructose.
Monosaccharides include glucose (dextrose), fructose (levulose), and galactose.
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