The balanced equation based on the scenes is given by ,
X2 + 3Y2 → 2XY3
Given ,
For the reaction depicted in the molecular scenes , X is red and Y is green .
Through observing the scenes , the balanced chemical equation of the scenes is given by ,
The scenes indicates 3 moles of molecule X2 reacts with 9 moles of molecule Y2 to form 6 moles of tetra atomic molecules XY3.
Thus the balanced equation is given by ,
3X2 + 9Y2 → 6XY3
Divide each side of the equation by 3 , we get , the balanced equation as,
X2 + 3Y2 → 2XY3
What is a balance chemical reaction ?
A balanced chemical reaction is a type of reaction which include the reactants and products in same amount i.e. the no of mole on both side of the reaction is remains same or balanced .
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which of the following is true for a chemical reaction at equilibrium? group of answer choices the rates of the forward and reverse reactions are equal. the concentrations of products and reactants are still changing. all reaction has ceased. the reaction has gone to completion to products. the amount of reactant(s) remaining is always equal to the amount of product(s) formed.
The right response is that the forward and reverse reaction rates are equivalent.
The concentrations of reactants and products are no longer changing macroscopically when the rate of the forward reaction equals the rate of the reverse reaction. On a microscopic level, there might still be very slight variations.
As some reactant(s) will remain at equilibrium, the reaction has not completely ended.
In a chemical reaction, the forward reaction rate is the rate at which reactants are converted into products, while the reverse reaction rate is the rate at which products are converted back into reactants.
The reverse reaction rate can be influenced by factors such as temperature, pressure, and the concentrations.
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If water is added to the saturated solution and equilibrium is re-established, what change occurs in the amount (moles) of dissolved sucrose
When water is added to a saturated sucrose solution, the system adjusts to the change by dissolving more sucrose to maintain equilibrium. Consequently, the amount of dissolved sucrose (moles) increases until a new equilibrium is established.
When water is added to a saturated solution containing sucrose, the equilibrium is disturbed, and a change occurs in the amount of dissolved sucrose. This process can be understood in terms of Le Chatelier's Principle, which states that when a change is made to a system in equilibrium, the system will shift to counteract that change.
In this case, adding water increases the solvent volume, thus decreasing the concentration of the sucrose solution. To counteract this change, the system shifts towards dissolving more sucrose to maintain equilibrium. As a result, the amount (moles) of dissolved sucrose increases.
This increase in dissolved sucrose continues until the solution becomes saturated again, at which point the dissolution and crystallization processes occur at equal rates. The new equilibrium will have a higher number of moles of dissolved sucrose due to the increased volume of solvent.
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classify each electrolyte as an intracellular or extracellular anion (negatively charged ion) or cation (positively charged ion).
Potassium: Intracellular cation
Sodium: Extracellular cation
Phosphate: Intracellular anion
Chloride: Extracellular anion
Positively charged ions are called cations. negative-charged ions are known as anion. cation found inside cells.
Can you consume electrolytes on a daily basis?Electrolytes can be consumed daily. If you often exercise and/or perspire, you should do this in particular. Electrolytes can assist in replenishing minerals lost through sweating or illness, such as salt, magnesium, and potassium.
Is consuming electrolytes harmful in any way?However, excessive electrolyte intake can be harmful, just like with anything else: Hypernatremia, the medical term for too much sodium, can make a person feel lightheaded, nauseated, and dizzy. Hyperkalemia, or having too much potassium, can affect how well your kidneys work and result in cardiac arrhythmia, nausea, and a shaky pulse.
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Using the periodic table, identify the element with the following exception electron configuration: [Kr]5s^1 4a^8Group of answer choicesVRuOsRhTc
The element with the given exception electron configuration of [Kr]5\(s^1\) 4\(a^8\) is Rhodium (Rh), which belongs to the 5th period of the periodic table, has an atomic number of 45, and is a transition metal.
How to identify the element using the periodic table?The given electron configuration, [Kr]5\(s^1\) 4\(a^8\), indicates that the element has a total of 36 electrons, with 18 of them occupying the Kr (krypton) noble gas configuration. This means that the element belongs to the 5th period of the periodic table. The 5\(s^1\) orbital is occupied by a single electron, while the \(4a^8\) configuration indicates that there are eight electrons in the 4th energy level subshell. Based on these characteristics, we can conclude that the element in question is Rh (Rhodium), which has an atomic number of 45 and is a transition metal.
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the reaction of 1.40 g of carbon monoxide with excess water vapor to produce carbon dioxide and hydrogen gases in a bomb calorimeter causes the temperature of the calorimeter assembly to rise from to . the calorimeter assembly is known to have a total heat capacity (calorimeter constant) of . (a) write a balanced equation for the reaction. (b) calculate the internal energy change, , for the reaction of .
(a) The balanced chemical equation for the reaction can be given as:
CO (g) + H2O (g) → CO2 (g) + H2 (g)
(b) The internal energy change (∆U) for the given reaction of 1.40 g of carbon monoxide with excess water vapor to produce carbon dioxide and hydrogen gases in a bomb calorimeter is 0 J.
How to determine the balanced equation(a) The balanced equation for the given reaction of 1.40 g of carbon monoxide with excess water vapor to produce carbon dioxide and hydrogen gases in a bomb calorimeter is given below.
Carbon monoxide (CO) reacts with water (H2O) to produce carbon dioxide (CO2) and hydrogen (H2) gas.
CO (g) + H2O (g) → CO2 (g) + H2 (g)
(b) To calculate the internal energy change (∆U) for the given reaction of 1.40 g of carbon monoxide with excess water vapor to produce carbon dioxide and hydrogen gases in a bomb calorimeter, we can use the following equation:
∆U = -q
where q is the heat energy absorbed by the calorimeter.
The heat absorbed by the calorimeter (q) can be calculated using the following formula:
q = C∆T
where C is the total heat capacity (calorimeter constant) of the calorimeter assembly and ∆T is the change in temperature observed in the calorimeter assembly during the reaction.
The value of C is given as 150 J/°C. The initial temperature of the calorimeter assembly is not provided. So we assume the initial temperature to be same as the final temperature in the calorimeter assembly (30.2°C).
Hence, ∆T = 30.2 - 30.2 = 0°C.
The heat absorbed by the calorimeter (q) is thus given as:
q = C∆T= 150 J/°C × 0°C= 0 J
Substituting the value of q in the equation for ∆U, we get:
∆U = -q= -0 J= 0 J
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at the bottom of the ocean a rock has a mass 25 g. At sea level the same rock wilk have a mass of:
less than 25 g
more than 25 g
exactly 25 g
Answer:
exactly 25 g
Explanation:
The mass of an object is universally the same every where. Even in outer space.
This is because, mass is the amount of matter contained in a substance. Since there is no loss in the amount of matter, the mass of the body stays the same.
It is weight that is subjected to changes with the value of gravity. Weight differs from places to places. A place with higher gravity will have a higher value of weight for any given mass.Mass accounts for every individual matter present in a substance.
When they remain the same, mass does not change. Only a change in the amount of matter in a body can cause variation in mass.
Therefore, at the bottom of the ocean, a body will have the same mass as on top and even at sea level.
Answer:
c. exactly 25 g
Explanation:
What happens to the structure of the protein when the temperature rises above the functional level?
A
denatures
B
increases enzyme function
C
does not disrupt the protein structure
D
protein continues to function as normal
PLEASE HELP ASAP
Answer:
The correct answer is option A
Explanation:
The extreme temperatures lead to the unfolding of a polypeptide chain resulting in a change in composition and generally a loss of function. If the protein working as an enzyme denatures, it will make that protein to lose its enzymatic activity.
Answer:
Denatures
Explanation:proteins are very sensitive to temperature change
Animal cells do NOT
have cell walls. Why do
you think this is an
advantage?
Answer:
Because they don't need them , cell wall which are found in cell, maintain cell shape almost as if each cell has it's own exoskeleton ame this them to stand upright without the need for bones .
Explanation:
Which units express heat capacity? J/°C, J/K, cal/°C, cal/K J/(gi°C), J/(giK), cal/(gi°C), cal/(giK) J, cal °C, K
Answer:
a
Explanation:
The heat capacity of a substance is the heat energy required to rise its temperature per one degree Celsius. Hence its unit is J/°C.
What is heat capacity ?Heat capacity is the amount of heat energy required to raise the temperature of a substance by 1 degree Celsius or 1 Kelvin. It is expressed in the following units:
Joules per degree Celsius (J/°C)
Joules per Kelvin (J/K)
Calories per degree Celsius (cal/°C)
Calories per Kelvin (cal/K)
Joules per gram per degree Celsius (J/(g·°C))
Joules per gram per Kelvin (J/(g·K)) etc.
If in terms of simply the energy, then, The following units are used.
Joules (J) , Calories (cal) , Degrees Celsius (°C), Kelvin (K)
The choice of unit depends on the specific application and the system of units being used. The SI unit for heat capacity is J/K, while the traditional unit is cal/°C.
The use of per gram units is common in the context of specific heat capacity, which is the amount of heat energy required to raise the temperature of a unit mass of a substance by 1 degree Celsius or 1 Kelvin.
Therefore, here, the unit of heat capacity is J/°C.
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what do you think will happen when you put corn starch and water
The corn starch and water will stay separated and eventually sit in the glass as layers. This is due to the 2 fluids having different densities far enough from one another that the fluids do not mix.
Answer:
Cornstarch and water mixed acts both like a solid and a liquid.
Explanation:
Cornstarch and water is a suspension mixture with a solid dispersed into a liquid. When you press the mixture quickly, the starch molecules close together. This causes the water to get trapped between the starch chains and create a semi-rigid structure.
What is the molar enthalpy of neutralization for ethanoic acid otherwise known as acetic acid when mixed with sodium hydroxide
The molar enthalpy of neutralization for ethanoic acid (acetic acid) when mixed with sodium hydroxide can be determined by measuring the heat released or absorbed during the reaction. The neutralization reaction between ethanoic acid and sodium hydroxide can be represented by the balanced chemical equation:
CH3COOH + NaOH -> CH3COONa + H2O
To determine the molar enthalpy of neutralization, the heat change (q) during the reaction is divided by the number of moles of the limiting reactant. The molar enthalpy of neutralization represents the heat released or absorbed per mole of an acid-base reaction.
The molar enthalpy of neutralization for ethanoic acid and sodium hydroxide is typically around -55.9 kJ/mol. This value indicates that the reaction is exothermic, meaning heat is released during the neutralization process.
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Suppose it takes 5 minutes for half of your sample to radioactively decay. If you started with 80 atoms, and have only 5 radioactive atoms left, how many half-lives have occurred?
A 2.400-g sample of meat is subjected to Kjeldahl analysis. The liberated NH3(g) is absorbed by adding 50.00 mL of H2SO4(aq), which is more than enough. This occurs through the reaction 2NH3(g)+H2SO4(aq)→(NH4)2SO4(aq) The excess acid requires 19.90 mL of 0.5510 M NaOH for its complete neutralization.
Answer:
51.04% of protein in the sample
Explanation:
The question is the percentage of protein in the sample and the acid is 0.2496 M H2SO4.
First we need to calculate the moles of sulfuric acid that react:
Moles of sulfuric acid added:
0.0500L * 0.2496mol/L = 0.01248 moles of sulfuric acid.
Moles in excess:
0.01990L * 0.5510mol/L = 0.01096 moles NaOH * (1 mol H2SO4 / 2 moles NaOH) = 0.00548 moles of sulfuric acid.
Moles that react:
0.01248 moles - 0.00548 moles = 7.0x10⁻³ moles of H2SO4 react.
Based on the reaction, the moles of NH3 = Moles of N are:
7.0x10⁻³ moles of H2SO4 * (2moles NH3 / 1 mole H2SO4) = 0.014 moles NH3 = Moles N
The mass of nitrogen (Molar mass: 14g/mol):
0.014 moles N * 14g/mol = 0.196g of N.
The percentage of N is:
0.196g N / 2.400g = 8.17% of N
6.25 times the percentage of nitrogen is the percentage of protein:
8.17%*6.25 =
51.04% of protein in the sampleIt requires two sticks of butter to make a batch of 15 cookies. How much butter will it take to make 300 cookies?
Answer:
40
Explanation:
300÷15=20
20×2=40
hope this helps
Answer:
300(2)
Explanation:
given:
2 sticks of butter
how much butter if 300
multiply it
Which statement describes how a molecule of water is formed?
Hydrogen dissolves an oxygen atom.
Hydrogen chemically bonds with oxygen.
Hydrogen atoms transform into oxygen atoms.
Hydrogen atoms lose their protons to oxygen atoms.
Statement that describes how molecule of water is formed is Hydrogen chemically bonds with oxygen.
A water molecule is consist of two hydrogen atom and one oxygen atom(H₂O). so, two hydrogen atom are formed covalent bond with oxygen. covalent bond is formed by the sharing of electrons. oxygen atom are electronegative and attract the shared electron and form covalent bond. the covalent bond in water molecule is polar and hydrogen have slight positive charge and oxygen have slightly negative charge. these opposite charges attract another molecule of water and this force of attraction is called hydrogen bond.
Thus, Statement that describes how molecule of water is formed is Hydrogen chemically bonds with oxygen.
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Answer:
b. Hydrogen chemically bonds with oxygen.
Explanation:
Help please, take a screenshot who will answer will be brainiest.
Answer:
1. Metals are typically shiny, and good at conducting electricity and heat and have a high melting point. Non-metals are typically dull, and poor at conducting electricity and heat and have a low melting point.
2. Element C and element E.
3. a. It is a poor conductor of electricity
b. It is a good conductor of heat
Explanation:
As it says in the chart at the top of the picture, metals are typically good at conducting electricity and heat and have a high melting point. Non-metals are typically poor at conducting electricity and heat and have a low melting point.
Arrange the following groups in order of decreasing priority that would allow you to determine E/Z, or R/S. Provide a string of letters (e.g. abcd) as an answer with the highest priority listed first, lowest priority last:
a) -CH3 b) -CH2OH c) -CH2NH2 d) -CH2BR
Priority will be given to the group with the highest atomic number. Priority is as follows: -CH2Br > -CH2OH > -CH2NH2 > -CH3
Explain about the absolute arrangement?Absolute configuration is the stereochemical description of the spatial arrangement of atoms within a chiral molecular entity (or group). Since carbon is linked to four different substituents in organic compounds, absolute configuration is frequently relevant.
Absolute Configuration, which distinguishes between right-handed and left-handed stereo structures in chiral compounds, is the spatial arrangement of atoms.
A physically recognized non-centrosymmetric crystal's atomic arrangement as well as its description using unit-cell dimensions, space group information, and average atomic coordinates.
For instance, the stereocenter is unaffected by the reaction of (+)-glyceraldehyde (1) with mercury oxide to produce (-)-glyceric acid (2). As a result, (+)-glyceraldehyde and (-)-glyceric acid must have the same absolute configuration.
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What is the osmotic pressure of a 0.150 M aqueous glycerol (molar mass mass = 92.09 g) solution at 35°C?
What is the mass in grams of 4. 22×10 to the 15 atoms of U
1.66×10⁻⁶g is the mass in grams of 4. 22×10¹⁵ atoms of U. A body's mass is an inherent quality.
A body's mass is an inherent quality. Prior to the discoveries of the atom or particle physics, it was widely considered to be tied to the amount of matter within a physical body. It was discovered that, despite having the same quantity of matter in theory, different atoms and elementary particles have varied masses. There are various conceptions of mass in contemporary physics that are theoretically different but physically equivalent.
moles = 4. 22×10¹⁵/ 6.022×10²³
= 7.00×10⁻⁹
mass = 7.00×10⁻⁹× 238.0
=1.66×10⁻⁶g
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In which phase transition do molecules move directly from a state involving vibration of particles in a fixed position to a state involving random movement of high-speed particles?
Answer:
B: Sublimation
Explanation:
took the test on edge
Answer:
B on edge 2020
Explanation:
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writing and balancing complex half-reactions in basic solution
Writing and balancing complex half-reactions in a basic solution involves several steps, including identifying the oxidation and reduction reactions, balancing atoms other than hydrogen and oxygen, balancing oxygen atoms with water molecules, balancing hydrogen atoms with hydroxide ions, and finally balancing the charges with electrons.
To balance complex half-reactions in a basic solution, one must first identify the oxidation and reduction reactions and balance the atoms involved. Next, the number of oxygen atoms is balanced by adding water molecules to the side deficient in oxygen. Hydrogen atoms are then balanced by adding hydroxide ions to the side deficient in hydrogen. Finally, the charges are balanced by adding electrons to the side that requires charge balance.
In conclusion, writing and balancing complex half-reactions in a basic solution involves a systematic process that ensures conservation of mass and charge. By following the steps of identifying reactions, balancing atoms, adding water molecules and hydroxide ions, and balancing charges with electrons, one can effectively write and balance complex half-reactions in a basic solution.
This skill is crucial in various fields, including electrochemistry and chemical analysis, where understanding and manipulating redox reactions are essential.
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explain how absorbance and concentration date collected in light expiriments can be used to determine the concentration of an unknown solution
The calibration curve is used to determine the concentration of an unknown solution.
What is a spectrophotometer?A spectrophotometer is a device in which the absorbance of a substance could be measured. The absorbance refers to the amount of light that could be passed through a substance.
What we do is to first select the appropriate wavelength the would be used for the study. The absorbance of the solvent without the analyte is first measured. This is called the sample blank. Then several selected concentrations of the analyte is made to interact with light in the spectrophotometer and the absorbance is measured.
This is now used to create a line of best fit called calibration curve that could be used to determine the absorbance of any other concentration of the same solution.
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Do you consider steel to be more or less malleable than the elements that make it? Use the term lattice energy
Steel is less malleable than the elements that make it.
Pure iron is exceedingly malleable and soft. Depending on the amount of carbon present, steel can be soft or hard. Although not as soft as pure iron, very low carbon steels are fairly soft.
Because they are essentially made of metal ions that are packed closely together and encased in an electron sea—the term "sea" is figurative—all metals should be malleable. This is why metal are good electrical conductors. The metal atoms may always be shown to be on planes that will allow them to slide over one another while they are submerged in this sea. The ability of a metal to retain and transport heat is also influenced by the sea, which offers additional degrees of freedom not found in a lattice.
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Which of the following can cause the substance to change phase? Select all that apply.
change in temperature
change of shape
change in mass
change in pressure
Answer:
a and d
Explanation:
how many oxygen atoms are in one mole of o_2 molecules?
A mole of oxygen (\(O_{2}\)) molecules contains 6.022 x 10^23 oxygen atoms.
This number is known as Avogadro's number, and it is the number of atoms or molecules that make up one mole of any substance.
To calculate the number of oxygen atoms in one mole, we multiply Avogadro's number by the number of oxygen atoms in one molecule of oxygen (2).
This gives us 12.044 x 10^23 oxygen atoms in a mole of oxygen molecules.
The significance of Avogadro's number is that it allows us to compare the number of atoms or molecules between two different substances.
For example, if we know that one mole of oxygen molecules contains 12.044 x 10^23 oxygen atoms, and one mole of hydrogen molecules contains 6.022 x 10^23 hydrogen atoms, we can determine that two moles of hydrogen molecules will contain the same number of atoms as one mole of oxygen molecules.
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The strength of van der Waals forces increases as:
A. molecular size decreases
B. molecular size increases
C. number of electrons increases
D. number of electrons decreases
Answer:
B and C
Explanation:
is it multiple choice question??
Van der Waals forces are the interaction between the molecules and the atoms. It increases with an increase in the molecular size and the number of electrons. Thus, options B and C are correct.
What are Van der Waals force?
Van der Waals forces are the weak forces of attraction and repulsion present between the atoms and the molecules of the compounds. They are also called London Dispersion Forces and dipole-dipole forces.
An increase in the number of electrons and size of the molecule increases the surface area and the electron cloud which in turn, increases the Van der Waals force.
The intermolecular force increases as in large atoms or molecules the valence are held loosely as they are far from the nucleus or the center of the atom.
Therefore, the size and the electron increase the Van der Waals force.
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chemical calculation. don't have to rush, take your time.
Answer:
what is the formula of rectangle
Two rabbit species, X and Y, live in an Arctic environment that is also populated by wolves. Species x turns white in the winter and
brown in the spring. Species y stays brown all year. The population of species X has slowly been increasing over the population of
species Y. What is most likely causing this population change?
Answer:
yy
Explanation:
Is aluminum a stable element
Answer:
Aluminum is an reactive metal, however, the only stable form of aluminum is AI-27.
Explanation:
Hope this helps, stay safe and if you have any other questions feel free to ask!
What mass of radon is in 8.17 moles of radon?
Answer:
1813.74g
Explanation:
Given parameters:
Number of moles of radon = 8.17moles
Unknown:
Mass of radon = ?
Solution:
To solve this problem, we use the expression below:
Number of moles = \(\frac{mass}{molar mass}\)
Molar mass of radon = 222g/mol
Now insert the parameters and solve;
Mass of radon = Number of moles x molar mass
= 8.17 x 222
= 1813.74g