Final answer:
The concentrations of[tex]Ba^{2+} and CrO_4^{2-[/tex] in a saturated solution of BaCrO4 with a Ksp of 1×10^{−10} are both 1×10^{−5} M.
Explanation:
The student asked about the concentrations of [tex]Ba^{2+} and CrO_4^{2-[/tex] in a saturated solution of barium chromate (BaCrO4) given that the solubility product constant (Ksp) is 1×10−10. In a saturated solution, the ions Ba2+ and CrO42− would be present in equal molar amounts, as the dissolution of BaCrO4 produces one of each ion. Hence, the Ksp equation for this dissolution is [tex]K_{sp} = [Ba^{2+}][CrO_4^{2-}][/tex]. Since both ions are in a 1:1 ratio, we can set [tex][Ba^{2+}] = [CrO_4^{2-}] = x[/tex]. Therefore, Ksp = x·x = x2 = 1×10^−10, and solving for x gives x = √(1×10^−10) = 1×10^−5M. This is the concentration of both Ba2+ and [tex]CrO_4^{2-[/tex] in the saturated solution.
Which separation method would be most successful in separating the components of a homogeneous mixture?
A) Screening
B) Evaporation
C) Centrifugation
D) Magnetic Separation
Answer: Option (B) is the correct answer.
Explanation:
When a liquid changes into vapors or gas then this process of change is known as evaporation.
A mixture in which solute particles completely dissolve in even composition throughout the solvent then it is known as homogeneous mixture.
For example, when salt is dissolved in water then upon heating it water can be evaporated and crystals of sodium chloride can be obtained.
Whereas screening method is used in the discovery of a drug and it a scientific experimentation method.
When particles of a mixture are separated by spinning then this process is known as centrifugation.
When a magnetic force is used to separate magnetic particles present in a mixture then this process is known as magnetic separation.
Thus, we can conclude that evaporation is the separation method would be most successful in separating the components of a homogeneous mixture.
If the ΔG value of a reaction is negative, what is true of the ΔG value of the reverse reaction?
A. ΔG > 0
B. ΔG < 0
C. ΔG = 0
D. ΔG fluctuates
Which of the following does not apply to obtaining a career in chemistry?
•There is only one path to get a career in chemistry.
•There are many paths to getting a career in chemistry.
•Start by talking to teachers and counselors about different career options.
•Talk to students already enrolled in the programs that you are interested in.
ANSWER: There is only one path to get a career in chemistry.
EXPLANATION: There are many paths of career in Chemistry and not only one. It would not be justified to say that there is only one path to get a career in chemistry. Careers in chemistry would include Biochemistry, Forensic Scientist, Research Scientist, Chemical Engineer, Chemical Plant Operator and even a Science teacher or Chemistry professor in a school or university.
Which characteristics apply to the gaseous state? i. low density ii. high density iii. rapid molecular motion iv. slow molecular motion v. large distance between particles?
The characteristics applicable to gaseous state are low density, rapid molecular motion and large distance between particles.
What are the characteristics of gaseous state?Substances in gaseous state are easy to compress as they have large inter- molecular distances.They also have the unique property of expansion owing to which large amounts of gases can fit into small volumes.
As gases occupy large volumes as compared to their masses they have low density.Owing to their large inter-molecular spaces they have more degree of freedom due to which there is rapid molecular motion.
The kinetic energy possessed by gas molecules is highest in gases due to large spaces present between the molecules.They have high thermal energy as molecules are far apart and heat causes molecules to move faster.
Learn more about characteristics of gases,here:
https://brainly.com/question/10014242
#SPJ2
True or false if you refuse to submit a breath you’re in a blood test is an assumable for evidence in a DUI criminal proceedings in Florida
Answer:
True
Explanation:
During hydrolysis, ___________ must be added before the bonds can be broken. (look at flash animation on hydrolysis)
The correct answer is water.
During hydrolysis, _____water______ must be added before the bonds can be broken.
For example, sucrose undergoes hydrolysis to break into glucose and fructose. Here sucrose is a disaccharide and glucose and fructose are monosaccharides.
Sucrose + H₂O → glucose + fructose
Esters are formed by the combination of carboxylic acid and alcohol.
But the hydrolysis of ester causes the release of carboxylic acid and alcohol.
RCOOR'(ester) + H₂O → RCOOH(carboxylic acid) + R'OH(alcohol)
When 8 moles of lithium metal react with excess oxygen gas, how many moles of lithium oxide can be produced? 4Li + 2O2 → 2Li2O
Calculate the equilibrium constant k for the isomerization of glucose-1-phosphate to fructose-6-phosphate at 298 k. express your answer numerically using two significant figures. hints
The equilibrium constant for isomerization reaction is [tex]\boxed{9.615}[/tex]
Further Explanation:
The standard Gibbs free energy change in a reaction [tex]\left( {{{\Delta {\text{G}}_{{\text{rxn}}}^{{^\circ }}} \right)[/tex] is the difference of sum of the standard free energies of formation of product molecules and sum of standard free energies of formation of reactant molecules at the standard conditions. The formula used to calculate the value of standard Gibbs free energy change for a reaction [tex]\left( {{{\Delta {\text{G}}_{{\text{rxn}}}^{{^\circ }}} \right)[/tex] is as follows:
[tex]\Delta\text{G}_{\text{rxn}}^{\circ}=\sum\text{n}\Delta\text{G}_{\text{f}(\text{products})}^{\circ}-\sum\text{m}\Delta\text{G}_{\text{f}(\text{reactants})}^{\circ}[/tex]
Here, n is the stoichiometric coefficients of products, and m are the stoichiometric coefficients of reactants in a balanced chemical equation.
The formula to determine the relationship between change in standard Gibbs free energy [tex]\left( \Delta{\text{G}^{\circ}} \right)[/tex] and equilibrium constant [tex]\left({\text{K}}\right)[/tex] is given as follows:
[tex]{\Delta }}{{\text{G}}^{{^\circ }}} = - {\text{RTlnK}}[/tex] ......(1)
Here,
[tex]\Delta{\text{G}^{\circ}[/tex] is the standard Gibbs free energy change.
[tex]{\text{R}[/tex] is the gas constant.
[tex]{\text{T}}[/tex] is the temperature in Kelvin.
[tex]{\text{K}}[/tex] is the equilibrium constant.
The isomerization of glucose-1-phosphate to fructose-6-phosphate occurs in 2 steps:
The reaction of step 1 is as follows:
[tex]{\text{glucose - 1 - phosphate}} \to {\text{glucose - 6 - phosphate}}[/tex]
......(2)
[tex]\Delta{\text{G}^{\circ}_{1}[/tex] for equation (2) is [tex]- 7.28\;{\text{kJ/mol}}[/tex]
The reaction of step 2 is as follows:
[tex]{\text{fructose - 6 - phosphate}} \to {\text{glucose - 6 - phosphate}}[/tex]
......(3)
[tex]\Delta{\text{G}^{\circ}_{2}[/tex] for equation (3) is [tex]- 1.67\;{\text{kJ/mol}}[/tex]
Reverse the reaction of step 2.
[tex]{\text{glucose - 6 - phosphate}} \to {\text{frutcose - 6 - phosphate}}[/tex]
......(4)
[tex]\Delta{\text{G}^{\circ}_{3}[/tex] for equation (4) is [tex]+ 1.67\;{\text{kJ/mol}}[/tex]
Add equation (1) and (3) to get the final equation.
[tex]{\text{glucose - 1 - phosphate}} \to {\text{frutcose - 6 - phosphate}}[/tex]
To calculate [tex]\Delta {\text{G}}_{{\text{rxn}}}^{^\circ }}[/tex], add [tex]\Delta{\text{G}^{\circ}_{1}[/tex] and [tex]\Delta{\text{G}^{\circ}_{3}[/tex] as follows:
[tex]\Delta{\text{G}^{\circ}_{\text{rxn}}=\Delta{\text{G}^{\circ}_{1}+\Delta{\text{G}^{\circ}_{3}[/tex] ......(5)
Substitute [tex]- 7.28\;{\text{kJ/mol}}[/tex] for [tex]\Delta{\text{G}^{\circ}_{1}[/tex] and [tex]+ 1.67\;{\text{kJ/mol}}[/tex] for [tex]\Delta{\text{G}^{\circ}_{3}[/tex] in equation (5).
[tex]\begin{aligned}\Delta {\text{G}}_{{\text{rxn}}}^{{^\circ }} &= - 7.28\;{\text{kJ/mol + }} + 1.67\;{\text{kJ/mol}}\\{\text{}}&= - 5.61\;{\text{kJ/mol}}\\\end{aligned}[/tex]
For equilibrium constant (K), rearrange equation (1)
[tex]{\text{K}}={\text{e}}\frac{-\Delta{\text{G}}^{\circ}}{\text{RT}}[/tex] ......(6)
Substitute [tex]- 5.61\;{\text{kJ/mol}}[/tex] for [tex]\Delta{\text{G}^{\circ}[/tex],[tex]8.314\;{\text{J/mol}} \cdot {\text{K}}[/tex] for R and [tex]298\;{\text{K}}[/tex] for T in equation (6)
[tex]\begin{aligned} {\text{K}}&= {{\text{e}}^{\frac{{ - \left( { - 5.61\;{\text{kJ/mol}}} \right)}}{{\left( {8.314\;{\text{J/mol}} \cdot {\text{K}}} \right)\left( {\frac{{{\text{1J}}}}{{1000{\text{kJ}}}}} \right)\left( {298\;{\text{K}}} \right)}}}}\\&= {{\text{e}}^{2.2634}}\\&= 9.615\\\end{aligned}[/tex]
The equilibrium constant for the reaction is 9.615.
Learn more:
1. The change in standard gibbs free is for a reaction: https://brainly.com/question/10838453
2. Determination of the equilibrium constant for pure water: https://brainly.com/question/3467841
Answer details:
Grade: Senior Secondary School
Subject: Chemistry
Chapter: Chemical Equilibrium
Keywords: Standard Gibbs free energy, equilibrium, constant, glucose-1-phosphate and fructose-6-phosphate.
Under conditions where ketone bodies are being produced in the liver, how many atps can be produced from a molecule of palmitic acid if all resulting molecules of acetyl-coa are converted into β-hydroxybutyrate
129 molecules of ATP is produced if all resulting molecules of acetyl-coa are converted into β-hydroxybutyrate.
What is Beta oxidation?This is a metabolic process involving multiple steps by which fatty acid molecules are broken down to produce energy.
Palmitic acid is a 16 carbon fatty acid and undergoes 7 beta-oxidation reactions which is shown below
7 NADH + 7 FADH2 + 8 acetyl-CoA
Acetyl-CoA being converted to acetoacetate with β-hydroxybutyrate being the reduced form.
The average ATP production is 131 minus 2 ATP which was used up for the initial activation of every fatty acid thereby bringing the amount to 129ATP.
Read more about Beta oxidation here https://brainly.com/question/7210431
HELP PLEASE. STRUGGLING. Which of the following is true in an acidic solution? A)The molarity of hydroxide is double the molarity of hydronium. B)The molarity of hydroxide is equal to the molarity of hydronium. C)The molarity of hydroxide is lower than the molarity of hydronium. D)The molarity of hydroxide is higher than the molarity of hydronium.
Benzene and its derivatives undergo a type of substitution reaction in which a hydrogen atom is replaced by a substituent, but the stable aromatic benzene ring is regenerated at the end of the mechanism.
Solve an equilibrium problem (using an ice table) to calculate the ph of each solution: part a a solution that is 0.195 m in hc2h3o2 and 0.125 m in kc2h3o2
To calculate the pH of the given solution, use an ICE table to determine the concentrations of HC2H3O2 and C2H3O2-. Substitute these concentrations into the Ka expression to calculate the Ka value. Finally, use the definition of pH to determine the pH of the solution.
Explanation:To calculate the pH of a solution that is 0.195 M in HC2H3O2 and 0.125 M in KC2H3O2, we can use an ICE table. First, we set up the ICE table to determine the concentrations of HC2H3O2 and C2H3O2- at equilibrium. Once we have these concentrations, we substitute them into the Ka expression to calculate the Ka value. Finally, we use the definition of pH to determine the pH of the solution.
Learn more about pH calculation here:https://brainly.com/question/36153729
#SPJ3
The feed to a batch process contains equimolar quantities of nitrogen and methane. write an expression for the kilograms of nitrogen in terms of the total moles n(mol) of this mixture.
What is the ph of a 2.7 m solution of hclo4?
The concentration of H+ ions in the solution of 2.7 molar HClO₄ is 2.7 molar. Thus the pH of the acid is -0.43.
What is PH?pH of a solution is the measure of its H+ ions concentration. It determines how much acidic or basic the solution is. Mathematically it is the negative logarithm of H+ ion concentration.
A pH of 7 indicates that the solution is neutral and a pH below 7 is acidic and pH of above 7 is for basic solution. Thus strong acids such as chloric acid HClO₄ , have a pH very less. But it depends on the concentration of solute in the solution.
Given that the molarity of the acid is 2.7 molar. It furnish equal number of moles H+ ions and anions. Thus the concentration of H+ ion is 2.7 M.Now the pH is calculated as follows:
pH = -log [H+]
= -log (2.7)
= -0.43
Hence, the pH of the solution is -0.43.
To find more about pH refer the link:
https://brainly.com/question/491373
#SPJ5
________ is the science of obtaining reliable measurements from photographs.
Calcium’s atomic number is 20. it forms ions with 18 electrons. what is the electrical charge of a calcium ion?
Calcium, with an atomic number of 20, forms ions by losing 2 electrons, leaving it with 18 electrons and 20 protons. This gives it a net charge of +2.
Explanation:The electrical charge of a calcium ion can be determined by looking at its number of electrons compared to its atomic number. Calcium's atomic number is 20, meaning it has 20 protons and normally 20 electrons. However, the question states that it forms ions with 18 electrons, so it has lost 2 electrons to become a calcium ion.
When an atom loses electrons, it becomes positively charged. Since calcium has lost 2 electrons, its electrical charge is +2.
Therefore, the electrical charge of a calcium ion is +2.
Learn more about Calcium ions here:https://brainly.com/question/31830797
#SPJ2
The molar mass of carbon dioxide is 44.0 g/mol. a mass of 150.0 grams of carbon dioxide is equivalent to how many moles?
A) 3.00 mol
B) 3.41 mol
C) 29.3 mol
D) 106 mol
The molar mass of carbon dioxide is 44.0 g/mol. a mass of 150.0 grams of carbon dioxide is equivalent to 3.41 mol of carbon dioxide.
What is mole?In the International System of Units, the mole is the unit of substance quantity (SI). How so many elementary units of a certain substance are present in an item or sample is determined by the quantity of that material. There are precisely 6.022×10²³ elementary entities in a mole.
For instance, although having differing volumes and weights, 10 moles containing water along with ten moles of mercury both contain the same quantity of material, and the mercury includes exactly 1 atom for every molecule of water.
M(CO₂)=44.0 g/mol
m(CO₂)=150.0 g
n(CO₂)=m(CO₂)/M(CO₂)
n(CO₂)=150.0/44.0=3.41 mol
Therefore, 3.41 mol of carbon dioxide is there.
To know more about mole, here:
https://brainly.com/question/15209553
#SPJ2
Calculate the mass of 0.00456 moles of (NH4)2SO4
Mass of (NH4)2SO4 is 0.6025g
Finding the mass of a compoundUsing the equation:
Number of moles = Mass /Molar Mass
Given,
0.00456 as Number of moles of (NH4)2SO4
and Molar mass as
N = 14.007 g/mol=2(14.007)
H = 1.008 g/mol= 8(1.008)
S = 32.065 g/mol= 32.065
O = 16 g/mol= 4(16)
(NH4)2SO4 = 132.143 g/mol
Mass of (NH4)2SO4 = 132.143 g/mol x 0.00456=0.6025g
See related answer on Finding mass when moles is given:https://brainly.com/question/13015854
When does a scientists create the conclusion
How many grams of h3po4 are in 521 ml of a 9.30 m solution of h3po4?
Final answer:
To find the mass of H3PO4 in 521 ml of a 9.30 M solution, convert the volume to liters, multiply by the molarity to get moles, and then convert moles to grams using the molar mass of H3PO4. Approximately 474.6434 grams of H3PO4 are in 521 ml of a 9.30 M solution.
Explanation:
The student has asked how many grams of H3PO4 are in 521 ml of a 9.30 M solution. To find this, we use the formula:
Calculate the number of moles of H3PO4 by multiplying the molarity (M) of the solution by the volume of the solution in liters.
Convert the moles of H3PO4 to grams using the molar mass of H3PO4 (which is approximately 98 g/mol).
First, we convert 521 ml to liters (521 ml * 0.001 L/ml = 0.521 L). Next, we calculate the moles of H3PO4 (9.30 M * 0.521 L = 4.8433 mol). Finally, we multiply the number of moles by the molar mass of H3PO4 to get the mass in grams (4.8433 mol * 98 g/mol = 474.6434 g).
Therefore, there are approximately 474.6434 grams of H3PO4 in 521 ml of a 9.30 M solution.
which element has atoms that can form single, double, and triple covalent bonds with others atoms of the same element
If 4.35 grams of zinc metal react with 35.8 grams of silver nitrate, how many grams of silver metal can be formed and how many grams of the excess reactant will be left over when the reaction is complete? Show all of your work. unbalanced equation: Zn + AgNO3 yields Zn(NO3)2 + Ag
B) into the same funnel is poured carefully 50 ml of hexane (density = 0.660 g/ml) so that the other two layers are not disturbed. the hexane forms a third layer. the funnel is stoppered and the mixture is shaken vigorously. after standing, two layers separate. which compound(s) are in which layer?
What acid and what base would you choose to prepare the salt potassium perchlorate (kclo4)?
Answer : The perchloric acid and potassium hydroxide base is used to prepare the salt of potassium perchlorate, [tex](KClO_4)[/tex]
Explanation :
when the perchloric acid react with the potassium hydroxide as a base to form a salt of potassium perchlorate, [tex](KClO_4)[/tex]
The balanced chemical reaction will be,
[tex]HClO_4+KOH\rightarrow KClO_4+H_2O[/tex]
By the stoichiometry, we can say that 1 mole of perchloric acid react with the 1 mole of potassium hydroxide base to give 1 mole of potassium perchlorate and 1 mole of water as a product.
Hence, the perchloric acid and potassium hydroxide base is used to prepare the salt of potassium perchlorate, [tex](KClO_4)[/tex]
How much energy would be released if 1.0 g of material were completely converted into energy?
Final answer:
The energy released from converting 1.0 g of mass into energy is 9 × 10¹³ joules (J), using the equation E = mc², where c is the speed of light.
Explanation:
According to Einstein's famous equation E = mc², where E represents energy, m is mass, and c is the speed of light in a vacuum, the energy released from completely converting 1.0 g of mass into energy is tremendously large. Since the speed of light, c, is approximately 3 × 10⁸ meters per second, and the mass m is 1.0 g (which is 1/1000 of a kilogram), the calculation is E = (1.0 g / 1000) × (3 × 10⁸ m/s)². This results in an energy release of 9 × 10¹³ joules (J), which is equivalent to about twice the energy released by the atomic bomb dropped on Hiroshima.
Calculate the number of moles of magnesium used in trial 1. the molar mass of magnesium is 24.305 g/mol.
Final answer:
To calculate the number of moles of magnesium, divide the mass of magnesium used in the trial by its molar mass of 24.305 g/mol. An example calculation for 24.305 grams of magnesium would yield exactly 1 mole of magnesium.
Explanation:
To calculate the number of moles of magnesium used in trial 1, you should use the molar mass of magnesium and the given mass of magnesium from the trial. If the mass of magnesium used in trial 1 was not provided in the question, it must be known to perform the calculation.
Here's how you can calculate it:
First, ascertain the mass of magnesium used in trial 1 (let's assume it is 'x' grams).
Then, use the molar mass of magnesium which is 24.305 g/mol.
Divide the mass of magnesium by its molar mass to find the number of moles: Number of moles = mass of magnesium (grams) / molar mass of magnesium (g/mol).
For example, if you used 24.305 grams of magnesium in trial 1, the calculation would be:
Number of moles = 24.305 g / 24.305 g/mol = 1 mol
What are three physical properties often analyzed to identify covalent compounds?
Covalent compounds can be identified by their low melting and boiling points, non-conductivity of electricity, and solubility in nonpolar solvents.
Explanation:Covalent compounds, also referred to as molecular compounds, are usually identified through several physical properties such as their low melting and boiling points, non-conductivity of electricity, and their solubility in nonpolar solvents.
Low melting and boiling points: Covalent compounds don't have strong intermolecular forces, resulting in low melting and boiling points.
Non-conductivity of electricity: Since most covalent compounds don't dissociate into ions in solutions, they typically do not conduct electricity.
Solubility in nonpolar solvents: Due to the 'like soluble like' rule, covalent compounds tend to be soluble in nonpolar solvents rather than polar solvents such as water.
Learn more about Covalent Compounds here:https://brainly.com/question/35554107
#SPJ6
In carbon dioxide (CO2), there are two oxygen atoms for each carbon atom. Each oxygen atom forms a double bond with carbon, so the molecule is formed by two double bonds.Two double bonds means that the total number of electrons being shared in the molecule is
A) Two
B) Four
C) Six
D) Eight
Answer: Option (D) is the correct answer.
Explanation:
The atomic number of carbon is 6 and atomic number of oxygen is 8. Therefore, there are 4 valence electrons in carbon and there are 6 valence electrons in oxygen.
Each carbon and oxygen atom shares 4 electrons to form one double bond. It is known that a [tex]CO_{2}[/tex] molecule has 2 double bonds hence, there will be total sharing of 8 electrons.
Thus, we can conclude that two double bonds means that the total number of electrons being shared in the molecule is 8.
Answer:The correct answer is option D.
Explanation:
In carbon-dioxide molecule, there are two oxygen atoms and one carbon atom.
Sharing of two electrons between the atom give rise to single bond.
In single bond = 2 electrons
So, in a double bond = 2 × 2 = 4 electrons
There are two doubles bonds in the carbon-dioxide molecule, so the total number of the electrons ebbing shared in the molecule is =
=4 electrons × 2 = 8 electrons
Hence,the correct answer is option D.
Which activity can occur without the use of energy?
of the following, ____ has the lowest boiling point
cl2
o2
n2
h2