Which of the following are equivalent to 2,500 ppm Cu2+? (There may be more than one answer) MW: Cu (63.55) a) 2.5 ppb Cu2+ b) 2,500,000 ppb Cu c) 2.5 ppt Cu2+ d) 39.34 mM e) 0.03934 M f) 0.07868 N (in precipitation reaction) g) 0.07868 N (in redox into Cu+)
Q: nonsynonymous substitutions
A: In this question we have to explain the measures the rate of nonsynonymous substitutions and explain...
Q: Test Yourself 4: For the reaction: CH3CH3(g) + 2H2O(g) + Ni(s) 5 2C0(g) + 5H2(g) + Ni(s), AH= +300 k...
A: In the given reaction Ni is not consumed so it is a catalyst in the reaction. Also when any change...
Q: What is the pH of a 0.20 M solution of sodium acetate? The Ka for acetic acid is 1.8 x 10⁻⁵?
A:
Q: A system expands from a volume of 1.00 L to 2.00 L against a constant external pressure of 1.00 atm....
A:
Q: What is the 1) vapor pressure and 2) osmotic pressure of a 26.0% (w/w) aqueous glucose solution at 4...
A:
Q: A 0.800 M HCl was diluted to a final volume of 500. mL . If the new concentration is 0.20M . What wa...
A:
Q: How many grams of solid calcium cyanide, Ca(CN)₂ must be added to 200.0 ml of 0.370M hydrocyanic aci...
A: Ca(CN)2+H+ ---->HCN+ Ca2+ pH =pKa+log [CN-]/HCN
Q: The electron has a polarity: a) positive b) negative c) Positive or negative depending on the mediu...
A: polar molecule arises when one of the atoms exerts a stronger attractive force on the electrons in ...
Q: When the skeleton oxidation-reduction equation MnO4- + Br- ---------> Br2 + Mn2+ is balanced in ...
A: Given reaction:- MnO4- + Br- ---------> Br2 + Mn2+
Q: Fill in the blanks: но он The type of organic reaction shown is
A: We have to tell the type of organic reaction.
Q: 11 A type of solutions that contains the maximum amount of solute that is capable of being dissolv...
A: Solution has two part- a solvent and a solute. There are various types of solution such as unsaturat...
Q: Calculate the change in temperature of 10 kg of water released 232 kJ of heat
A:
Q: e stable t
A:
Q: Q1. What will be the product of the following reactions and mention the type of reactions (SN1, SN2,...
A:
Q: a. Se, b. 20. Show the direction of the dipole in each bond. Label the atoms with &+ and 8-. a. H-F ...
A: Here the atom which is more elctronegative will carry fractional negative charge and less elctronega...
Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 222. kJ during a ...
A: The enthalpy change of the given reaction is = +222. kJ The work done by the gas mixture is =-167. k...
Q: After 24 days, 2.0 mg of an original 128 mg sample remain. Find the half-life of the sample. a. 2 d...
A: Given: Initial amount of sample = 128 mg Remaining amount of sample = 2.0 mg Time elapsed = 24 days
Q: Compute the empherical formula of the following: a. 19.16 Sn and 80.9% I b. 25.9% Fe and 74.1% Br
A: With the help of percentage of composition of elements and their atomic masses we can determine the ...
Q: Calculate the mass percent of water in the compound Nickel(II) chloride hexahydrate
A:
Q: :O: HICIH bent QUESTION 18 What is the geometry relative to the C atom on the left in the Lewis stru...
A: Here we have to determine the molecular geometry of the indicated carbon atom present in organic com...
Q: Convert 1,500 m3 to a) cm3 b) L c) ft3
A: For these type of questions, one must know about the basic details of the conversions.
Q: Consider the unbalanced redox equation, Vo, (aq) + SO2(3) + H*(aq) The reducing agent is →VO²"(aq) +...
A:
Q: 2. 5.0 mL of 0.500 M sodium acetate (NaCH3COO) is mixed with 45.0 mL of 0.500 M acetic acid (CH;COOH...
A:
Q: 十 H- Br
A: Here, hydrogen and Br added to the double bond as per the markovnik rule , as per it the Hydrogen go...
Q: c. Indicate the new C-C bonds in each molecule and then provide the organohalides that were used to ...
A:
Q: color of the flame produced when using in AAS in potassium determination a. orange b. none of th...
A: Potassium produce flame color blue purple. Hence e option is correct that is purple.
Q: Q2. Show the mechanism of the following reactions. N3 THF, rt `Br + NaNg reflux i. + CH;OH a ii. CH,...
A: i) Axial attack of N3- is favored ii) The reaction undergo SN1 mechanism. iii) The reaction involve...
Q: 33 On the following reactions: MnO4− + I− → MnO4− + IO4−, which is the oxidizing agent? Select one: ...
A: MnO4- + I- → MnO2 + IO4- In this given recation, MnO-4 is reduced and I- is oxidised.
Q: 2. Kinetic data for the following reaction are summarized below. H2Q2(aq) + 31(aq) + 2H*(aq) I3 (aq)...
A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...
Q: What is the wavelength (angstroms) of a photon that has an energy of J? 4.38x10-18
A:
Q: (Q96) The equilibrium constant with respect to concentration (K) fer the reaction betwween nitregen ...
A:
Q: What is the protien gradient?
A: What is the protien gradient?
Q: 4. Using neopentane, illustrate the three steps involved in a free radical chlorination reaction. St...
A: Given, Free radical chlorination of neopentane
Q: Ammonium carbamate, NH4CO2NH2, decomposes as follows: NH4CO2NH2(s) = 2NH3(g) + CO2(g) Starting with ...
A: Reaction:- NH4CO2NH2(s) <-------> 2NH3(g) + CO2(g)
Q: 6 A sample of lead glass is prepared by melting together 20.0g silica , SiO2 and 80.0g of lead (II) ...
A: we are required to find the mole fraction of silica in the glass which is prepared by mixing 20 g of...
Q: What will be the appropriate pH of a buffer prepared by mixing 100 ml of 0.1 M Na2HPO4 and 100 ml of...
A: amount of given concentration salt concentration Na2HPO4 = 100 ml x 0.1 M = 10mmol acid concentratio...
Q: A reaction is carried out at 25 °C with AHO = 20 kcal/mol and AS° = 25 cal/K-mol. (R: 8.314 J/K-mol ...
A: Answer: This is the question based on the second law of thermodynamics.
Q: Why pi(π) bond needed a longer wavelength than the sigma bond?
A: In chemistry, all the bonds are generally classified in two two major groups i.e, ionic and covalent...
Q: dimensional analysis
A:
Q: (Q99) Consider the formation of sulfur dichloride gas from gaseous sulfur and chlorine gas: S8 (g) +...
A: Complete solution is given below in next step
Q: 1) Which of the following compounds are amphoteric? -both HSO3^- and O^2- -HF -CO3^2- -O2 -BF3 ...
A: A solution is said to be acid if the solution contains amount of H+ higher than amount of OH- , then...
Q: Which of the following would you expect to have the lowest boiling point? a. CH3OCH3 b. The boili...
A: Boiling point of the compound is directly proportional to the molecular mass of the compound and tge...
Q: A type of solution that contains the maximum amount of solute that is capable of being dissolved is ...
A: A type of solution that contains the maximum amount of solute that is capable of being dissolved is ...
Q: A reaction from lab should theoretically produce 59.68 grams of product. If the percent yield of thi...
A: Given, Percent yield = 58.55 % Theoretical yield of product = 59.68 g Actual yield of product = ? ...
Q: . Rank the following sets of substituents in order of priority according to the Cahn- Ingold-Prelog ...
A:
Q: Nucleophilic Aromatic Substitution Draw the curved arrow reaction for this experiment showing the fo...
A: Solutions We Know that These products can be obtained from following...
Q: A solution was made by dissolving 3.75 g of a solute in 108.7 g of acetone . The solution boiled at ...
A: Given data,Mass of solute=3.75gMass of acetone=108.7gBoiling point of solution=56.58oCBoiling point ...
Q: Draw curved arrows to show the mechanism for the step of the HMG-synthase reaction shown below. Arro...
A: Mechanism of the HMG- synthase reaction shown below
Q: Activity 2 Direction: Complete the table by writing all types of intermolecular forces (IMF) that wi...
A: Intramolecular forces These are the forces that hold atoms together within a molecule. Intermolecul...
Q: Atomic Weights of the following elements: N = 14 amu Na = 23 amu C = 12 amu H = 1 amu O = 16 amu 1. ...
A: Since you have posted multiple questions, we'll answer the first one. If you want any other question...
Which of the following are equivalent to 2,500 ppm Cu2+? (There may be more than one answer)
MW: Cu (63.55)
a) 2.5 ppb Cu2+
b) 2,500,000 ppb Cu
c) 2.5 ppt Cu2+
d) 39.34 mM
e) 0.03934 M
f) 0.07868 N (in precipitation reaction)
g) 0.07868 N (in redox into Cu+)
Step by step
Solved in 2 steps
- We want to determine the purity of alum sample bought in a local pharmacy in Miagao. A Chem 28 student determined the purity gravimetrically of a sample of alum, K2SO4:Al2(SO4)3:24H20. A 1.5879-g sample was dissolved and the aluminum precipitated as Al(OH)3. The precipitate was collected by filtration, washed, and ignited to give a product Al203 weighing 0.1572 g. Show your calculation to determine the purity of the alum sample.A 0.879 g sample of a CaCl2·2H2O/K2C2O4·H2O solid salt mixture is dissolved in ~100mL of deionized water. The precipitate, after having been filtered and air-dried, has a mass of 0.284 g. The limiting reactant in the salt mixture was later determined to beCaCl2 ·2H2O. a.Write the ionic equation for the reaction. b.Write the net ionic equation for the reaction. c.How many moles and grams of CaCl2 ·2H2O reacted in the reaction mixture? d.How many moles and grams of the excess reactant, K 2C2O 4H2O, reacted in the mixture? e.How many grams of the K2C2O4·H2O in the salt mixture remain unreacted (inexcess)? f.What is the percent by mass of each salt in the mixtureToxic Cr(VI) can be precipitated from an aqueous solution by bubbling SO2 through the solution. How much SO2 is required to treat 3.00 x 10° Lof 5.00x102 mMCr(VI)? 2Cro + 3S0, + 4H* Cr (SO,),+2H,0 2C:0- Cr,(SO,)3 + 2H,0 kg
- Lead hydroxide, Pb(0H)2(s) | Pb(0H)2(s)Pb+2(aq)+20H-(aq) | Ksp=1.4x10-20 H2O(aq)H*(aq)+OH-(aq) Pb(OH)2 Water Kw=1.00x10-14 Molar masses 241.21 Pb 207.20 OH- 17.01 If Pb+2(aq) is controlled by the solubility of Pb(OH)2, what Pb+2(aq) concentration is expected if pH=p0H=7.00? b. What pH would be required to lower Pb+2(aq) to 2.07 ppb? a.C0 96 Gran The Rate of a Reaction Table of Content and Preface prod.mheducation.com/epub/sn_7e4a4/data-uuid-326b493dfd7f46f3b7d174cd33673180 + X Price vs Kes. O Stanton Iron Canop... 6 Stanton Iron Canop.. Dental Health Servi. O Vitamins | Supplem.. S https://ezto.mhedu. Duke Energy Example 14.1 Write the rate expressions for the following reactions in terms of the disappearance of the reactants and the appearance of the products: (a) I¯ (aq) + OCI" (aq) → Cl¯ (aq) + OI (aq) (b) 302 (g) → 203 (g) (c) 4NH3 (g) + 502 (g) → 4NO (g) + 6H2O (g) Solution (a) Because each of the stoichiometric coefficients equals 1, [_I] V At A [OCI¯] rate = %3D At [_I0] V (b) Here the coefficients are 3 and 2, so [0]v I 2 At 1 A[O3] rate = %3D 3. (c) In this reaction 91 /口 因 OL pause break prt sc sysrq delete nsect %24 9. 7. P. H B. W N 1 ɔ3. Corev was synthesizing a chemical in the laboratory. He used different purification techniques to try to obtain a pure compound. The melting point of the pure compound is 65 degrees. When he tested his compound in the lab the melting point he obtained was 62-68 degrees. Is the product he synthesized pure? 4A company was low on copper metal and decided to use some chemical additives just this once to some copper wiring they were installing in a house. How will this impact the conductivity of the wiring?
- 5) The solubility of BaCO3 is 24 mg/L at room temperature. a. What is the molar solubility and the Ksp of barium carbonate? b. The carbonate ion can react with water as follows: CO3² (aq) + H₂O (1) HCO3 (aq) + OH- (aq) Kb = 2.1 x 10-4 Write the reaction out from part a, add the two reactions together, and calculate the new K of the combined reaction. C. Using your K from part b, find the solubility of BaCO3 when the reaction in part b is also considered. Did the solubility increase or decrease from part a? Explain using Le Chatelier's Principle.Which of the following are equivalent to 2,500 ppm Cu2+?MW: Cu (63.55) 2.5 ppb Cu2+ 2,500,000 ppb Cu 2.5 ppt Cu2+ 39.34 mM 0.03934 M 0.07868 N (in precipitation reaction) 0.07868 N (in redox into Cu+)Sodium carbonate is a reagent that may be used to standardize acids in the same way that you have used KHP in this experiment. In such a standardization it was found that a 0.498-g sample of sodium carbonate required 24.8 mLmL mL of a sulfuric acid solution to reach the end point for the reaction. Na2CO3(aq)+H2SO4(aq)→H2O(l)+CO2(g)+Na2SO4(aq)Na2CO3(aq)+H2SO4(aq)→H2O(l)+CO2(g)+Na2SO4(aq) What is the molarity of the H2SO4H2SO4?
- For lab 4, we combined baking soda with vinegar, according to the chemical equation NaHCO 3 + CH 3COOH ==== NaCH 3COO + CO 2 + H 2O Consider 3 experiments: (i) 2g baking soda + 5mL vinegar, (ii) 2g baking soda + 10mL vinegar and (iii) 2g baking soda + 20mL vinegar. The amount of CO 2 produced was highest for (iii) and lowest for (i). For these experiments, which of the following is true? Vinegar ran out first Baking soda ran out first They both ran out at the same time Neither ran outA sample (50 mL) of a bottled water was added to a 100 mL volumetric flask and then diluted to the mark. From this stock solution, 50 mL was taken, added to a 100 mL volumetric flask and diluted to the mark. Final concentration of the serial dilution: 587.7161ppm. 1. what is the concentration in the original bottle (ppm)Ca2+ in a drinking water sample was analyzed by the following reactions below: Ca2+(aq) + C2O42-(aq) → CaC2O4 (s) → CaO(s) + CO(g)+ CO2(g) First an excess of C2O42- was added to 0.10 L of the Ca2+ water sample. Then CaC2O4 was precipitated, which was demcomposed into CaO with filtering and some heat. The CaO was measured to be 5.61 mg. What is the concentration of Ca2+ in the original water sample? The MW of CaO is 56.1 g/mol. 0.0100M 0.0010 M 1.00 M 0.100 M The partition coefficient (K) of methylamine (CH3NH2) is 4.50, preferring the organic layer over the aqueous layer in this extraction. The Ka of methylammonium (CH3NH3+) is 2.00 x 10-11. If 10 mL aqueous methylamine solution at pH 11.0 is extracted with 20.0 mL organic solvent, what is the fraction of solute remaining in the water (q)? HINT: methylamine is a weak base. 14.3% 10.0% 18.2% 81.8%