what minimum mass of cobalt (ii) nitrate must be added

Q: A chemist measures the amount of chlorine gas produced during an experiment. She finds that 1.35 g o...

A: Calculating number of moles:

Q: What is the mass of 4.50 x 10- Cu atoms? Multiple Choice 7.47 x 10 amu 7.47 x 10 g 4.75 g 63.55 amu

A: Calculation of mass of cu atom:

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 6....

A:

Q: A bicyclist is stopped at the entrance to a valley, as sketched below: E A D B Where would the bicyc...

A: Answer: This question is based on the conservation of energy according to which total energy ( which...

Q: ACT 3 Colligative Properties of Nonelectrolyte Solutions Review Questions 12.39 What are colligative...

A: Vapour pressure -  The  pressure exerted by the vapour in the equilibrium with liquid is called as v...

Q: PROBLEM 4: Calculate the pH of the following: a. 0.420 M in sodium formate and 0.200 M in formic aci...

A:

Q: 3. How many moles of NaOH would it take to neutralize 1 mol of HCI? How many moles of NaOH would it ...

A: The reaction between acid and base is known as neutralization reaction. The reaction of acid and bas...

Q: 12.61 The molar mass of benzoic acid (C,H,COOH) determined by measuring the freezing-point depressio...

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Q: What is the ph of 0.6M acetic acid?

A:

Q: Chemistry Question

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Q: A chemist determines by measurements that 0.035 moles of hydrogen gas participate in a chemical reac...

A: Given,  Moles of hydrogen gas participate = 0.035 mol.  The mass of hydrogen gas participate is:

Q: エ エ エ エ エ エ

A:

Q: For the ion given below: NO2- 1. Draw the Lewis Dot structure for the ion on a paper and write the...

A: Lewis structures of NO2-.

Q: please help I do not understand this question

A: To find the pH of a 2.30 M solution of HNO₂ (Ka = 4.5 x 10-4)

Q: What is the role of cation during ion-dipole interactions? A.  it distorts the electron distributio...

A: Ion dipole interaction: It is defined as the interaction between ion and a molecule with permanent d...

Q: Calculate the standard enthalpy change for the reaction 2C8H18() + 1702(g) -16CO(g) + 18H20(). Given...

A:

Q: Which of the following processes is exothermic, given the following: N2(g) + 2 02(g) N204(1) AH°=9.6...

A: We know for exothermic reaction standard enthalpy of the reaction must be negative. So we will see f...

Q: What element forms an ion with an electronic configuration of [Xe] and a −2 charge?

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Q: Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are ...

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Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 3....

A: The mass of water in the water bath is = 3.30 kg The initial temperature of the water bath is = 31.8...

Q: What is the pOH of a solution that has a pH of 9.9?

A: Here we have pH = 9.9 We have to find pOH .

Q: 2NO2(g) → 2NO(g) + 02(g) It follows this reaction mechanism: NO,+NO 2NO+O2 2NO2 Progress of reaction...

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Q: Pentaborane B5H9(s) burns vigorously in O2 to give B203(s) and H20(1). Calculate AHpxn for the combu...

A:   Heat of reaction: at particular temperature  the amount of heat released or absorbed during a che...

Q: Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaOH) to produce aqueous sodi...

A:

Q: reaction was monitored as a function of time: AB→A+B A plot of 1/[AB] versus time yields a straigh...

A: AB-->A + B  Slope = 0.052 mol.L^-1.s^-1 Initial concentration = 0.52 mol.L^-1  Final concentratio...

Q: Be sure to answer all parts.   Draw the products of the reaction of cyclopentanone with ethylidenetr...

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Q: Be sure to answer all parts. Industrially, vanadium metal, which is used in steel alloys, can be obt...

A: First, calculate the moles for both reactants and then use the mol to mol ratio to find out the mole...

Q: ONLY use the ICE table to solve! A student  prepares a 1.9 mM  aquous solution of 4-chlorobutanoi a...

A: Given,  [C3H6ClCOOH] in mM = 1.9 mM  Calculate the fraction of 4-chlorobutanoic acid that is in the ...

Q: Determine the viscosity of diethyl ether at 77 degrees Celsius.  (Pa·s)

A: 1. From Dortmund data bank of diethyl ether, The viscosity of diethyl ether at 77°c = 350.15k is 0.1...

Q: Estimate the boiling temperature at atmospheric pressure 1 atm for water using Van der Waals paramet...

A: Detail mathematical calculation for boiling temperature is given below

Q: 5. Calculate the vapor pressure of water above a solution prepared by adding 22.5 g of lactose (C12H...

A:

Q: When 0.7521 g of benzoic acid was burned in a calorimeter containing 1,000. g of water, a temperatur...

A: Mass of benzoic acid burned is = 0.7521 g The heat of combustion of benzoic acid s= -26.42 kJ/g

Q: Which of the following is NOT true about equivalence point and endpoint? O a. The endpoint approxima...

A: Titration is a method to determine the concentration of an unknown solution by using the solution of...

Q: Directions: Consider the given graphs below. Mix and match the graphs with the correct descriptions....

A: Zero order reaction is defined as the reaction in which rate of reaction is independent of concentra...

Q: A chemist determines by measurements that 0.035 moles of iodine solid participate in a chemical reac...

A: Given moles = 0.035 mol

Q: Which of the following reagents would best distinguish Cu(OAc)2 and Zn(OAc)2? O a. KSCN O b. K4[Fe(C...

A:

Q: Be sure to answer all parts. The AG for the reaction H,(g) + I(g) = 2HI(g) is 2.60 kJ/mol at 25°C. I...

A: H2(g) + I2(g) --> 2HI(g) ∆G° = 2.60 kJ/mole = 2600J/mole pH2= 3.97 atm pI2= 0.029 atm pHI = 0.53a...

Q: 4. What weight (in grams) of lactose (C12H22011 , MW= 342 g/mole) is required to prepare each of the...

A: Note: As per company policy we are supposed to attempt first three subparts only. Please repost othe...

Q: Precipitation gravimetry : In precipitation gravimetry , the analyte is converted to a sparingly sol...

A: The statement is True In the precipitation gravimetry the analyte is transformed into the moderately...

Q: Enter your answer in the provided box. Calculate the standard entropy change for the following react...

A:

Q: Given that pKa = 4.72 at 25 °C for HN3, what is the pH of 0.125 mol L-1 NaN3(aq) at 25 °C? What is t...

A: A question based on equilibrium concept that is to be accomplished.

Q: 12.49.Explain why it is essential that fl uids used in intravenous injections have approximately the...

A: Answer of 12.49 is given below

Q: Describe the effects of cooling an exothermic reaction at equilibrium.

A: Given it's a exothermic reaction. 

Q: You are given a 50 ml solution of NADH having an A340nm Of 0.31. What is the concentration of this s...

A: Absorbance =ε c t ε = Molar absorption coefficient (mol-1L cm-1) c = Concentration (mol/L)t = Thickn...

Q: As ammonia nh3 is added to a test tube containing saturated solution of NiCO3 the light green solid ...

A: Given that, ammonia NH3 is added to a test tube containing saturated solution of NiCO3. NiCO3 is lig...

Q: Redraw the compound given, determine which are the chiral centers and identify them all.

A: Given : structure of molecule

Q: A cheeseburger from a fast food restaurant contains 19 g of fat, 20go carbohydrate, and 28 g of prot...

A: Answer:- We can determined the energy of cheegburger by find the energy of protein,fat and carbohydr...

Q: PHOTOSYNTHETIC PIGMENTS 1.6 0.7 1.4 0.6 1.2E Soret 0.5 HA 0.4 0.8 COOCH 0.3 0.6 phytyl bacteriochlor...

A: Higher the wavelength shorter will be the energy gap between the two energy levels  

Q: 1) following transformation. Choose the most suitable reactant(s), product(s), or reagent(s) for the...

A:

Q: Calculate the molar mass of a compound if 0.348 mole of it has a mass of 200.0 g. g'mol

A:

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.