# a certain reaction has the following generaln form

72,094 results, page 75

### impact of energy use

1. Fossil fuels are (1 point) • a natural resource. i pick this one • renewable. • made from minerals. •burned in hydroelectric plants. 2. Which of the following is a consequence of using fossil fuels as an energy source? (1 point) •decreased carbon dioxide levels...

### Metals

Transition metals (also called heavy metals) form insoluble compounds with hydroxide ions. Therefore, it is possible to extract heavy metal ions from water by raising the pH. The precipitation reaction between cadmium(II) and hydroxide is shown below. Cd2+(aq) + 2OH−(aq...

### Chemistry

Over the years, the thermite reaction (mixing of solid iron (III) oxide with aluminum metal) has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. A. Write a balanced equation representing the reaction. B. What masses of iron (...

### trig

evaluate the following in exact form, where the angeles alpha and beta satisfy the conditions: sin alpha=4/5 for pi/2 < alpha < pi tan beta=7/24 for pie < beta < 3pi/2 answer choices A. sin(beta+alpha) B. tan(beta-alpha) C. cos(alpha-beta)

### mat/156

If p stands for this meal is delicious and q stands for busy people do not eat, write each of the following in symbolic form. Use this information to answer parts a through c. (A)This meal is delicious. (B)busy people do not eat or this meal is not delicious

### chemistry

The reaction converting glycerol to glycerol-3-phosphate is energetically unfavorable by 9.2kJ. The reaction of ATP with water to yield ADP, hydrogen phosphate ion, and hydrogen ion is energetically favorable by 30.5kJ. These reactions are coupled so that the overall process ...

### Chemistry

Calculate the enthalpy change, ΔrH, for the following reaction, 4 NH3 (g) + 5 O2(g) → 4 NO (g) + 6 H2O (g) given the thermochemical equations below. N2 (g) + O2 (g) → 2 NO (g) ΔrH° = +181 kJ N2 (g) + 3 H2 (g) → 2 NH3 (g) ΔrH° = 91.8 ...

### Chemistry

Acetic acid is a polar molecule and can form hydrogen bonds with molecules. Therefore, it has a high soulubility in water. Yet acetic acid is also soluble in benzene (C6H6), a nonpolar solvent that lacks the ability to form hydrogen bonds. A solution of 3.8g of CH2COOH in 80 g...

### chemistry

N2 + O2 --> 2 NO change in heat (delta H)= 43.2 kcal based on the reaction, which statement is true? a) 43.2 kcal are consumed when 1.00g of O2 reacts b) 43.2 kcal are consumed when 1.00g of N2 reacts c) 43.2 kcal are consumed when 1.00g of NO is produced d) 43.2 kcal are ...

### Chemistry Eq. Question

3H2(g) + N2(g) reverse reaction arrow 2NH3(g) What factors would affect the equilibrium constant for the reaction above? (Select all that apply.) increasing the H2 concentration decreasing the NH3 concentration increasing the temperature decreasing the temperature increasing ...

### french

how do i do subjontive? how do i know that i am doing it right? the endingings : e,es,e,ions,iez,ent - do i use those for every verb i use? for -ir verbs, do i also add -iss, or is that onlyfor imparitive? merci! Thank you for using the Jiskha Homework Help Forum. It would ...

### CHEMISTRY

I need help with these problems ASAP: I need help setting these problems up: pleas!! (1)Calculate the volume of 1.87 M NaI that would be needed to precipitate all of the Hg+2 ion from 199 mL of a 1.96 M Hg(NO3)2. The equation for the reaction is 2NaI (aq) + Hg(NO3)2 (aq) ---&...

### Chemistry

Refer to the net ionic equation below to answer the following questions: Co(H2O)6^+2 + 4Cl- <==> CoCl^-2 + 6H2O 1. In what direction was the equilibrium shifted by: a. Addition of HCl b. Addition of water c. Addition of AgNO3 d. Increasing the temperature e. Decreasing ...

### math help & correction

Problem #1 Is this correct or wrong? Find the slope of the line passing through the points(-1, -1)and(-1, 2). Write the equation of the line. For this one I KEEP GETTING Y= - (3)/(2)x-2.5 Problem #2 Find the y-intecept and slope of 7x+9y=72 My answer: Slope is: - (9)/(8) y-...

### chemisty

I was told to post at the beginning of the page: not sure if I did so or how to really do it but i'm posting the question again): Diiodine pentafluoride reacts spectacularly with bromine trifluoride to form iodine pentafluoride, oxygen gas, and liquid bromine. In a particular ...

### Chemistry

When 0.655 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 107C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant figures. Do not ...

### English

1. Read the following lines from "Thoughts of Hanoi." Brother, How is all that now? Or is it obsolete? Are you like me, Reliving the past, Imagining the future? Do you count me as a friend or am I the enemy in your eyes? Brother, I am afraid That one day I'll be with the March...

### Temperature

Q: A reaction rate has a constant of 1.23 x 10-4/s at 28 degrees C and 0.235 at 79 degrees C. Determine the activation barrier for the reaction. A: My work thus far: ln(1.23 x 10-4/0.235)=(Ea/8.314)(1/79-1/28) -7.551=(Ea/8.314)(0.01265-0.03571) -7.551=(Ea/8.314)(-0.02305) 327....

### MANAGEMENT ACCOUNTING

COSTS CAN BE CLASSIFIED INTO TWO CATEGORIES FIXED AND VARIABLE COSTS THESE COST BEHAVE DIFFERENTLY BASED ON THE LEVEL OF VOLUME SUPPOSE WE ARE RUNNING A RESTAURANT AND HAVE IDENTIFIED CERTAIN COST ALONG WITH THE NUMBER OF ANNUAL UNIT SOLD OF 1000 TOTAL COST OF RAW MATERIAL ...

### chemistry

Ammonia reacts with oxygen in the presence of a platinum catalyst to give nitric oxide and water, according to the following gas phase equilibrium: 4NH_3(g) + 5O_2(g) <---> 4NO(g) + 6H_2O(g) ÄH = −906 kJ mol^−1 What is an appropriate equilibrium expression ...

### Chemistry

1. Cisplatin is an anti tumor agent. It has the molecular formula Pt(NH3)2Cl2. How many grams of cisplatin can be produced if the limiting reactant is 1 kg of platinum? I got 1538.1 g Pt(NH3)2Cl2. 2. Hydrogen cyanide is used in the production of cyanimid fertilizers. It is ...

### chemistry 20 MC questions

1- The equipment needed to carry out a titration is: A) hot plate, pipet, and filter paper B) heat source, test tube, and filter paper C) heat source, pipet, and burette D) erlenmeyer flask, pipet, and burette 2- A student correctly predicted that 10.0 g of a precipitate would...

### Math

Chris withdraws $7.50 per week from his savings account. After 15 weeks, the balance in the account is $585. A. Write an equation in point -slope form to model this. B. Write the equation in slope-intercept form. C. How much is in the account after 1 year (52 weeks)? ;Details ...

### Algebra 2

Hey I am working on math homework that involves "Standard Form to Vertex Form by Averaging." My class is just starting to learn this today, but I am totally lost still on what to do. Can you please help? The formula for this is y=a(x - h)^2 + k the h is the x-value vertex and ...

### Chemistry

Predict the effect of each of the following on the indicated equilibrium system in terms of which reaction will be favored (forward, reverse, or neither) H2(g)+Cl2(g)<=>2HCl(g) +184 kJ A)addition of Cl2 B)removal of HCl C)increased pressure D)decreased temperature E)...

### Help in Chemistry!!

You are given an aqueous solution of hydrofluoric acid. (Recall that hydrofluoric acid is a weak acid; When you are given an aqueous solution of a weak acid you always assume that the dissociation reaction of the acid in water has reached equilibrium) Predict whether the ...

### Chemistry help please!

For each product of the following unbalanced equations which reactant is limiting, and calculate the mass of each product that is expected. 1) 2Al + 6HCL --> 2AlCl2 + 3H2 15.0gAl * 1moleAl/26.981gAl * 2moleAlCl3/2moleAl * 133.34gAlCl3/1moleAlCl3= 74.1gAlCl3 15.0gHCL * ...

### Math

Part 1: Answer the following question: In a survey of students about favorite sports, the results include 22 who like tennis, 25 who like football, 9 who like tennis and football, 17 who like tennis and baseball, 20 who like football and baseball, 6 who like all three sports, ...

### Algebra

Part 1: Answer the following question: In a survey of students about favorite sports, the results include 22 who like tennis, 25 who like football, 9 who like tennis and football, 17 who like tennis and baseball, 20 who like football and baseball, 6 who like all three sports, ...

### English

Complete the sentence by writing the correct form of the word in parentheses. You may not need to change the form that is given. 1. She made her fortune in the ____ market before she became a full-time philanthropist. (security) Would the correct answer be "securities"? This ...

### Hard Math :(

2. What answer represents this number in scientific notation? 0.00000916 a. 916 x 10^-8 b. 9.16 x 10^-6 c. 916 x 10^8 d. 9.16 x 10^6 3. What is this number in standard form? 6.8 x 10^-4 a. 5,750,000,000 b. 575,000,000,000 c. 0.00000000575 d. 0.575000000000 5. What is this ...

### chemistry

Nitrogen gas, N2, is usually a very inert gas and thus, is often employed in dry boxes. However, it would be a poor choice for use in a dry cell with which of the following substances? A) uranium metal B) Cu/Sn alloys C) Li metals D) Ca metals E) none of these can anyone help ...

### Physics

Hello everyone I know that when a force is applied it has to exert a force opossite But this really is not in my head can someone please give me an evidence or even a diagram showing how can we exert an opposite force if we are walking forwards Thanks alot When we are walking ...

### algebra

how long will it take for the population of a certain country to double if its annual growth rate is 7.9%?( round to the nearest year)

### CRIMINOLOGY

in 1993, the life expectancy of males in a certain country was 68.6 yrs. in 1997, it was 71.0 . the linear function that fits the data is what

### Precalc

What name is given to figures (wave) to indicate that points are attracted to only certain regions in the plane and no to others?

### chem

the root mean square speed of a certain gaseous oxide is 493 m/s at 20 C. what is the molecular formula of the compound. how is the answer NO???

### Chemistry

A certain substance has a heat of vaporation 56.21 kj/mol. At what kelvin temperature will the vapor pressure be 6.50 times higher than it was at 361k? Thank you

### Chemistry

A certain substance has a heat of vaporation 56.21 kj/mol. At what kelvin temperature will the vapor pressure be 6.50 times higher than it was at 361k? Thank you

### Chemistry

A certain substance has a heat of vaporation 56.21 kj/mol. At what kelvin temperature will the vapor pressure be 6.50 times higher than it was at 361k? Thank you

### Chemistry

A certain substance has a heat of vaporization of 34.65 kj/mol. At what kelvin temperature will the vapor pressure be 3.50 times higher than it was at 331 k?

### chemistry

invent a term to describe a certain number of something you use that isn't already being used. Define and explain

### Science

The ripples in a certain groove 12.7 cm from the center of a 33-rpm phonograph record have a wavelength of 1.75 mm. What will be the frequency of the sound emitted?

### calculus

The base of a certain solid is the triangle with vertices at (-14,7), (7,7), and the origin. Cross-sections perpendicular to the y-axis are squares. What is the volume?

### biology

Certain spider toxins work by inhibiting Ca2+ channels. Briefly explain how this works and what happens to the person.

### Chemistry

A certain substance has a heat of vaporization of 26.49 kJ/mol. At what Kelvin temperature will the vapor pressure be 5.00 times higher than it was at 285 K?

### Physics

A certain radioactive element has a half liv of 20days, how long does it take 3/2 of the atom originally present to disintegrate

### math

in a certain distribution the mean is 68, with a variance of 16. Using chebyshev's theorem at least what percentage of values will fall between 60 and 76

### Chemistry

A student measures k for a certain blue due to be 19.4 m^-1 at 560 nm. What is the molarity of the dye in a solution with an absorbance of .118 at this wavelength ?

### Math

Eugene lives in the desert in Arizona. What is the likelihood he will need an umbrella today? A. certain B. likely C. unlikely D. impossible

### math

In a certain right triangle, the lengths of the legs have a sum of 50 and a product of 282. What is the length of the hypothenuse? A. 44 B. 42 C. 40 D. 25squareroot2

### physics

A certain bacterium swims with a constant speed of 4.61 µm/s. How long will it take to swim across a petri dish that has a diameter of 8.69 cm?

### physics

In a certain right triangle, the two sides that are perpendicular to each other are 7.00 m and 8.30 m long. What is the tangent of the angle for which 7.00 m is the opposite side?

### Graphing Quadratics

For the graph of a certain quadratic y = ax^2 + bx + c, the vertex of the parabola is (3,7) and one of the x-intercepts is (-2,0). What is the x-coordinate of the other x-intercept? Thank you for helping me :D

### Physics

For a certain projectile, the horizontol range is twice in magnitude of the maximum height attained by it. Find its angle of projection.

### math

a certain sum of money amounts to rs8820 in 2yrs and to rs9261 in 3yrs at compd interest.find rate%

### hhs

Instructions:Drag the tiles to the boxes to form correct pairs. Not all tiles will be used. Match each set of vertices with the type of quadrilateral they form. Tiles A(2, 0), B(3, 2), C(6, 3), D(5, 1) a parallelogram with nonperpendicular adjacent sides A(3, 3), B(3, 6), C(7...

### History!!

PLEASE PLEASE PLEASE HELP ME!! <3 1. Which of the following describes the role of an anthropologist? (1 point) a person who studies the origin and development of humans*** a person who searches for artifacts from prehistoric people a person who excavates remains from early ...

### Chemistry

Experiment 1: A has .20 M, B has .20 M and the initial rate is 2.0*10^-4M/min Experiment 2: A has .20 M, B has .40 M, and the initial rate is 8.0*10^-4M/min Experiment 3: A has .40 M, B has .40 M, and the initial rate is 1.6*10^-3M/min Using the data above, answer the ...

### Chemistry/lab math

For an AST determination, 0.2 mL of serum was used. The change in absorbance (ΔA) was measured at 340 nm with a 3 mL reaction mixture. The initial reading was 0.54 A, the reading after 5 minutes was 0.32 A. Report the AST value in IU. Equation to use when time is other ...

### Chemistry...Please Help

The Chemicals are: Baking Soda- NaHC03 Calcium Chloride- CaCl2 Bromothymol Blue - (acid base indicator) _______________________________________ What is: (a) The equations for the dissolution of calcium chloride and sodium bicarbonate in water (b) Look up the heats of solutions...

### 3D Shapes & Scale

Write an explanation of ONE of the following question: (your explanation should be in paragraph form and should be written for a reader who is completely unfamiliar with area/volume scale factors and the square-cube law) 1) Why can aquatic animals grow so much larger than land...

### chemistry

Can somebody point out the step i have to take to solve this problem. It would be much appreciated. Thanks a lot!!!! _____________________________________________________________________________________________________________________ Asprin, C9H8O4, is prepared by reacting ...

### math plz help my last chance to do this homework

a) write an expression in simplest form for the perimeter of each triangle. b)write another expression in simplest form that shows the difference between the perimeter of the larger triangle and the perimeter of the smaller triangle.

### Precalculus

"Sketch the ellipse. Find the coordinates of its vertices and foci. 34. x^2 + 25y^2 - 6x - 100y + 84 = 0 (Hint: Complete the squares in x and y. Begin by writing the equation in this form: (x^2 - 6x + ___) + 25(y^2 - 4y + ___) = -84.)" ==> I used the hint that came with the...

### Chemistry LAB 2

Calculate the Molar Enthalpy of Neutralization in kJ/mol of the reaction between a monoprotic acid and a monoprotic base, given the following information: *Make sure you report your answer using the correct sign* The temperature change equals 9.80 degrees C, 50.0mL of 1.00 M ...

### Limiting Reactant (Chemistry)

What is the limiting reactant for the following reaction if there are 3.4 moles of Ca(NO2)2 and 2.4 moles of Li3PO4? 3Ca(NO2)2 + 2Li3PO4 --> 6LiNO2 + Ca3(PO4)2 A)Ca(NO2)2 B) Li3PO4 C) LiNO2 D) Ca3(PO4)2

### ctu

Stuart’s car loan reached a maturity value of $14001.00 after 3 years. Find the rate on Stuart’s loan if the principal he borrowed was $12474.00 Use the formula to find the interest; then use to find the rate in decimal form. Leave your answer in percentage form rounded to...

### Chemistry (please help me!)

H2(g) + CO2(g)<-> H20(g) + CO(g) When H2(g) is mixed with CO2(g) at 2,000K, equilibrium is achieved according to the equation above. In one experiment, the following equilibrium concentrations were measured: [H2]=0.20 M [CO2]=0.30 M [H2O]=[CO]=0.55M a) What is the mole ...

### The elements and Principles of Design

CAN SOMEONE PLEASE CHECK MY ANSWERS. (MY ANSWERS ARE AT THE BOTTOM...) 1. Which one of the following factors is one of the principles of design? A. Form C. Pattern B. Color D. Balance 2. Of the following expressions, which best describes the concept of harmony in a room’s ...

### Math

Okay, so for the following question I was able to answer half of the parts. I can't figure out how to do B & D.. Newborn blue whales are approximately 24 feet long and weigh 3 tons. Young whales are nursed for 7 months, and by the time of weaning they often are 54 feet long ...

### English

Could you please help me express the following concept? I included two other sentences. 1) I need to start an e-mail saying that I'm extremely sorry for writing so late. (because I've been busy checking with students' tests). 2) Many animals risk dying out/are on the verge of ...

### Physics

A motorist traveling at 15m/s encounters a deer in the road 38m ahead. If the maximum acceleration the vehicle's brakes are capable of is -7m/s/s, what is the maximum reaction time of the motorist that will allow him or her to avoid hitting the deer? Answer in units of s. I ...

### Math

5. Which of the following statements is NOT true regarding an expression written in scientific notation in the form of a x 10^n ? A.)The value of "A" must be greater than or equal to 1 and smaller than 10. B.)The value of "N" must be an integer. C.)Doubling "N" results in a ...

### Math help

Which of the following statements is NOT true regarding an expression written in scientific notation in the form of a x 10n ? A.)The value of a must be greater than or equal to 1 and smaller than 10. B.)The value of n must be an integer. C.)Doubling n results in a doubling of ...

### English

Can you please let me know if the following exercises are correct? In particular, can you help me formulate the questions more clearly? 1)Write the following dates in letter form. (Example: May 5th 1984 ...) 2) Write down questions for the underlined information. (or to the ...

### chemistry

What is the hydrocarbon that will not form an additional polymer A compound which is not a hydrocarbon but will form an additional polymer

### geometry

State whether the following numbers make a right triangle and a Pythagorean triple: 2, 2 root 2, and 2 root 3 I am pretty sure that both answers are no, because 2 squared and 2 root 2 squared equal 8, whereas 2 root 3 squared equals 6, so it cannot form a right triangle or ...

### Chemistry

Help please, What is the minimum mass of NH4HS that must be added to the 5.00-L flask when charged with the 0.350g of pure H2s(g), at 25 ∘C to achieve equilibrium? Ammonium bisulfide, NH4HS, forms ammonia, NH3, and hydrogen sulfide, H2S, through the reaction NH4HS(s)&#...

### Chemistry

The ionization constant Ka of an indicator HIn is 1.0x10^-6. The color of the nonionized form is red and that of the ionized form is yellow. What is the color of this indicator in a solution whose pH is 4.00? (The question mentions that you can use the ratio of HIn/In). I NEED...

### math

2. What answer represents this number in scientific notation? 0.00000916 a. 916 x 10^-8 b. 9.16 x 10^-6 c. 916 x 10^8 d. 9.16 x 10^6 3. What is this number in standard form? 6.8 x 10^-4 a. 5,750,000,000 b. 575,000,000,000 c. 0.00000000575 d. 0.575000000000 5. What is this ...

### math

2. What answer represents this number in scientific notation? 0.00000916 a. 916 x 10^-8 b. 9.16 x 10^-6 c. 916 x 10^8 d. 9.16 x 10^6 3. What is this number in standard form? 6.8 x 10^-4 a. 5,750,000,000 b. 575,000,000,000 c. 0.00000000575 d. 0.575000000000 5. What is this ...

### organic chemistry

Which of the following minor products could not arise from the halogenation reaction below? isobutane + Br2 ----> 1-bromo-2-methyl propane + HBr + minor products a)2,5 dimethylhexane b)2 bromo-2 methyl propane c)1,3 dibromo, 2 methyl propane d) 2,4 dimethylhexane e)2,2,5 ...

### college

Which of the following would NOT be considered discrimination? 1. Sue believes poor people are criminals. 2. Sue refuses to give Jane a ride to work because Jane is poor. 3. Jane, who is poor, vandalizes the cars of rich people who she believes are snobs. 4. Sue refuses to ...

### Chemistry

The reaction Co(H2O)6^+2 + 4Cl- <==> CoCl^-2 + 6H2O is at equilibrium. The right side is pink and the left side is blue. 1. What would happen if you added AgNO3? Would nothing happen? Or would the Ag+ react with the Cl- and shift the reaction left? 2. What would happen ...

### Chemistry

The reaction Co(H2O)6^+2 + 4Cl- <==> CoCl^-2 + 6H2O is at equilibrium. The left side is pink and the right side is blue. 1. What would happen if you added AgNO3? Would nothing happen? Or would the Ag+ react with the Cl- and shift the reaction left? 2. What would happen ...

### algebra.

problems about angles: Hi. I needed help on some problems for the math section that we are doing in class. I am trying out some problems in my math book, but they prove quite difficult. 1. In a certain parallelogram, if the measure of one angle is 30 degrees more than the ...

### Chem, Oxidation

Complete and balance the following half-reactions. In each case indicate whether the half-reaction is an oxidation or reduction. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.) OH ‾(aq) ¨ O2(g) I got 2OH^-(aq)--&...

### chemistry

2.9 The standard enthalpy of formation of the metallocene bis(benzene)chromium was measured in a calorimeter. It was found for the reaction Cr(C6H6)2(s) → Cr(s) + 2 C6H6(g) that . Find the corresponding reaction enthalpy and estimate the standard enthalpy of formation of...

### Calculus

Write the polar equation in rectangular form. r = 12 sin theta Write the rectangular equation (x + 7)^2 + y^2 = 49 in polar form

### Science

1. Under which of the following conditions would a fossil most likely form? A. A living thing dies and sediment is very slowly deposited on top of its body. B. A living thing dies and sediment quickly covers its body. C. A living thing dies and its skeleton is left exposed to ...

### Chemistry

The formaldehyde content of a pesticide preparation was determined by weighing 0.3124g of the liquid sample into a flask containing 50.0mL of 0.0996M NaOH and 50mL of 3% H2O2. Upon heating, the following reaction took place: OH- + HCHO + H2O2 -> HCOO- + 2H2O After cooling, ...

### chem

Kw = KaKb. With this equation you can convert any Ka to Kb and the reverse. Codeine (Cod), a powerful and addictive painkiller, is a weak base. a) Write a reaction to show its basic nature in water. Represent the codeine molecule with Cod. b) The Ka for its conjugate acid is 1...

### Chemistry

A 28.4288 g sample of impure magnesium car- bonate was heated to complete decomposition according to the equation MgCO3(s) ! MgO(s) + CO2(g) . After the reaction was complete, the solid residue (consisting of MgO and the original impurities) had a mass of 16.0467 g. Assum- ing...

### Chemistry

Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. How many grams of magnesium would we have to start with to prepare 15.0 ...

### math

Can someone please help me with the following problems Determine if the triple numbers are can be sides of a right triangle? sqrt(10)sqrt(13)sqrt(23) The length of thy hypotenuse of a right triangle equals the length of one of legs of the triangle A) always true B) sometimes ...

### science

humidity is the amount of water vapor in the air at a given time. at warm temperatures, air can hold more moisture than it can at cold temperatures. Relative humidity is the amount of vapor the air is holding expressed as a percentage of the amount the air is capable of ...

### Chemistry

One proposed design for a Mars rover uses a methane gas fuel cell as its power supply. The methane fuel can be made on Mars using a chemical reaction that has been known for over 100-a the Sabatier methanation reaction: C02(g) + 4H2(g)<--> CH4(g) +2H2O(g) Enthalpy change...

### Chemistry. Percent mass...

A 1.009 g mixture of the solid salts Na2SO4 (molar mass= 142.04) an Pb(No3)2 (molar mass= 331.20) form an aqueous solution with the precipitation of PbSO4 (molar mass= 303.26). The precipitate was filtered and dried and its was was found to be .471 g. The limiting reagent is ...