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is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase

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Calc
The temperature at any point in the plane is given by the function T(x,y)= 100/(x^2+y^2+1). Find the direction at the point (3,2) in which the temperature does not increase or decrease. Help, please? Thanks!

math
One day, the temperature outside increased by 6/10 every hour for seven hours. How much did the temperature increase that day?

Chemistry
A sample of 0.0020 mole of HCl is sissolved in water t omake a 2000ml solution. Calculate the molarity of the HCl solution, the (H30+) and the pH. For a strong acide such as HCl the (h30+) is the same as the molarity of the HCl solution. HCl +H20 Balanced equation H30+ +Cl

math problem
please help me solve The oven temperature will increase by 45 degrees Fahrenheit per minute. When the oven is initially turned on, the temperature is 70 degrees Fahrenheit. What will the temperature of the oven be after 7 minutes? Write an expression and explain how you ...

chem
What is the final temperature (degrees celcius) of 1.36g of water with an initial temperature of 23.0degrees celcius after 6.420J of heat is added to it?

chemistry
An ice cube weighing 22.7 g at a temperature of 0.0°C is added to 125 mL of water at 27.1°C in an insulated container. What will be the final temperature after the ice has melted?

Chemistry
A solution is prepared by dissolving 25.0 g of pure HC2H3O2 and 25.0 g of NaC2H3O2 in 700 mL of solution (the final volume). (a) What is the pH of the solution? (b) What would the pH of the solution be if 65.0 mL of 0.650 M NaOH were added? (c) What would the pH be if 40.0 mL ...

physics
If 1200 cal of heat are added to 50 g of water initially at a temperature of 15 oC, what is the final temperature of the water?

Finance
What is the present value of the following payments? The interest rate is 8.5%. $200 $200 $200 $200 $200+$1,000 I--------I-------I-------I-------I-------I 0 1 2 3 4 5

pre calculous
solve each equation algebraically and check it by substituing into the orignall equation. 50e^0.035x=200 3LN(x-3)+4=5 Method of your choice by solving. logx^2=6 Logx^4=2 2x-2^-x/2=4 e^x+e^-x/2=4 500/1+25e^.3x=200

Chemistry
Predict how the entropy of the substance is affected in the following processes: a) O2 (g,200 kPa, 300k) --> O2 (g, 100, 300k) b)Br2 (l, 1 bar, 25 degree C) --> Br2 (g, 1 bar, 25 degree C) C)Fe (s, 1 bar, 250 degree C)--> Fe(s, 1 bar, 25 degree C) will entropy either ...

math
In 1980 in Montana the temperature rose from -32 degree's f to 50 degree's f in 12 hours. How much did the temperature increase?

math
In 1980 in Montana the temperature rose from -32 degree's f to 15 degree's f in 12 hours. How much did the temperature increase?

math
In 1980 in Montana the temperature rose from -32 degree's f to 15 degree's f in 12 hours. How much did the temperature increase? is it -47 or +47?

mathematics1
what will the total increase in temperature be after 7 minutes? after 4minutes the temperature has increased by 24 degrees.

IFSM 300
The sales department tells management that they can increase revenue by 20 percent by increasing sales 20 percent, but the production department says that to achieve that number of units, they will have to buy a new piece of equipment that will add $200,000 to the appropriate ...

chemistry
Calculate the final Celsius temperature of sulfur dioxide if 0.500 L of the gas at 35°C and 650 mmHg is heated until the pressure reaches 742 mmHg. Assume the volume remains 0.500 L.

algebra
The instruction manual on the industrial oven suggests your oven temperature will increase by 45 degrees Fahrenheit per minute. When the over is initially turned on, the temperature is 70 degrees Fahrenheit. What will the temperature of the oven be after 7 minutes? Write an ...

Algebra
The instruction manual on the industrial oven suggests your oven temperature will increase by 45 degrees Fahrenheit per minute. When the over is initially turned on, the temperature is 70 degrees Fahrenheit. What will the temperature of the oven be after 7 minutes? Write an ...

math116
The instruction manual on the industrial oven suggests your oven temperature will increase by 45 degrees Fahrenheit per minute. When the over is initially turned on, the temperature is 70 degrees Fahrenheit. What will the temperature of the oven be after 7 minutes? Write an ...

human physiology
Acetylcholine is known to increase the contractility of smooth muscle. And norepinephrine is known to decrease the contractility of smooth muscle. Oxytocin is a hormone that causes uterine contractions. Correct? I did an experiment with a lab rat. We removed the ovaries and ...

physics
A spherical steel ball bearing has a diameter of 2.540 cm at 23°C. (a) What is the diameter when its temperature is raised to 106°C? (b) What temperature change is required to increase its volume by 0.8%?

math help
The temperature at 1:00 pm on Tuesday was -13C. There was an increase of -6 per hour starting at 1:00 pm. Which of the following best represents the Celsius temperature n hours after 1:00 pm on Tuesday?

chemistry
In an adiabatic coffee cup, a 75mL of 1.0M HCl and 50mL of 1.0M HaOH were neutralize. The initial temperature is 22.1 C and the final temperature is 26.3 C. What is the enthalpy? S=4.18g/JC and the heat capacity of the adiabatic coffee

physics practical investigation
design and conduct an investion to find out whether the amount of heat(gas) produced will depend on an increase on the concentration of Hcl when Hcl reacts with an excess zn..guidance/hint...you may investigate either the amount of heat produced or the amount of gas produced(...

chemistry
The pKb values for the dibasic base B are pKb1 = 2.1 and pKb2 = 7.4. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.75 M B(aq) with 0.75 M HCl(aq). (b) after addition of 25.0 mL of HCl (c) after addition of 50.0 mL of HCl (d) after addition...

Org. Chem.
what is the precipitate formed when HCl is added? I believe the answer is NaCl, but I am not sure and this precipitate only formed in the first NaOH extract, as precipitate was essentially nonexistent in the 2nd extract? Below is what was done in the experiment. Also, does the...

Math Help
The population of town A increases from 1,346 to 1,500. In the same period, the population of town B increases from 1,546 to 1,800. a. Find the percent of increase in population for town A and for town B. b. Which town had the greater percent of increase? My answer town A. 1,...

Chemistry
A 250 g sample of water with an initial temperature of 98.8 c loses 7,500 joules of heat. What is the final temperature of the water ?

chemistry
Please help. Concentrated hydrochloric acid is a 38% w/w solution of HCL in water and has a density of 1.18g/ml. How many millilitres of concentrated hydrochloric acid are needed to prepare 500ml of a 1:200 w/v HCL solution? My answer is 2.12ml. I'm not sure if its correct. ...

science
Please help. Concentrated hydrochloric acid is a 38% w/w solution of HCL in water and has a density of 1.18g/ml. How many millilitres of concentrated hydrochloric acid are needed to prepare 500ml of a 1:200 w/v HCL solution? My answer is 2.12ml. I'm not sure if its correct. ...

Physics 11
SPH3U1 Two blocks of mass 500.0 g and 200.0 g are suspended vertically as shown in the diagram. The top string is lifted vertically upwards with a force of 8.48N on the 500.0 g Block (sorry no diagram) Thank you very much for your help

chemistry
What is the final concentration when 25ml of 0.500 m hcl is diluted to 500ml

chemistry
How much L and concentration of NaOH do i need to neutralize 500 L 22% HCL?

Chemistry
If the initial volume is 500. ml at a temperature of 30 C, at a constant pressure, what would the new volume be if the temperature was changed to 50 C?

Chem
2. Suppose a chemistry student made 2000. mL of 6.00 M HCl. He accidently spilled half of this solution on the floor. What is the Molarity of HCL left in the beaker? Explain the answer... - for this problem, would I use the eq'N, M1V1=M2V2. 3. What is the molarity of a sol'n ...

college
to how much water should 50.0 ml of 12.0 M HCl acid to be added to produce a 4.00 M solution?

biochemistry
Calculate the pH change of 10mL of HCl added to 1M phosphate buffer in 1L with initil pH of 7.2?

Chem
What is the pH of the solution formed when 0.040mol NaOH(s) is added to 2.00L of 0.020M HCl?

Chem
What is the pH of the solution formed when 0.040mol NaOH(s) is added to 2.00L of 0.020M HCl?

Chemistry
Write the balance equation and the reaction type when magnesium is added to HCl

Chemistry Titration Lab
Calculate the theoretical pH after 2.50 mL and 9.50 mL of NaOH has been added in both the titration of HCl and of HC2H3O2. Given: Molarity of all chemicals are 0.1 M HCl and HC2H3O2 are 8ml prepared in 100ml water. Im guessing I need to make and ICE chart but I'm having ...

Chemistry
Calculate the change in PH when 6 ml of 0.1 M HCl is added to 100 ml of a buffer solution that is 0.1 M in NH3 and 0.1 M in NH4Cl. And calculate the change in PH when 6 ml of 0.1 M NaOH is added to the original buffer solution.

Chemistry
Calculate the change in PH when 6 ml of 0.1 M HCl is added to 100 ml of a buffer solution that is 0.1 M in NH3 and 0.1 M in NH4Cl. And calculate the change in PH when 6 ml of 0.1 M NaOH is added to the original buffer solution.

Chemistry
If all of the energy from a 60-watt bulb was put into 1 gram of water at room temperature for 2 seconds, how much would the temperature of the water increase?

Chemistry
If all of the energy from a 60-watt bulb was put into 1 gram of water at room temperature for 2 seconds, how much would the temperature of the water increase?

Oceanography
How much heat must be added to turn 3 grams of water at 100°C into a vapor and what will be the final temperature after this much heat is added

physics practical investigation
Plan,design and conduct an investion to find out whether the amount of heat(gas) produced will depend on an increase on the concentration of Hcl when Hcl reacts with an excess zn..guidance/hint...you may investigate either the amount of heat produced or the amount of gas ...

6th Grade Math
If a plane is going on a 500 mile trip, how many minutes will it take to get there for a speed of 400, 300, 200, and 100 mph? For 500 it wil obviously take 1 hour, but my brain is dead today and I can't figure out the other four.

physics
What change in temperature occurs in order to increase the volume of 16 L of ethyl alcohol to 17 L? a)56.8*C b)1450*C c)53.5*C d) 90*C I can't seem to get one of the answers. I used the equation (change in volume)=beta(initial volume)(change of time). 1 L=(3)(1.12x10^-4)(16 L...

Algebra 2
Use Cramer's rule to find the number of items the company must sell each week to break even. y= 20x + 200 y= 25x D= |20 -1|. -20 - (-25) . |25 -1| D= 5 Dx= |200 -1|. -200 - 0 . |0 -1| Dx= -200 Dy= |20 200|. 0 - 5000 . |25 0 | Dy= -5000 x= Dx/D x= -200/5 x= -40 y= Dy/D y= -5000...

chemistry
a student was asked to prepare 100.0 mL of 0.0200 M solution of HCL from 0.400 M solution of HCL. in order to do this he measured 5.0 mL of 0.400 M HCL with a graduated cylinder, transfered this amount to a 100 mL beaker, added 95 mL of deionized water measured with a ...

chemistry
The pH of saturated is found to be 13.12. A 15.0mL sample of saturated Sr(OH)2 is diluted to 250.0mL in a volumetric flask. A 15.0 mL sample of the diluted Sr(OH)2 is transferred to a beaker, and some water is added. The resulting solution requires 27.6mL of a HCl solution for...

Chemistry
Calcium carbonate reacts with HCl according to the following equation: 2HCl(aq)+CaCO3(s)→CaCl2(aq)+H2O(l)+CO2(g) How many moles of HCl are in 58 mL of 0.13 M HCl? What mass of calcium carbonate is needed for complete reaction with the HCl in (a)?

chem
you are trying to dissolve 5 grams of sugar in 1 L of water. The sugar will not dissolve fast enough. Explain how you can increase the rate of dissolving? do you increase temperature?

Chemistry
Cr(OH)3<-->Cr+3+3OH- 1. which direction will equilibrium change if CrCl3 is added, why? 2. which direction will equilibrium change if HCL is added, why?

Chemistry
I have liquid concentrated HCl (37%w/w) To prepare 100ml of 10g/L HCl as a solvent medium, is it acceptable to just weigh 1g of liquid conc HCl and dilute to 100ml with water? What volume of conc HCl should we use to make 100ml of 10g/L HCl?

Chemistry
if 3.00 g of iron metal are reacted in a calorimeter with a heat capacity of 500 J/ degrees Celsius, what would be the final temperature of the calorimeter if its initial temperature were 23.0 C?

Chemistry
if 3.00 g of iron metal are reacted in a calorimeter with a heat capacity of 500 J/ degrees Celsius, what would be the final temperature of the calorimeter if its initial temperature were 23.0 C?

Chemistry
At room temperature, 80.0 ml of 0.125 M AgNO3(aq) and 20.0 ml of 0.500 M Fe(NO3)2(aq) are mixed together, generating the following equilibrium system Ag+ (aq) + Fe2+(aq) Ag(s) + Fe3+(aq). At equilibrium, the concentration of Fe3+ is 0.00505 M. (a) (4 pts) Calculate the initial...

5th grade
what is the mode for the following numbers? 900,700,500,600,600,300,600,200,100,300,200. please! show me how to do this problem? than you!

chemistry
Assume that no heat is lost to the surroundings and calculate the enthalpy involved when 200. mL of .10 M potassium hydroxide and 200. mL of .10 M hydrochloric acid are mixed. Both solutions began at room temperature, 24.5 degrees celsius, and have densities very close to 1.00...

Chemistry
If the change in temperature of a sugar added solution of water increased its boiling point by 0.6C how many moles of sugar was added to the water?

Algebra
The instruction manual on the industrial oven suggests your oven temperature will increase by 45 degrees Fahrenheit per minute. When the oven is initially turned on, the temperature is 70 degrees Fahrenheit. What will the temperature of the oven be after 7 minutes? "Write an ...

Chemistry
If some NH4Cl is added to an aqeous solution of NH3: A. pH of solution will decrease B. PH will not change C. pH will increase D. NH4Cl cannot be added to NH3 E. The solution will not have pH I think the answer is B, because if NH4Cl is added to the solution of NH3, then ...

chemistry
Draw the tritration curve for the neutralization of a 100ml sample of 1M solution of HCl with a .6M solution of Naoh point 1: 2 ml NaOH edded point 2: 40 ml NoOH ADDED POINT 3: EQUIVALENCE POINT 4: 80 ML NaOH added

Accounting
If a company erroneously records a $500 deposit as $50 in its records, which of the following must occur when reconciling its bank statement? a. The company must increase the balance per its records by $500. b. The company must decrease the balance per its records by $500. c. ...

Chemistry
How much concentrated 12 M HCl is needed to prepare 200 ml of a 2.5 M solution?

Chemistry
A volume of 150mL of 0.35M HCl is to be prepared from 80% HCl stock solution. (Density of HCl = 1.191g/mL). Calculate the molarity of 80% HCl stock solution.

Accounting
a net loss of $50,000 in 2009 and net income of $250,000 in 2010. The increase in net income of $300,000 can be stated as 200% increase cannot be stated as a percentage can be stated as 0% can be stated as 100% increase

AP Chemsitry
A solution of an unknown monoprotic weak acid was titrated with 0.100 M NaOH. The equivalence point was reached when 37.48 ML of base had been added. From a second buret, exactly 18.74 of 0.100 M HCl were added to the titration solution. The pH was then measured with a pH ...

Chemistry
A solution is prepared by dissolving 50.0 g of pure HC2H3O2 and 20.0 g of NaC2H3O2 in 975 mL of solution (the final volume). what is the ph? What would the pH of the solution be if 50.0 mL of 0.900 M NaOH were added? What would the pH be if 30.0 mL of 0.30 M HCl were added to ...

Math>> Help!!
You complain that the hot tub our hotel suite is not enough. The hotel tells you that they will increase the temperature by 10% each hour. If the current temperature of the hot tub is 75 Fereneit Degrees, what will be the temperature of the hot tub after 3 hours, to the ...

Chemisty
How many milliliters of 5.50 M HCl must be diluted to make 350. mL of a 0.500 M solution?

chemistry
How many milliliters of 4.50 M HCl must be diluted to make 400. mL of a 0.500 M solution?

chemistry
How many milliliters of 5.50 M HCl must be diluted to make 350. mL of a 0.500 M solution?

chemistry
What volume of 0.900 M HCl is required to complete neutralize 50.0 ml of a 0.500 M Ba(OH)2 solution?

AP Chemistry
In the titration of 50.0 mL of 1.0 M CH3NH2 (kb=4.4 x 10^-4), with 0.50 M HCl, calculate the pH a) after 50.0 mL of 0.50 M has been added b) at the stoichiometric point.

chemistry
calculate the volume of 0.1M NaOH which must be added to 50 mL of 0.1M HCl to give a final solution of pH 6???

College Chemistry
How do i calculate the pH when 200ml of .200M HCl is added .4998M of sodium acetate?

College Chemistry
How do i calculate the pH when 200ml of .200M HCl is added .4998M of sodium acetate?

Chemistry
Approximately how much water should be added to 10.0 mL of 12.0 M HCl so that it has the same pH as .90 M acetic acid(Ka= 1.8 x 10^-5)?

science
How much water should be added to 55.0 mL of 0.201 M HCl to dilute the solution to 0.155 M?

chemistry
If tums is added to 20.0 mL of 0.400 M HCl solution, how many grams of CO2 gas are produced?

Chemistry
How does Le Chatelier's principle explain the result you obtained when you added HCL to a suspension of Ca(OH)2 in water?

Chemistry
100 ml of 0.01N HCl is added to 0.9L of distilled water. What would the final pH of the solution be?

AP chemistry
1). In a titration 20 mL of 0.100 M of HCl is added to 50.0 mL of 0.150 M of ammonia. A). What is the pH of NH3? B). What is the pH of the resulting solution? HELP :(

chemistry
How many liters of 0.50M NaOH must be added to 125 mL of 0.75M HCL to neutralize it

AP Chemistry
Approximately how much water should be added to 10.0 mL of 12.4 M HCl so that it has the same pH as 0.90 M acetic acid (Ka = 1.8 10-5)?

Chemistry
What volume (mL) of .20 M HCL needs to be added to 1.23 L of .10 M acetic acid to reduce percent ionization to 1.00%?

chemistry
hw much 0.1N NaoH would u have added to 30ml of 0.1N Hcl at a equivalent point?

physic
Hi! help me please, Thank you. A spherical steel ball bearing has a diameter of 2.540 cm at 23°C. (a) What is the diameter when its temperature is raised to 94°C? cm (b) What temperature change is required to increase its volume by 0.9%? I only need help on part b.Thank

Math Help please
You complain that the hot tub in your hotel suite is not enough. The hotel tells they will increase the temperature by 10% each hour. If the current temperature of the hot tub is 75 degrees Fahrenheit, what will be the temperature of the hot tub after three hours to the ...

chemistry
Given a 1.00 L solution that is 0.60 M HF and 1.00 M KF, calculate the pH after 0.080 mol NaOH is added, and calculate the pH after 0.24 mol HCl is added to the original solution.

Chemistry
Determination of Ksp, ΔG°, ΔH° and ΔS° for Ca(OH)2. *** Need help on problem #3 & #4 *** CALCULATIONS: 1. Calculate the average solubility of calcium hydroxide, Ca(OH)2, at each temperature. 2. Calculate the Ksp for Ca(OH)2 at each temperature. 3. Calculate ...

Chemistry
Consider the reaction: M + 2HCl ¨ MCl2 + H2 When 0.85 mol of the metal, M, reacted with an aqueous HCl solution (the HCl is in excess), the temperature of the solution rose because the reaction produced 6795 J of heat. What is ∆H in kJ per mol of M for this reaction...

Thermodynamics
Consider 100 kg/s of steam expanding in a turbine. The inlet to the turbine is at 15 MPa, 500 degrees C. The steam expands to 0.01 MPa. The exit entropy is 6.200 kJ/(kg.K). Though the turbine is well insulated, at a place where the temperature is 127 degrees C, a loss of ...

chemistry
Finding out if the amount of heat produced depends on an increase in the concentration of Hcl

chemistry
Finding out if the amount of heat produced depends on an increase in the concentration of Hcl

finance
I need help bad. You have been running your small business, Craft’s Boat Shop, for several years now and have been very successful.  You have come to the point where you expect sales to increase next year and want to be sure that you have enough assets available to support ...

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