Questions 2-3 refer to : 〖KClO〗_3 + C_6 H_12 O_6 = KCl + 〖CO〗_2 + 〖H〗_2O?

12,546 results

chemistry

Questions 2-3 refer to : 〖KClO〗_3 + C_6 H_12 O_6 = KCl + 〖CO〗_2 + 〖H〗_2O? 2. Balance the equation. How many mole of potassium chlorate react with 0.250 mole of glucose How many grams of carbon dioxide are formed. How many grams of ...

CHEMISTRY

Balance the oxidation reduction equation in half reaction PbO2 + KCl => KClO + KPb(OH)3 thank you a lot

Chemistry

How to set up to solve the equation 2 KCLO^3 ---> 2KCL + 3O^2 HOW MANY MOLES OF O^2 CAN BE PRODUCED BY LETTING 12.00 MOLES OF KCLO^3 REACT?

chemistry

I need steps of solving this question Balance the oxidation reduction equation in electron ion / half reaction PbO2 + KCL = KCLO + KPb(OH)3 please best regards

chemistry

Questions 7-9 refer to the following substances. (A) H2 (B) CH3OH (C) CH2Cl2 (D) KCl (E) Co 7. Is a solid at 25C and 1 atm 8. Is capable of hydrogen bonding 9. Its properties are governed by London(dispersion) forces.

Chemistry

OMG i'm soo screw for chem.. >_<ahhh i wonna drop it soo bad!!! PLEASE help me.... AND THANK U!!! Balance redox equations MnO4 - + HCO2H --> Mn^2+ + CO2 K2S3O6 + KClO + KOH --> K2SO4 + KCL + H2O

Chemistry

If 32.3 grams of KCl are dissolved in 192 grams of water, what is the concentration of the solution in percent by mass? 5.94% KCl 8.55% KCl 14.4% KCl 16.8% KCl Can someone explain this to me? I don't want the answer I just want to know how to find it.

chemistry

What volume of each of the following solutions contains 0.13mol of KCl? 1).345M of KCl 2)2.0M of KCl 3).895M of KCl

Chemistry

Hi! I am doing this chemistry lab of solubility curve of a solid investigation and this is for KCl. The purpose of this lab is to investigate the relationship between the solubility of potassium chloride and the temperature of its solution and to create a solubility curve for ...

Chemistry

Hi! I am doing this chemistry lab of solubility curve of a solid investigation and this is for KCl. The purpose of this lab is to investigate the relationship between the solubility of potassium chloride and the temperature of its solution and to create a solubility curve for ...

AP Chemistry

To prepare 1.000 kg of 5.5 percent by mass KCl (aq), one may dissolve a. 994.5 g KCl in 5.5 g of water b. 5.5 g KCl in 994.5 g of water c. 5.5 g KCl in 1000.0 g of water d. 55 g KCl in 945 g of water e. 55.0 g KCl in 1000.0 g of water

Chemistry

Can you please check my answer? Balance the following equation: Cl2 + KI --> I2 + KCl How many grams of Cl2 are used to form 6.8 g of KCl? So 6.8 grams of KCl divided by 74.55g Kcl x 1molCl2 divided by 2mol KCl multiplied by 70.91 g Cl2/mol.... 3.2 grams of Cl2

chemistry

Find the number of moles in 85 g KCl. A. 3.3 mol KCl B. 1.1 mol KCl C. 11 mol KCl D. 2.5 mol KCl B

chemistry

Calculate each of the following quantities in 0.183 mole {\rm (C_3H_5)_2O}: Find the Atoms of H and C

physical science

please could you help me to draw the structural formula of C_5 H_12

Chemistry

Which of the following is more concentrated? (A)0.5%kCl in 1Lwater (B)0.5ppm kCl in 1L water (C)0.5ppb kCl in 1L water (D)ALL are the same

chem

a solution is prepared with 3.26g kcl and water to make 25.0ml,of kcl,what is the %(m/V) of the kcl solution.

chemistry

KCl(s) → K+(aq) + Cl‾ (aq) Solid KCl dissolves as shown in the above equation. A 6.60 g sample of KCl was dissolved in 42.3 g of water. The initial temperature of the water was 21.90°C. After the compound dissolved, the temperature of the water was 10.20°C. ...

English

1. It's very noisy here. 2. I can't stand it anymore. =========================== What does 'it' refer to in #1? What does 'it' refer to in #2? Are both refer to the same thing?

chemistry

a solution of kcl contains 10. grams of kcl in 100. ml of water at 30c. how many additional grams of kcl are needed to saturate the solution?

Chemistry

what is the pH of a solution created by adding 15.5 g of KClO to 228 mL of 1.08 M HClO(aq).?

Chemistry

When solutions of KCl and Pb(NO3)2 are mixed, a precipitate forms. Which of the following is the balanced equation for the double replacement reaction that occurs? a. KCl(aq) + Pb(NO3)2 (aq) ¨ KNO3 (aq) + PbCl2 (s) b. KNO3 (aq) + PbCl2 (s) ¨ KCl(aq) + Pb(NO3)2 (aq) c. K...

chemistry, freezing point depression

Hey guys I did a lab and I have to answer the questions relating to the lab. I did question 1 & 2, can someone check if they are correct, and question 3 I don't know how to do it. 1. Calculation to Determine the molecular weight of unknown substance Mass of unknown used: 2.0 g...

CHEMISTRY HELP!!!!!!!!

How many grams of KCl are produced by the thermal decomposition of KClO3 that produces 25mL of O2 at 25 degrees and at 1 atm? A)0.0508 B)0.0762 C)0.0835 D)0.125 what is the anwser and what equation would i use to get the anwser? Write the balanced equation for the ...

chemistry

Ca(ClO3)2 + KCl --> CaCl2 + 3O2 + KCl Mass of test tube = 7.918g Mass of KCl/Ca(ClO3)2 mixture + tube = 19.164g Mass of KCl/CaCl2 residue + tube = 18.635g What is the weight % of Ca from the Ca(ClO3)2 impurity in the original mixture?

English

Could you please tell me if the questions are grammatically correct? Thank you very much. 1) What does the word “rub” denote and connote? Why does Hamlet arrange a play at court? What is the function of the “play within the play”? 2)Whose ghost appears to Hamlet? Why? ...

chemistry

How would you prepare 3.5 L of a 0.9M solution of KCl? A. Add 23 g of KCl to a 3.5 L container; then add enough water to dissolve the KCl and fill the container to the 3.5 L mark. B. Add 233 g of KCl to a 3.5 L container; then add enough water to dissolve the KCl and fill the ...

English

Good! Now, hold the musical pipe and blow across each straw. - 1)It's cool. How does 2)it make a sound? ---------------------------------------What does 1)it refer to? Does 1) it refer to 'the musical pipe'? Or is 1) it "Situation It"? What does 2)it refer to? Does 2) it refer...

Chemistry

determine the number of grams of KCl salt contained in 1.25L of a 5.00%(W/V) KCl(aq)

chemistry

How many moles of ions (cations and anions) are contained in 1.2 L of a 1.9 M solution of KCl? KCl K+ + Cl-)

Chemistry please help

Hey guys I did a lab and I have to answer the questions relating to the lab. I did question can someone please check if these are accurate 1. Calculation to Determine the molecular weight of unknown substance Mass of unknown used: 2.0 g Mass of water used: 50.0 g (0.05kg) Kf...

chem

What volume of 0.33 M KCl is needed to make 250 mL of 0.11 M solution? The molecular weight of KCl is 74.55.

chemistery

you have 2.00kg of KCL dissolved in 0.600L of H2O what is the percent solution of KCL(w/v)?

chem

What mass of KCl in grams is formed when 2.00 lbs of KC103 is decomposed? KClO3 --> KCl + O2

Chemistry

The unit cell of KCl is 6.31 Å on an edge. Find the density of KCl if there is 4 atoms of each element.

chemistry

What is the percent by mass concentration of KCl in a solution prepared by adding 80.0 g KCl to 200.0 g of water?

Chem

what mass of KCl in grams is formed with 20 lbs of KClO3 is decomposed KCl03 yields KCl + O2

Chemistry 3A

How many grams of KCl would you need to weigh out to prepare 0.25L of a 2.00 M KCl solution?

University of Liberia , Chemistry

How much kcl in grams is contained in 0.488l of 1.25m kcl solution?

chemistry

How many moles of KCL are contained in 114 mL of a 1.85 M KCL solution?

chemistry

how much of a 0.225 M KCl solution contains 55.8g of KCl

science

how much of a 0.225 M KCl solution contains 55.8g of KCl

science

how much of a 0.225 M KCl solution contains 55.8g of KCl

Chemistry

A KCl solution containing 42g of KCl per 100.0 g of water is cooled from 60 C to 0 C . What will happen during cooling?

Chemistry

A KCl solution containing 42g of KCl per 100.0 g of water is cooled from 60 C to 0 C . What will happen during cooling?

Chemistry

A KCl solution containing 42g of KCl per 100.0 g of water is cooled from 60 C to 0 C . What will happen during cooling?

chemistry

What mass of KCl \rm KCl is needed to precipitate the silver ions from 13.0mL mL of 0.200 M M AgNO 3 \rm AgNO_3 solution

Chemistry

How do I calculate the molality of a saturated solution of KCl at 70 degrees Celsius? I have gotten the moles of KCl (.66) but am not sure where to go from there.

Chemistry

What is the maximum amount of KCl that can disolve in 500 g of warer? The solubility of KCl is 34g/100 g H2O at 20 degrees C.

Chemistry Help!

If 100 grams of KClO3 are heated to form KCl and O2 according to the equation KClO3 ¨ KCl + O2 (Hint: You need to balance the equation) a. How many moles of KClO3 reacted? b. How many moles of KCl are formed? c. How many grams of KCl are formed? d. how many moles of O2 are ...

chemistry

Given two liters of 0.496M KCl describe how you would use this solution to prepare 250.0 ml of 0.175M KCl.

chemistry

How do I find Experimental KCl solubility with this data: Test tube solute: Crystalizing temp KCl 35g/100ml 23.97C 40 39.55 45 57.10 50 75.20

chemistry

if i have two salts KCl and NaCl can I say that KCl conducts more electricity because it has an cation with lower ionization energy

Chemistry URGENT

Could someone let me know if I answered these questions? 1. How do you classify the liquid pair mineral oil -- H2O, miscible or immiscible? I believe the answer is immiscible because oil and water do not mix. 2. what would be the Molarity of a solution containing 0.5 mole of ...

chemistry

For an experiment, a student needs 1L each of 2M NaOH and 2 M KCl solutions. The NaOH will be prepared from a 12M stock solution, whereas the KCl will be prepared from dry, powder,KCl. Describe the process by which each of the solutions can be prepared. Include: Mention of ...

chemistry(check my work)

If 6.01 g of K2SO3 dissolved in 930 mL of water reacts stoichiometrically according to the balanced equation in a reaction solution with a total volume of 990 mL, what is the molarity (M) of KCl produced? K2SO3(aq) + 2 HCl(aq) → SO2(g) + 2KCl(aq) + H2O(l) 6.01gx ...

3rd grade

refer to the frequency table to anwser the questions

Chemistry

What is the concentration (M) of K+ in a solution made by mixing 25.0 mL of 0.100 M KCl with 50.0 mL of 0.0500 M KCl? Can you please explain how to solve this problem. I thought to do 25*.1+50*.05=5 But that seems wrong. What should I try to do?

Chemistry

Which of the following mixtures of KCl in water is a saturated solution and which is an unsaturated solution; 1)100g of KCl in 100mL of H2O at 40°C 2)50g of KCl in 100mL of H2O at 70°C 3) 120g of KCl in 100mL of H2O at 60°C My data is: Temperature82°C 58°C 39°C 18°C 16...

Pharmacy math

calculate the ordered medication for each of the following IV bags to achieve the ordered concentration Ordered: Add 30 mEq KCl per L of IV fluid. On hand: 360 mL IV solution. On hand is KCl 2 mEq / mL Add: ______mEq; ___ mL Ordered: Add 20 mEq KCl per L of IV fluid. On hand: ...

English

These are the very last questions of the day. Thank you all in advance 1) How did the Elizabethans conceive the universe and by whom did they belive it was ruled? 2) Outline the characters of Brutus and Antony and refer to their attitude towards the crowd. 3) Why does Hamlet ...

stiochiometry

Hello! This is my take home final for my chemistry class and I can use any resources to help me solve the questions. Can someone help me get started on all of them? Thanks… (note: he wants us to solve them using stoichiometry) 1. The resting calorie use of a human is about 1...

chemistry

What volume for 1.5M KCl solution must be used to prepare 500. mL of a .550 M KCl solution? I need the set up

Chemistry

12.5 g of KCl (MM = 74.55 g/mol) is dissolved in enough water to make 675 mL of solution. Calculate the molarity of the KCl solution.

chemistry

What is the percent by mass concentration of KCl in a solution prepared by adding 80 grams KCl to 200 grams of water?

Chemistry

You are given 1.226 g of a mixture of KClO3 and KCl. When heated, the KClO3 decomposes to KCl and O2, 2 KClO3 (s) → 2 KCl (s) + 3 O2 (g), and 246 mL of O2 is collected over water at 24 °C. The total pressure of the gases in the collection flask is 755 torr. What is the ...

Chem 1010

15.3 g of KCl (MM = 74.55 g/mol) is dissolved in enough water to make 600 mL of solution. Calculate the molarity of the KCl solution.

chemistry

An aqueous solution contains 24.2 g of KCl and is diluted to 100. mL. What is the mole fraction of KCl in the solution if the density is 1.12 g/mL?

Chemistry

When heated, KClO3 decomposes into KCl and O2. If this reaction produced 79.9 g of KCl, how much O2 was produced (in grams)?

chemistry

what is the maximum amoutn of KCL that can dissolve in 200 gram of water? ( solubility of KCL is 34 grams/100 gram H2O at 20 celsius

chemistry

An aqueous solution is 0.273m kcl. What is the molar concentration of potassium chloride, kcl? The density of the solution is 1.011 x 1 1000 g/L Who helps me

chemistry

A student stated that the solubility of KCL, at 20 degrees Celsius was 36 grams of KCL per 100 grams of solution. What is wrong with this statement?

chemistry

A student stated that the solubility of KCl at 20 degrees Celsius was 36 grams of KCl per 100 grams of solution. What is wrong with this statement?

chemistry

when heated, kclo3 decomposes into kcl ad 02. 2kclo3--> 2kcl+3o2 if this reaction produced 61.7 g of kcl, how much o2 was produced (in grams)?

Chemistry

Assume that 50g of KCl is dissolved in 100g of water at 100*C and the solution is allowed to cool to 30*C. How much KCl crystallizes from the solution?

Chem

Given this reaction: Pb(NO3)2 + 2 KCl --> PbCl2 + 2KNO a. How many milliliters of 2.00 M Pb(NO3)2 will react with 50.0 mL of 1.50 M KCl

Chemistry

What formula do I use to figure. 16.5 g of KCL (MM=74.55 g/mol) is dissolved in enough water to make 575 mL of solution. Calculate the molarity of the KCl solution.

Chemistry

A sample of a mixture containing only sodium chloride (NaCl) and potassium chloride (KCl) has a total mass of 4.000g. When this sample is dissolved in water and excess silver nitrate is added a white precipitate (AgCl) forms. After filtration and drying, this precipitate had a...

chemestry

A sample of 0.75 KCL is added to 35 g of H2O in a calorimeter and stirred until dissolved, the temperature of the solution decreases from 24.8 to 23.6 what is the enthalpy of solution expressed in kJ / mole KCL?

Kay -- University of Arizona

I've removed your complex post for two main reasons. You refer to materials (a tutorial) for which we have no access, and you have given us no idea of your thinking about these questions. Please repost, using an appropriate school subject and presenting your thoughts about how...

Chemistry

calculate the number of K atoms in a 1.00 ug sample of pure KCL. K=39.1 g/mol and KCL= 74.6 g/mol.

ap chemistry

Cl2 + 2koh-->kcl _kclo +H2O 3KClo-->2Kcl+kclo3 4kclo3-->3kclo4 +kcl what mass of cl2 (g) is required to make 234g kclo4

Chemistry

When a 5.00-g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 3.978 kJ·K–1, the temperature decreases by 0.290 K. Calculate the molar heat of solution of KCl.

Chemistry

can you please please help me with these questions I don't know how to do any of them. I know how to calculate moles and grams and mole ratio,etc but I don't understand the limiting excess reactant and yield stuff. Thanks! 1.In the following chemical reaction, how many grams ...

Chemistry

can you please please help me with these questions I don't know how to do any of them. I know how to calculate moles and grams and mole ratio,etc but I don't understand the limiting excess reactant and yield stuff. Thanks! 1.In the following chemical reaction, how many grams ...

chemistry volume problem

Can someone please explain to me how to do this?! I am completely lost. Calculate the volume indicated for each of the following: liters of a 2.00M KCl solution to obtain 0.600mol of KCl.

Chemistry

You are given 2.677 g of a mixture of KClO3 and KCl. When heated, the KClO3 decomposes to KCl and O2, 2 KClO3 (s) → 2 KCl (s) + 3 O2 (g), and 605 mL of O2 is collected over water at 28 °C. The total pressure of the gases in the collection flask is 763 mm Hg. What is the...

chemistry

a chemist dissolves kcl in water at constant temperature until no more kcl dissolves, how would you most accurately classify this solution, dilute, saturated, unsaturated or supersaturated?

Chemistry

I have two questions that I do not know how to answer. Thanks for your help! 1. Calculate the [OH^-], [H^+], pH, and pOH for a 0.50M solution of CN^- 2. Calculate the molar solubility of PbCl2 in 0.40M KCl

chemistry

What is the molarity of a solution containing 18.0g of KCl in 262mL of KCl solution?

English

What does voice refer to in a sentence? What does tense refer to?

writing

What does voice refer to in a sentence? What does tense refer to?

English

1. I got into the room and found each boy was playing with a toy. I took him out. [Can 'him' refer to 'each boy'? ] 2. Blow across each straw. Can you understand how it makes a sound? [Can 'it' refer to 'each straw?] 3. He had to repair each desk. It was broken badly. [Does '...

Chemistry

Which two solutions, when mixed together, will undergo a double replacement reaction and form a white, solid substance? 1. NaCl(aq) and LiNO3(aq) 2. KCl(aq) and AgNO3(aq) 3. KCl(aq) and LiCL(aq) 4. NaNO3(aq) and AgNO3(aq) I know the answers 2 but I have no idea why.. thanks.

chemistry

Which of these pairs of substances in aqueous solution would constitute a buffer? a. HCl + KCl b. KHPO4 + K2HPO4 c. KOH + KCl d. HCl + KOH

Chemistry

A solution is made by dissolving 55g of KCl in enough water to make 1.00 L of solution. Assume that the density of the solution is 1.00 g/mol. Calculate the mass percent, molarity, molality, and mole fraction of KCl.

chemistry please help

Which of these pairs of substances in aqueous solution would constitute a buffer? a. HCl + KCl b. KHPO4 + K2HPO4 c. KOH + KCl d. HCl + KOH

Chemistry

Which of the following solutions added to the hydrogen peroxide solution may act as a catalyst. KI, KCl, NaCl Are KI, KCl, NaCl all catalysts? But KI is more effective catalyst? Thanks.

Chemistry

Which of the following solutions added to the hydrogen peroxide solution may act as a catalyst. KI, KCl, NaCl Are KI, KCl, NaCl all catalysts? But KI is more effective catalyst? Thanks.

Chemistry

80.0 grams of KBr is mixed with sufficient water to prepare 1865 mL of solution. This solution is then mixed with 46.3 mL of 0.425 M KCl solution. 12 mL of this mixture is subsequently added to 61.0 mL of distilled water. Calculate the molarity of K+ ions in the final mixture...

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