Chemistry

I need some help with calculating percent yield and percent purity of aspirin. Here's my data (questions follow): SYNTHESIS Mass of salicylic acid.., 2.0 g Volume of acetic anhydride.., 5 mL Mass of watch glass.., 22.10 g Mass of aspirin and watch glass.....

18 years ago

A combustion bomb containing 5.417 g of aluminum metal and 15.974 g of iron III oxide is placed in an ice calorimeter that initially contained 7.746 kg of ice (at o degrees C) and 7.894 kg of liquid water (at o degrees C). The reaction, once ignited by re...

18 years ago

For each of the following, write the electron configuration and Lewis symbol: A. In B. In- C. K+ D. I-

17 years ago

How do I figure out how to write the lewis symbol for the following A. Br B. Br- C. Sr D. Sr2+

17 years ago

Write the electron configuration of Sn and Sn2+ Give the electron configuration of Cu+ and Cu2+

17 years ago

Arrange the members of each of the following pairs in order of increasing radius and explain the order: A. Te, Te2- B. Al, Al3-

17 years ago

Which has the larger radius N^3- or P^3-? Please Explain

17 years ago

Use Lewis symbols to represent the electron transfer between the following atoms to give ions with noble gas configuations: A. Mg and S B. Ba and I

17 years ago

The amount of heat required to raise temperature of 55.85 g of iron 1 degrees C is called its A. Change of energy B. Enthalpy C. Molar heat capacity D. Specific heat capacity E. Specific Heat.

17 years ago

Which of the following has a standard enthalpy of formation value of zero at 25 degrees C and 1.0 atm A. Fe(s) B. Fe2O3(s) C. FeSO4(s) D. FeSO4(aq) E. FeS3(s) and what is enthalpy or how do you find it

17 years ago

Can some one read my lab report for me... I have it almost finished.. I just need help on the discussion part Please

17 years ago

The specific heat of water is at 4.184J/g * degree C. How much heat is evolved, or absorbed, when the temperature of 9.00 mol of liquid water cools from 38 degrees C to 28 degrees C? How do I start this problem

17 years ago

Directions: Use the principles of atomic structure and/or chemical bonding to explain each of the following. In each part, your answer must include references to both substances. Problem: The carbon-to-carbon bond energy in c2h4 is greater than it is in c...

17 years ago

If i used NaCl to try to precipitate Ag+ from a solution, will it be as effective as HCl?

16 years ago

Ammonia has the formula NH3. Household ammonia is a dilute aqueous solution of NH3 . Aqueous ammonia is a base that can neutralize acids. If 18.4mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar...

16 years ago

so i got a test and like usual my teacher didn't teach me half of the stuff that's going to be on it so he gave us a pretest of what is going to be on it and an answer key and i got several questions 13.) what is the pH of a formic acid if the concentrati...

16 years ago

me again 8. You are given two beakers, A and B, with colorless liquids in htem. What two tests would you perform to determine which one is a strong acid and which one is a weak acid? Be specific with the test and the results as well as how you would deter...

16 years ago

How many mL of .200M acetic acid are mixed with 13.2mL of.200M sodium acetqte to give a buffer with pH=4.2

16 years ago

Vitamin B12, cyanocobalamin, is essential for human nutrition. It is concentrated in animal tissue but not in higher plants. Although nutritional requirements for the vitamin are quite low, people who abstain completely from animal products may develop a...

16 years ago

Fe2O3(s) + 2 Al(s) 2 Fe(l) + Al2O3(s) Suppose we want to make 18.0 grams of iron. We must figure out how much starting material we need. This is a three-step calculation. Let's go through these steps one-by-one to calculate the mass of Fe2O3 that we must...

16 years ago

Write the balanced equation for the combustion of octane (C8H18). Assuming that gasoline is 100% octane, with a density of 0.692 g/mL, what mass of CO2 is produced by combustion of 1.7 1010 gal of gasoline? Need help on how to get started, I have the bala...

16 years ago

Hi, please help! Question: Farmers added Calcium hydroxide to soil one morning. They then planned to add Ammonium chloride fertilisers to the soil immediately. However, the instruction label on the packet of fertilisers read: "Do not add fertiliser immedi...

15 years ago

You helped me earlier today whith one of these problems... and i have two more...... What is the ionic and net ionic equation? 1. Ca(HO)2(aq)+ Na2CO3(aq)-> CaCO3 -> (s)+ 2NaOH (aq) I don't understand why there are two arrows? This is what i have so far......

15 years ago

explain why the name of the insect millipede doesnt follow SI conventions? please help me i cant find this any where in my text. I would be very happy if you did help. :D

15 years ago

using only words and no numbers how would i explain the steps necesarry to show how many kilograms are in a milligram? thanks :D

15 years ago

Calculate the change in energy when 665.0 g of CH3OH(g) completely reacts at a constant temperature of 300 K and constant pressure of 0.95 atm. R = 8.314 J/mol*K and R = 0.08206 atm*L/mol*K So i used the formula change in energy = change in H - nRT 90.7-5...

14 years ago

How do you know which elements are solids, liquids, and gases at STP?

14 years ago

How many milliliters of 0.355 M NaF solution are needed to react completely with 24.6 mL of 0.216 M CaCl2 solution? How many grams of CaF2 will be formed? The reaction is CaCl2(aq) + 2NaF(aq) → CaF2(s) + 2NaCl(aq)

14 years ago

Calculate the number of moles K2CO3 of and MgCl2 in the 15 ml aliquots of reagent solution

13 years ago

what is the chemical balance equation for the following: Magnesium metal and hydrochloric acid copper matal and hydroshloric acid potassium hydroxide and acetic acid

13 years ago

Calculate DeltaHrxn for the following reaction: C + H2O --> CO + H2 Use the following: C + O2 --> CO2 DeltaH = -393.5 kJ 2CO + O2 --> 2CO2 DeltaH = -566.0 kJ 2H2 + O2 --> 2H2O Delta H = -483.6 kJ DeltaHrxn = ?

13 years ago

A 53 mL sample of a solution of sulfuric acid is neutralized by 37 mL of a 0.18 M sodium hydroxide solution. Calculate the molarity of the sulfuric acid solution. Answer in units of mol/L

13 years ago

Explain the Hyberdaization scheme for the central atom&the molecular geometry of CO2.

13 years ago

What volume of 0.250M KOH is required to titrate 2.30 x 10^3 mol of the weak acid H2C2O4 ? I know the answer is 18.4, but can you show the process?

13 years ago

A solution of AuCl- is mixed with a solution of Sn2+ under standard conditions. What is the equation? the answer is 2AuCl4- + 3Sn2+ -> 3Sn4+ + 2Au + 8Cl- how do i get this? ITS desperate... plz help me! THANK_YOU SO MUCH!

13 years ago

How to balance the following equation: I2 + Cl- = ?

12 years ago

Write equatios for the ionization of the following acids. (a)HF , (b)H2SO3 , (c)CH3COOH , (d)HNO3.

12 years ago

Can someone please tell me the heat of fusion for Lauric Acid, Oxalic Acid, and Cetyl Alcohol? I've looked and can't find them anywhere! Thanks!

12 years ago

I have all of the answers but this one so if anyone knows this answer, i can trade you :) I tried using the formulas that were posted but i ended up with a weird answer that didn't work.... A photon interacts with a ground state electron in a hydrogen ato...

12 years ago

How many grams of sucrose are needed to make 875 mL of a 39.0% (w/v) sucrose solution?

12 years ago

the hydronium ion concentration of a 0.050 M solution of a weak acid is 5.9 X 10^-3 M. the acid-dissociation constant is 1.37 X 10^-4 at 25 celsius. what is the pH of this solution? A. 0.077 B. 1.30 C. 2.23 D. 3.86 E. 5.13

12 years ago

Hypobromous acid,HOBr, has acid -ionization constant of 2.5 X 10^-9 at 25 Celsius . What is the pOH of a 0.63 M HOBr solution? A4.40 B3.87 C5.20 D9.60 E10.13 I'm getting two answers between A or B

12 years ago

What is the equilibrium concentration of chloroacetic acid in a solution prepared by dissolving 0.0314 mil of chloroacetic acid in 1.10L of water? For chloroacetic acid, Ka= 1.4X10^-3

12 years ago

What is the percent ionization of a solution prepared by dissolving 0.0286 mol of chloroacetic acid in 1.60 L of water? For chloroacetic acid ,Ka=1.4x10^-3

12 years ago

in a 0.01 M solution of 1.4 butanedicarboxylic acid, (Ka1=2.9x10^-5, Ka2=5.3x10^-6), which species is present in the lowest concentration?

12 years ago

The value of the equilibrium constant, Kc, at a certain temperature is 2.56 x 10-1. If the reaction quotient for a mixture of these species at the same temperature is found to be 9.90 x 10-4, would the mixture yield more products, more reactants or is it...

12 years ago

At 565 K the value of Kp for the equilibrium represented by the balanced equation is 2.00 x 10-1. Calculate the value of Kc at the same temperature. Express answer in scientific notation. PCl3(g)+Cl2(g) = PCl5(g) ____ x 10 _____

12 years ago

Convert the following energy units. 905 kJ to J 2970 kcal to kJ 5.21 × 106 J to kcal

11 years ago

Calculate the number of grams of xenon in 3.566 g of the compound xenon tetrafluoride.

11 years ago

Calculate the formula mass for each of the following halogen compounds to five or more significant figures:? bake asked 5 months ago (a) NaIO3 (antiseptic) (b) CCl2F2 (former refrigerant)

11 years ago

Br2(l)+Cl2(g) (double arrow) 2BrCl(g) dH=+29.4 kJ/mol I am having trouble understanding this. Will the system shift left, right, or unchanged and why? a.Increasing Temp. b. Increasing pressure in flask by adding Ar. c. Increasing volume of flask d. Adding...

11 years ago

To what temperature would the reaction below need to be heated to have a rate constant of 8.474e-4 M-1s-1 if the rate constant was 2.7000e-4 M-1s-1 at 327.00°C and the activation energy was 166.000 kJ/mol? H2(g) + I2(g) ↔ 2HI(g) a. 609.24°C b. 336.09°C c....

11 years ago

The initial concentration of PCl5 was 0.1983 M. It was allowed to decompose at some temperature until equilibrium had been attained (see reaction below). What must be the equilibrium concentration of PCl3? PCl5(g) ↔ PCl3(g) + Cl2(g) Kc = 0.0580 a. 0.1162...

11 years ago

If an explanation for correct answer could be provided, that would be great! Which equilibrium constant indicates that the reaction will produce mostly products? a. Kc = 3.46x10-6 b. Kc = 1.96x10+7 c. Kc = 0.319 d. Kc = 0.37

11 years ago

Method for getting correct answer for this? Thank you! A mixture containing an initial concentration of 0.1877 M for H2 and 0.1432 M for Cl2 is allowed to come to equilibrium (see reaction below). What must be the equilibrium concentration of HCl? H2(g) +...

11 years ago

Method for getting correct answer for this? Thank you! For the reaction A ↔ 2B K = 3.80x10-7 , if one started with 0.154 M A approximately how much A and B would there be after equilibrium had been established? a. very little A, 0.154 M B b. 0.126 M A; 0....

11 years ago

Method for getting correct answer? Thank you! What is the value of Kc at 226.85 °C for the reaction below if Kp is 6.24e-3 at this temperature? CO(g) + 2H2(g) ↔ CH3OH(g) a. 3.70e-6 b. 2.1614 c. 1.08e5 d. 10.5000

11 years ago

Method for how to get answer? Thank you! For the equilibrium reaction below. To what is Kc equal? N2(g) + 3H2(g) ↔ 2NH3(g) a. [N2] + 3[H2] ------------------ 2[NH3] b. [N2][H2]3 ------------------ [NH3]2 c. 2[NH3] --------------- [N2]+ 3[H2] d. [NH3]2 ---...

11 years ago

Method for getting correct answer? Thank You! What is Kp for the reaction below, if Kc = 1.13e-3 at 111.2°C? 4A(s) + 5B(g) ↔ 3C(g) a. 1.36e-5 b. 1.15e-12 c. 1.14e-6 d. 8.42e-3

11 years ago

Method for getting correct answer? Thank you! Initially there were equilibrium concentrations of 0.1887 M A, 0.1042 M B. Which of the equations below is correct if the pressure decreased by a factor of 2.40? Use the reaction below. 6A(g) ↔ 5 B(g) Qc = 0.4...

11 years ago

Method for getting correct answer? Thank you! The reaction below is an endothermic reaction. What would one have to do to shift the equilibrium to the right? SO2Cl2(g)↔SO2(g) + Cl2(g) a. Decrease the temperature b. Increase the temperature c. Remove some...

11 years ago

Find the Qsp when 5 mL of 0.17 M K2 CO3 (aq) and 1 L of 0.013 M AgNO3(aq) are mixed together. The solubility product of Ag2CO3 is 6.2 × 10−12

11 years ago

Calculate the volume of 2.00 M solution of KOH that is required to neutralize 30.0 mL of 1.00 M solution of HNO3.

11 years ago

How can i get the step by step procedure for a chemical reaction? For example: the step by step procedure for the synthesis reaction of ammonia

10 years ago

Consider the following reaction: 2 Mg + O2 → 2 MgO ΔH rxn = -1203 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 4 moles of Mg. How do I set this up correctly?

10 years ago

Consider the following equation: CO + 2 H2 → CH3OH ΔH rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H2. How would u set that up?

10 years ago

A 4.0−L sample of a 6.3M NaCl solution is diluted to 50L . What is the molarity of the diluted solution? How would I set this up?

10 years ago

A 44.8−mL sample of a 7.0M KNO3 solution is diluted to 1.10L What volume of the diluted solution contains 16.0g of KNO3? Would I do the same thing for this one or would does it have an extra step it it.

10 years ago

A hard water sample contains 0.0081 %Ca by mass (in the form of Ca2+ ions)What mass of water in grams contains 1.3g of Ca? (1.3g of Ca is the recommended daily allowance of calcium for 19- to 24-year-olds.) Need help set this up?

10 years ago

An ethylene glycol solution contains 26.2g of ethylene glycol (C2H6O2) in 81.4mL of water. Calculate the freezing point of the solution. (Assume a density of 1.00 g/mL for water.) how do I set this up?

10 years ago

How many moles of each of the following are needed to give the same freezing point lowering as 5.0mol of the nonelectrolyte ethylene glycol in 1 kg of waterCH3−OH, a non electrolyte,KNO3, a strong electrolyte I am so lost with what they exactly want for t...

10 years ago

A sample of gas has a mass of 0.580g . Its volume is 119mL at a temperature of 80∘C and a pressure of 743mmHg . Find the molar mass of the gas. I think I got a step wrong in the problem, please help?

10 years ago

An equilibrium mixture of the following reaction was found to have [I2]= 0.0325M at 1200 ∘C. What is the concentration of I ? I2(g)⇌2I(g) Keq= 1.5×10−2 at 1200 ∘C Someone please help set this up?

10 years ago

Consider the reaction: SO2Cl2(g)⇌SO2(g)+Cl2(g) A solution is made containing initial [SO2Cl2]= 0.022M . At equilibrium, [Cl2]= 1.7×10−2M Calculate the value of the equilibrium constant.

10 years ago

Based on the data in this table, what would be the value of k at 795 K? T k 625 1.1 x 10^-4 635 1.5 x 10^-4 645 2.0 x 10^-4 I tried to figure it out using two different ways, and I got 7.3 x 10^-3 both times. I asked for a "hint" and the homework site tol...

9 years ago

A gas mixture containing 0.400 mol He, 0.184 mol CH4 and 0.0374 mol Ne was placed in a 3.00-L flask at 301 K. What is the PRESSURE (atm) in the flask?

9 years ago

How can you prepared to benzo phenol from phenyl magnetium bromide

9 years ago

Why was etching needed to bring out the grain boundaries? My answer: Is it for the light to bounce back?

9 years ago

Calculate the gram molecular mass of nitrogen if 360cc at STP weigh 0.45g.

8 years ago

NaCl [Symbol] Na + Cl2 Type of reaction: synthesis KOH + HNO3 [Symbol] HOH + KNO3 Type of reaction: double replacement Ca + S [Symbol] CaS Type of reaction: synthesis BaBr2 + Cl2 [Symbol] BaCl2 + Br2 Type of reaction: Cs2 + H2O [Symbol] CsOH + H2 Type of...

8 years ago

How many mole are there in calcium chloride, CaCl2 (CaCl2=111).

8 years ago

Neutralization of water containing H2SO4 and HNO3 with CaSO3. What is the pH in water if the volume is 1000 liter and the concentration of H2SO4 is 0,0013 M and concentration of H2SO4 is 0,0010 M ? And how much of CaCO3 is needed for neutralization of the...

8 years ago

How to prepare 10% sucrose solution enriched with 0.1% phenylalanine? And also how to make the stock solution of phenylalanine for the above process. I have prepared 10% sucrose solution by adding 10g sucrose in 100ml water , but how do i make 0.1% phenyl...

8 years ago

Given the equation C3H8+5O2->3CO2+4H2O. 1.)Suppose 1.5 moles of C3H8 will be used, How many moles of H2O and CO2 will be formed? 2.)what volumes (at STP) of O2 and CO2 are involved?

8 years ago

The molecules present in 5.2gms of glucose will be c6h12o6

7 years ago

2.40g of copper (ii)tetraoxosulphate(iv) crystals are prepared from 0.45g of copper (ii) oxide.the copper (ii) tetraoxosulphate(vi) crystals contain 0.45g of water of crystallisation.what mass of crystals and what is the mass of water of crystallisation w...

7 years ago

The half-life of rubidium-87 (natural absorbance 27.83%) is 5.1x10^11 years. What mass of rubidium is present if an average sample decay rate of 35.0 disint./sec is detected? I've already converted years to seconds but not sure what to do after..

6 years ago

What is the molecular geometry shape for H2GeO and is Sel2 polar or non polar. Thanks

6 years ago

Ammonia is produced from the reaction of nitrogen to the following balanced equation N2+3H2-2NH3

6 years ago

What is the balance equation of decane

6 years ago

What I don't understand is where I get the number of dots from and what is the electron configuration

17 years ago

so which is the correct way of increasing radius and what is a Te=

17 years ago

so in my book there is a chart but there is not a number for it so I can see which has a larger radius what is another way to tell which is larger they both have a 3- charge

17 years ago

correct thank you for the help

17 years ago

So I need to find the Hf of each of those equations

17 years ago

Fe(s) is an element right

17 years ago

Introduction: This report discusses an experiment to study the percent mass of iron determined by the concentration of a colored iron solution from the absorbance of the spectrometer. This lab is designed to tell the content of iron in cereal, usually foo...

17 years ago

wouldnt it be 4.184J/g * degrees C so 4.184 J/ 162 g H2O * 10 degrees C = ?

17 years ago

did you get all of it there is more than the introduction

17 years ago

Methods and Materials: The 100 mL volumetric flask with the colorless iron solution was fitted with a rubber stopper. First, transfer the colorless iron solution into a 250 mL volumetric flask, since the substance in the 100 mL volumetric flask was too mu...

17 years ago

-6783.72 J

17 years ago

Methods and Materials: The 100 mL volumetric flask with the colorless iron solution was fitted with a rubber stopper. First, transfer the colorless iron solution into a 250 mL volumetric flask, since the substance in the 100 mL volumetric flask was too mu...

17 years ago

Results: The combination of the solutions: sodium acetate, hydroxylamine hydrochloride and phenanthroline solutions mixed together with the colorless iron solution made the iron phenanthroline solution turn into an orange tint.

17 years ago

Discussion: This experiment was conducted to identify the iron content in a breakfast cereal. The results indicate that there was iron in the chosen breakfast cereal of Kix, the spectrometer shows that the absorbance or color was around .39 so about 39% a...

17 years ago

Discussion: This experiment was conducted to identify the iron content in a breakfast cereal. The results indicate that there was iron in the chosen breakfast cereal of Kix, the spectrometer shows that the absorbance or color was around .39 so about 39% a...

17 years ago

Discussion: This experiment was conducted to identify the iron content in a breakfast cereal. The results indicate that there was iron in the chosen breakfast cereal of Kix, the spectrometer shows that the absorbance or color was around .39 so about 39% a...

17 years ago

ALSO PART OF THE DISCUSSION In Figure B the line of y=0.0052x-6E-05, R^2 .9989 the .9989 is really close to 1, the closer to one the better, to go over one seems to make the lab a failure. Less than one must mean that the lab went well and was done correc...

17 years ago

it is a linear regression of a graph I have that deals with the absorbance by the concentration I couldn't paste it on here for you to see....

17 years ago

could help but i can't find that diagram ur talking about

17 years ago

Sorry about that The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood. Luminol is so sensitive that it can detect blood that has been...

16 years ago

Are you saying that the molar concentration is .005

16 years ago

Nevermind I figured it out with your help. The answer was 2.94. Thank you so much!

16 years ago

Do you think you know how to figure out this one: Sorry about that The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood. Luminol is s...

16 years ago

radius increasses by 25000 solve for dimater then solve for circumference i think

16 years ago

I'm making a mistake in using that equation: n (CH3COO-)= .0132*.2 = .oo264 ..does that mean that CH3COOH also has the same n? ph= pKa +log(Conjugate Base/ Weak Acid) 4.2= pKa + log (.00264/ .00264) since i have n the same it doesn't work. How do you calc...

16 years ago

how did you calculate pKa because this is a practise question for my test and we won't be given the value. so how would you calculate it?

16 years ago

Neither Ka nor Pka was given

16 years ago

okie thank you =)

16 years ago

Please elaborate on step 3. The balanced chemical equation is: Fe2O3(s) + 2 Al(s) -> 2 Fe(l) + Al2O3(s) After step 2 I have .32 moles Fe.

16 years ago

Got it now, thanks a ton.

16 years ago

Is the answer you gave the ionic and net ionic equation....

15 years ago

i do not know how to break down the ions when i know that they are soluble. for example...Ca(HO)2 is soluable but i don't know what to do with the two or what superscripts to use...

15 years ago

Thank you so much for giving me a step-by-step! I am homeschooled so i have no one to ask. I have had trouble with this and you are the only thing that has clearly told me how to do this. I only asked bob pursley b/c he gave me the answer last time and i...

15 years ago

okay..... K^+1 + OH^-1 + H^+1 + Br(not sure which ionization number to put here)-> K^+1 + Br + H20 (l) also, i am not sure what the other ions are.... (aq)? is my guess Then the net ionic equation is... OH^-1 + H^+1 -> H2O (l)

15 years ago

two more questions.... 1. so when you use the superscript ^- that is the same as saying ^-1 ? 2. what are OH^-1 and H^+1 in the equations? (liquid , or gas)

15 years ago

Thank you once again for helping me!!!!

15 years ago

With out using numbers just words what are the steps necesarry to show how many kilograms are in a milligram

15 years ago

What hapens you moving from left to right in a periodc table?

14 years ago

THX!

13 years ago

yes

13 years ago

THX SO MUCH!

13 years ago

how do i solve for Tf?

11 years ago

What is the weight per volume percent (i.e. % density) of 0.5522 g acetic acid in the 10.00 mL sample?

11 years ago

Thank you for the help!

11 years ago

Thank you! .434^5 / .0786^6 equals .653, that is correct! I was just able to answer another problem similar to this thanks to your help. Many thanks!

11 years ago

1355.37

11 years ago

Thank you I guess i forgot to convert

10 years ago

A 44.8−mL sample of a 7.0M KNO3 solution is diluted to 1.10L What volume of the diluted solution contains 16.0g of KNO3? Would I do the same thing for this one or would does it have an extra step it it.

10 years ago

Calculate the boiling point of the solution. whats you do for the next step then

10 years ago

if you had 12 moles, just use a simple ratio (called a molar ratio): 12 mol KClO3 * (3 mol O2)/(2 mol KClO3) = 18 mol O2 ... this is your answer!

9 years ago

That table looks a little wonky! I hope this looks a little better: T ....... k 625 ..... 1.1 x 10^-4 635 ..... 1.5 x 10^-4 645 ..... 2.0 x 10^-4

9 years ago

sad no one helped me

9 years ago

Re crystallization of Brass. we did the Rockwell Hardness test on a metal sample and then we took the metal sample to be seen under a microscope to see if there were any crystal twinning. This is why we etched the metal but I can not understand why we etc...

9 years ago

I don't know what to do with it but the problem is that I can do it.

8 years ago

Yes one is HNO3

8 years ago

calculate the number of potassium ions present in 7.45g of potassium oxide(atomic mass ofK=39u)

6 years ago

What is the net ionic equation for the reaction

3 years ago