J.R. S.

12/08/20

What is the expected osmotic pressure, in torr, of a 0.0100 M solution of NaCl in water at 25°C?

Follows • 2

Answers •1

12/08/20

plese help me please

Each arrow shows an electron moving from one energy level to another. Which transitions will release energy? A and D A and D only A only A only C only C B and C

Follows • 2

Answers •1

Chemistry

12/08/20

A 1.56g sample of copper reacts with oxygen to form 1.95g of the metal oxide. What is the empirical formula?

Follows • 2

Answers •1

Chemistry

12/08/20

What would ∆H be for the reaction 9 A + 3 B → 6 C?

Consider the hypothetical thermochemical equation 3 A + B → 2 C for which ΔH = 65.5 kJ/mol.a)If you have 5.30 moles of A, how much heat would be absorbed?b)If the reaction absorbs 345 kJ of heat,... more

Follows • 2

Answers •1

Chemistry

12/08/20

The reaction for the decomposition of dinitrogen monoxide gas to form an oxygen radical is: N2O(g) → N2(g) + O(g). If the activation energy is 250 kJ/mol and the frequency factor is 8.0 × 1011 s-1,

what is the rate constant for the first-order reaction at 1000 K?

Follows • 2

Answers •1

Chemistry

12/08/20

If 95.00 mL of 0.2500 M barium nitrate are combined with 150.00 mL of 0.1000 M lithium sulfate how many barium ions are in the resulting solution in units of millimoles ?

Follows • 2

Answers •1

Science Chemistry

12/08/20

Please help with this question, I would appreciate if you could explain your work where it needs explaining.

What is the molality of acetone in a solution composed of 255 g of acetone, (CH3)2CO, dissolved in 200 g of water?

Follows • 2

Answers •1

Math Chemistry

12/08/20

Please help with this question, I would appreciate if you could explain your work where it needs explaining.

What is the molarity of a solution composed of 5. 85 g of potassium iodide. KI, dissolved in enough water to make 0.125 L of solution?

Follows • 2

Answers •1

Chemistry

12/07/20

Assuming no change in temperature or pressure, how many liters of O2 would be needed to completely combust 4.0 liters of C4H6? 2 C4H6(g) + 11 O2(g) → 8 CO2(g) + 6 H2O(g)

this is a question that I am stuck on abs need help with: Assuming no change in temperature or pressure, how many liters of O2 would be needed to completely combust 4.0 liters of C4H6? 2 C4H6(g) +... more

Follows • 2

Answers •1

Chemistry

12/07/20

Oxyacetylene (C2H2)(ΔH=227.4kJ/mole) combusts in oxygen (ΔH= 0.0 kJ/mole) to produce carbon dioxide ΔH= -393.5 kJ/mole) and water . Calculate ΔH for the reaction in kJ.

Follows • 2

Answers •1

Chemistry

12/07/20

How many atoms are in 4.81 mol of pure aluminum?

Follows • 2

Answers •2

Chemistry

12/07/20

CALCULATING pH QUESTION

Calculate the pH for a 4.87×10−6 NH3 solution with a Kb=1.76 x 10−5 .NH3(aq) + H2O (l) <--> NH+14 (aq) + OH−1 (aq)

Follows • 1

Answers •1

Chemistry

12/07/20

pls help and show work

An aqueous solution of compound "X" has a concentration of 30.0% by mass. The density of this solution is 1.035 g/mL and compound "X" has a molar mass of 62.07 g/mol. Calculate the concentration of... more

Follows • 2

Answers •1

Chemistry

12/07/20

pls help and show answers

30.00 mL of 0.200 M Pb(NO₃)₂(aq) are mixed with 25.00 mL of 0.100 M K₃PO₄(aq). 1. What is the formula of the solid product formed in this reaction? 2. What mass of this solid product will be formed?

Follows • 2

Answers •1

Chemistry

12/07/20

explain where you would find the actual yield and the theoretical yield needed to calculate the percent yield of a reaction

Follows • 2

Answers •1

Chemistry

12/07/20

Given 3.4 grams of x compound with a molar mass of 85g and 4.2 grams of y compound with a molar mass of 48g How much of compound xy can be generated 2x + Y2 = 2xy

Follows • 2

Answers •1

Chemistry

12/06/20

ph of acetid acid and potassium hydroxide titration

Consider the titration of 17.4 mL of 0.454 M HCOOH (pKa=4.76) with 0.232 M KOH. What is the pH of 120% titration?

Follows • 2

Answers •1

Chemistry

12/06/20

pH of formic acid and its salt

An aqueous solution contains formic acid (pKs = 3.75) at 1.13 M and sodium formate (formic acid salt) at 2.41 M. What will be the pH if 2.35 grams of solid potassium hydroxide is added to a 200 ml... more

Follows • 2

Answers •1

Chemistry Ap Chemistry

12/06/20

How do you know that all the Pb(NO3)2 is used up at equilibrium?

The whole question: A saturated solution of lead iodate in pure water has a lead ion concentration of 4.0 * 10^-5 mole per liter at 20 degrees C. To 333 milliliters of a 0.120 molar Pb(NO3)2... more

Follows • 2

Answers •1

Chemistry Kenetics

12/05/20

I've been stuck on this question for a while now, any help is appreciated

Initial rate data was generated for the following balanced reaction at a temperature of 300 K.A (g) + 2B (g) → C (g) Experiment [A] (M) [B] (M) Initial rate (M/s) 1 0.10 0.10 1.6 x... more

Follows • 3

Answers •2

Chemistry

12/05/20

Calculate: The % w/v of NaCl present in the infusion. The % of stated content of NaCl.

An infusion stated to contain 0.95% w/v NaCl was diluted so that its Na content could be determined by flame photometry. The following dilutions were carried out:(i) 10 ml of the sample was diluted... more

Follows • 2

Answers •1

Chemistry

12/05/20

HNO3 and NH3 titration

Consider the titration of 27.8 mL of 0.447 M NH3 (Kb = 1.79 ×10-5) with 0.267 M HNO3. What is the pH of 100% titration?

Follows • 2

Answers •1

Chemistry

12/05/20

Solutions of sulfuric acid and lead (II) acetate react to form solid lead (II) sulfate and a solution of acetic acid.

If 10.0g of sulfuric acid and 10.0g of lead (II) acetate are mixed, calculate the number of grams of sulfuric acid, lead (II) acetate, lead (II) sulfate, and acetic acid present after the reaction... more

Follows • 2

Answers •1

Chemistry

12/05/20

What is the molarity of a solution prepared by diluting 125 mL of a 5.4 M solution to 275 mL?

Enter your answer with the proper number of significant figures.

Follows • 1

Answers •1

Chemistry

12/05/20

How many grams of NaNO3 are needed to prepare 125mL of a 1.75M solution?

Enter your answer with the proper number of significant figures.

Follows • 2

Answers •1

What is the expected osmotic pressure, in torr, of a 0.0100 M solution of NaCl in water at 25°C?

plese help me please

A 1.56g sample of copper reacts with oxygen to form 1.95g of the metal oxide. What is the empirical formula?

What would ∆H be for the reaction 9 A + 3 B → 6 C?

The reaction for the decomposition of dinitrogen monoxide gas to form an oxygen radical is: N2O(g) → N2(g) + O(g). If the activation energy is 250 kJ/mol and the frequency factor is 8.0 × 1011 s-1,

If 95.00 mL of 0.2500 M barium nitrate are combined with 150.00 mL of 0.1000 M lithium sulfate how many barium ions are in the resulting solution in units of millimoles ?

Please help with this question, I would appreciate if you could explain your work where it needs explaining.

Please help with this question, I would appreciate if you could explain your work where it needs explaining.

Assuming no change in temperature or pressure, how many liters of O2 would be needed to completely combust 4.0 liters of C4H6? 2 C4H6(g) + 11 O2(g) → 8 CO2(g) + 6 H2O(g)

Oxyacetylene (C2H2)(ΔH=227.4kJ/mole) combusts in oxygen (ΔH= 0.0 kJ/mole) to produce carbon dioxide ΔH= -393.5 kJ/mole) and water . Calculate ΔH for the reaction in kJ.

How many atoms are in 4.81 mol of pure aluminum?

CALCULATING pH QUESTION

pls help and show work

pls help and show answers

explain where you would find the actual yield and the theoretical yield needed to calculate the percent yield of a reaction

Given 3.4 grams of x compound with a molar mass of 85g and 4.2 grams of y compound with a molar mass of 48g How much of compound xy can be generated 2x + Y2 = 2xy

ph of acetid acid and potassium hydroxide titration

pH of formic acid and its salt

How do you know that all the Pb(NO3)2 is used up at equilibrium?

I've been stuck on this question for a while now, any help is appreciated

Calculate: The % w/v of NaCl present in the infusion. The % of stated content of NaCl.

HNO3 and NH3 titration

Solutions of sulfuric acid and lead (II) acetate react to form solid lead (II) sulfate and a solution of acetic acid.

What is the molarity of a solution prepared by diluting 125 mL of a 5.4 M solution to 275 mL?

How many grams of NaNO3 are needed to prepare 125mL of a 1.75M solution?

Still looking for help? Get the right answer, fast.

OR

J.R. S.

IXL

Rosetta Stone

Education.com

TPT

Vocabulary.com

ABCya

SpanishDictionary.com

Inglés.com

Emmersion

What is the expected osmotic pressure, in torr, of a 0.0100 M solution of NaCl in water at 25°C?

plese help me please

A 1.56g sample of copper reacts with oxygen to form 1.95g of the metal oxide. What is the empirical formula?

What would ∆H be for the reaction 9 A + 3 B → 6 C?

The reaction for the decomposition of dinitrogen monoxide gas to form an oxygen radical is: N2O(g) → N2(g) + O(g). If the activation energy is 250 kJ/mol and the frequency factor is 8.0 × 1011 s-1,

If 95.00 mL of 0.2500 M barium nitrate are combined with 150.00 mL of 0.1000 M lithium sulfate how many barium ions are in the resulting solution in units of millimoles ?

Please help with this question, I would appreciate if you could explain your work where it needs explaining.

Please help with this question, I would appreciate if you could explain your work where it needs explaining.

Assuming no change in temperature or pressure, how many liters of O2 would be needed to completely combust 4.0 liters of C4H6? 2 C4H6(g) + 11 O2(g) → 8 CO2(g) + 6 H2O(g)

Oxyacetylene (C2H2)(ΔH=227.4kJ/mole) combusts in oxygen (ΔH= 0.0 kJ/mole) to produce carbon dioxide ΔH= -393.5 kJ/mole) and water . Calculate ΔH for the reaction in kJ.

How many atoms are in 4.81 mol of pure aluminum?

CALCULATING pH QUESTION

pls help and show work

pls help and show answers

explain where you would find the actual yield and the theoretical yield needed to calculate the percent yield of a reaction

Given 3.4 grams of x compound with a molar mass of 85g and 4.2 grams of y compound with a molar mass of 48g How much of compound xy can be generated 2x + Y2 = 2xy

ph of acetid acid and potassium hydroxide titration

pH of formic acid and its salt

How do you know that all the Pb(NO3)2 is used up at equilibrium?

I've been stuck on this question for a while now, any help is appreciated

Calculate: The % w/v of NaCl present in the infusion. The % of stated content of NaCl.

HNO3 and NH3 titration

Solutions of sulfuric acid and lead (II) acetate react to form solid lead (II) sulfate and a solution of acetic acid.

What is the molarity of a solution prepared by diluting 125 mL of a 5.4 M solution to 275 mL?

How many grams of NaNO3 are needed to prepare 125mL of a 1.75M solution?

Still looking for help? Get the right answer, fast.

OR

J.R. S.

Assuming no change in temperature or pressure, how many liters of O2 would be needed to completely combust 4.0 liters of C4H6? 2 C4H6(g) + 11 O2(g) → 8 CO2(g) + 6 H2O(g)