Calculate the density of the unknown metal. Choose the answer with the correct number of significant figures.  a.9.0 g mL-1 b.8.95 g mL-1 c.8.9 g mL-1 d. 8.951 g mL-1

Q: How many grams of NaNO, is needed to prepare an aqueous solution of 170 mL with a pH of 8.54? (For…

A: Consider the initial concentration of NO2- to be C and the reaction can be depicted as; Here, x=…

Q: During a titration experiment, 250 mL of a 3M solution of HCI is titrated with 5M NAOH. What volume…

A: The volume of the base is determined by equation (1) shown below. MNaOHVNaOH=MHClVHCl ...... (1)

Q: Find the pH of 0.005 M leucine hydrochloride(H2L+ ) ?2?+, ??1 = 4.70 × 10−3 , ??2 = 1.80 × 10−10 a.…

A: Welcome to bartleby !

Q: Determine the pH of an HNO2 solution (for which Ka= 4.6x10^-4) of each of the following…

A: Given that the Ka of HNO2 is 4.6×10-4. The Ka is very small. So, HNO2 is a weak acid and undergoes…

Q: e. 2.0 x 108 M 1. The pH of a solution is 4.80. What is the concentration of hydroxide ions in this…

A: Since, pH value measure the acidity or basicity of the solution or compound. If pH > 7 then…

Q: Benzoic acid has a K, of 6.46 (10 5). If I have a 1.668(10) molar solution of benzoic acid, what is…

A:

Q: a 12.1 3- What was the pH of the solution that result from titration of 25.0 ml of 0.5 M solution of…

A: 3) we have to calculate the pH of the solution after HCl is added to the weak base

Q: A. What is the pH of 8.3 × 10-³ M HC1? pH= B. What is the pH of 8 × 10–8 M HCI? pH=

A: Since HCl is strong acid so it completely dissociate and  pH = -log[H+]

Q: he solution of ash of Mg (ash is formed when Mg reacts with oxygen gas) when added to water is…

A: The solution formed is ---> Basic ---> option(b)

Q: 10. If the pH of a solution is 6.6, determine the hydroxide ion concentration. A. 1.00 x 10-7 M B.…

A: We need to find hydroxide ion concentration in solution.

Q: The pH of normal blood is 7.4. The pH of a diabetic's blood was determined to be 7.8. Which…

A: The solution which have pH less than 7 is called solution . the solution which have pH of greater…

Q: The pH of a 0.063 M solution of a weak acid is 3.95. What is the value of Ka for this acid. A. 2.5 x…

A: Interpretation: The pH of a 0.063 M solution of a weak acid is 3.95. The value of Ka for this acid…

Q: 11. Which pH change represents a 100 fold decrease in the hydronium ion concentration? C. pH 10 to…

A: 11. Given that , The no. Of folds of decrease in hydronium ion concentration is 100

Q: QUESTION 22 The pOH of a solution is 5.50 at 25 °C. What is its hydronium ion concentration? O-3.2 x…

A: Given,pOH of a solution = 5.50 at 25 0C

Q: 3. Solution A has a hydronium ion concentration of 3.8 X 10-8 M. Solution B has a hydro- nium ion…

A:

Q: What is the hydronium ion concentration of an acid rain sample that has a pH of 3.50? A. 10.85 M B.…

A: Since pH = -log[H3O+]  where [H3O+] = concentration of hydronium ion (i.e H3O+ ) Since pH = 3.5

Q: Question 2 2 pts Question 3 1 pt Question 4 2 pts Question 5 1 pt Question 6 2 pts Question 7 1 pt…

A: pH is the measure of acidity in aqueous solution. The small concentrations of protons are expressed…

Q: After acing chemistry&121, you get a job in the chemistry lab and must prepare a nitric acid…

A: Interpretation -  To determine the milliliters of stock solution and also find the pH of the new…

Q: A solution with a pOH of 11.70 has an [H+] of a. 5.0 × 10−3 M.b. 3.2 × 10−4 M.c. 2.0 × 10−12 M. d.…

A: Given data, pOH of the solution =11.70

Q: 8. A 0.0250L solution of HCL is neutralized by 0.0780L of an unknown Mg(OH)2 solution. Also 0.050L…

A: The objective of this question is to find the concentration of the HCl solution. We can do this by…

Q: What are the major and minor species in an aqueous solution of _____? • hydrofluoric acid • nitric…

A: Electrolytes are species that dissolves in solution and conducts electricity. Strong electrolytes…

Q: The OH ion concentration of a blood sample is 2.6 x 10 M. What is the pH of the blood? blood O a.…

A: pH  =  - log [ H3O+ ]  pOH  =  - log [ OH- ]  pH  +  pOH   = 14

Q: The pH of a popular bleach brand is 12.2; what is its hydronium ion concentration? O A. 6.3 x 10-13…

A: We know that, pH can be expressed as the negative logarithm of hydronium ion concentration. i.e.…

Q: ndicate whether the solutions listed below are acidic, basic, or neutral.   pH = 2.13…

A: For acidic species, pH < 7,For neutral species, pH = 7, and for basic species, pH > 7.

Q: What is the pH of a solution of 50.00 ml of 0.07500M hydroxyacetic acid, K, = 1.48 x 10, after the…

A: Volume of Hydroxyacetic acid (HA) = 50.0 mL Molarity of Hydroxyacetic acid (HA) = 0.07500 M Ka of HA…

Q: The pOH of a solution 5.50 M is 5.50. What is its hydroxide-ion concentration? 3.2 x 10-5 M 3.2 x…

A: POH of solution are as follows:

Q: H+ concentration

A:

Q: After acing chemistry&121, you get a job in the chemistry lab and must prepare a nitric acid…

A:

Q: 9. Which of the following solutions for a weak acid at equilibrium would have the largest pH? d. 3.2…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 26. If the concentration of hydronium ion in an aqueous solution of sulfuric acid is 7.96 × 10-2 M,…

A:

Q: 3. What is the pH of an aqueous solution when the concentration of hydrogen ion is 6.5 x 10-5 M?…

A: pH :-  The negative logarithm to the base 10 of hydrogen ion concentration expressed in mol/L of a…

Q: 0.100 moles of each substance is dissolved in 1.0 L of water. Decide if each is an acid or a base…

A:

Q: A solution of HCIO4 was found to have a pH of 0.14. What is the concentration of HCIO4? a. 7.2 x…

A: HClO4 solution has a pH of 0.14 .We have to calculate the concentration of HClO4 solution .

Q: The pH of a human blood sample is 7.30. What is concentration of OH- in blood? a. 5.01 ×× 10-8 M…

A:

Q: 7. Select the answer that best describes an aqueous solution made from sodium nitrate (NaNO3).  a.…

A:

Q: 5- What is the pH at the equivalence point in the titration of 100.0 mL of 0.20 M ammonia (NH3) with…

A: In Question-5, first we will determine the concentration of ammonium salt which is formed after the…

Q: 2. A 0.10 M solution of HF is 8.0% ionised. What is the K.? A. 6.4 x 104 B. 8.8 x 104 C. 6.95 x 104…

A:

Q: What is the concentration of hydroxide ions in a solution containing 2.5 x 10-5 M of hydronium ions…

A: Given,  Concentration of hydronium ion [H3O+] = 2.5 × 10^-5 M Concentration of hydroxide ion [OH-]=…

Q: What is the [H3O*], [SO32], and pH of 0.054 M H₂SO3? (Kat = 1.54 x 102, Ka2 = 1.02 x 107) A. [H3O*]…

A: H2SO3 is a weak diprotic acid. One mole of H2SO3 can liberate 2 H+ ions. The 1st dissociation…

Q: A solution has a hydroxide concentration of 1 x 10-3 M. We would classify that solution as X 24) a.…

A:

Q: a. Calculate the molar concentration of a sodium hydroxide solution if 40.00 mL of this solution…

A: a. Given information,    NaOH volume (V1) = 40.00 mL    NaOH molarity (M1) = ?     HCl volume (V2) =…

Q: Identify if the following molecule is a strong acid, strong base, weak acid or a weak base. Sulfuric…

A: Strong acid or Strong base Strong acid or Strong base are molecules that undergoes complete…

Q: what is the total concentration of H+ ions in ann HCL 0.025 M solution?

A: What is the total concentration of H+ ions in an HCl of  0.025 M solution?

Q: Kw for water at 100 degrees celsius is 49 x 10^-14. Calculate the concentration of hydroxide ions in…

A: Given Kw = 49 × 10-14 H2O ----------> H+ + OH- Kw = [H+] [OH-]

Q: 7. Cite at least 3 examples of bases. b. a. C. 8. What is a substance that is capable of donating a…

A: Acid and base I) Acid: acid are those substances which produces a proton [H+] when dissolved in…

Q: B. What is the hydroxide ion concentration, [OH-], in an aqueous solution with a hydrogen ion…

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.