Be sure to answer all parts. Calculate the concentration of [H3O+] ions in a 0.52 M NaOH solution.            ×10           M (Enter your answer in scientific notation.)

A 450.0 mL solution contains 0.42 M KCIO. What is the pH? Ka (HCIO) = 2.90 x 10^-8. Report your answer with two decimal places.

1. (1 point) The [H+] of coffee is about 1 x 10. Its pH is 2. (1 point) The [OH-] of baking soda is about 1 x 10. Its pH is 9. The [H+] is 3. (4 points) Balance these equations by putting the number coefficients to the left of each product or reactant. If no number is needed (coefficient = 1), then leave that space blank. Al + O2 → Al2O3 а. NażCO3 + HCI → NaCl + CO2 + H20 C3H8 + O2 → CO2 + H2O с. d. CSH12 + O2 → CO2 + H2O 4. (1 point) How much does 2 moles of NaBr weigh? on's irtday pa There West oute, Kelvins (1 point) Caffeine has a molecular weight of 194 g/mole. If I drink a Venti coffee from Starbucks every day, I have consumed 156g of caffeine in a year! How many moles of caffeine have I consumed on my $967.25 of coffee in a year? 5. to hand-boil an esg in a microwave. The egg was 276K and I ATM. Imicrowaved it until the internal

Using the constant below, calculate the molar concentration (M) of acid H3O* in solution if the concentration of OH- is 3.4 x 10-5. Kw = 1.0 × 10-14 M²= [H3O*][OH]. %3D O a) 2.9 x 10-10 O b) 2.0 x 10-10 O) 3,4 x 109 d) 2.4 x 10-10 e) 3.4 x 109

Strong Acids; Calculate pH [HA]o [H;O"] pH Step 1 Calculate [H30"] based on the fact that strong acids react completely with water. Step 2 Calculate the pH using the equation: pH = -log [H;O¯] What is the pH of a 1.73×10M solution of the strong acid HCIO,? HCIO,(aq) + H2O(t) → C10,(aq) + H30*(aq) [HCIO4]0 = 1.73×10-5 Submit What is the concentration of hydronium ion following reaction between the acid and water? Submit Calculate the pH of the solution based on the solution to the previous question (shown below). [H;O*] = 1.73x10-5 M

What is the ratio of bicarbonate ion to carbonic acid ([HCO−3]/[H2CO3])([HCO3−]/[H2CO3]) in blood serum that has a pHpH of 7.40?  Express your answer using three significant figures.

I Review | Constants | Periodic Table Learning Goal: Part A To calculate pH and use it as a measure of acidity. The pH expresses the molar concentration of hydronium ions in an aqueous solution on a logarithmic scale: What is the pH of an aqueous solution with [H30+] =2x10-14 M? Express the pH numerically using one decimal place. pH = -log[H3O+] • View Available Hint(s) [H3O+] = 10-pH As pH decreases, acidity increases. As pH increases, acidity decreases. • Acidic solution: pH 7 pH = Submit Part B Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid. What is the molar concentration of H3O+ in a cola that has a pH of 3.120? Express your answer with the appropriate units. • View Available Hint(s) [H3O*] = Value Units Submit

Br₂, NaOH 1. N H (pH <7) 2. 23 25 24

$ 4 [Review Topics] [References] Calculate the [OH-] of each of the following solutions at 25°C. Identify each solution as neutral, acidic, or basic. Also calculate the pH and pOH of each of these solutions. [+] = 1.0 × 107 M [OH-] = The solution is pH = pOH = b. [H] = 9.8 x 10-16 M [OH-] = The solution is pH = pOH = 000 R F Submit Answer a. F4 % 5 Show Hint T G FS ^ Retry Entire Group 9 more group attempts remaining 6 v Y M MacBook Air F6 M H 87 & U J * 00 8 ( 9 K O BORS v 1 O L F10 P DIO 1108 chat A - 4) Previous F11 SAVAGE X FENTY... + A = C. 11 Next Save and Exit Show All } delet

Four solutions of an acid dissolved in water are sketched below, as if under a microscope so powerful individual atoms could be seen. The same volume of solution is shown in each sketch. Rank the solutions by the strength of the dissolved acid. That is, select 1 under the solution of the strongest acid, 2 under the solution of the next strongest acid, and so on. Note: =H,0 Solution 1 Solution 2 (Choose one) (Choose one) Solution 3 Solution 4 Submit Assignment Continue 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility MacBook Air DII DD 吕0 F10 FB FO F6 F7 F3 F4 F5 F2 %23 $4 1. 3. 4. 7 8.