the pH of a cleaning solution with a [H3O*]
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- In a neutral solution, the [H*] is : * 1.0x10-14M zero 1.0×107M O 1.0x10-7MWhat is the pH of a cleaning solution with a [H3O*] = 7.4 x 10-10 м НзО"? А. 7.4 В. 7.13 C. 8.13 D. 9.00 E. 9.13Based on the Henderson-Hasselbalch equation (shown below), calculate the pH when half of a solution of acetic acid is dissociated to acetate (the pKa of acetic acid is 4.76). A. 1.00 B. 3.76 C. 4.76 D. 5.76
- Nathan wants to take 50mg of Phenergan for his nausea. Phenergan comes packaged as 12.5mg per 2tsp. How many tsp of Phenergan should Nathan take?What is the concentration in % (w/v) of a solution prepared from 50.0 g NaCl and 2.5 L of water? A. 5.0 % B. 2.0 % O C. 0.020 % D. 0.050 % E. 0.50 %If 4.00 L of ethyl alcohol at 18.0 ⁰C is exposed to a temperature of 25.0 ⁰C, what is the resulting volume? (Alcohol: β = 1100x10⁻⁶ / ⁰C) * a. 4.03 L b. 4.31 L c. 0.308 L d. 0.0308 L
- A patient is prescribed 0.151 g of Lidocaine intravenously. The lidocaine is available as a 12 mg/mL solution. How many mL must be administered?If a patient weighing 175 lb is to receive an initial daily IM dosage of procainamide HCI (500 mg/mL vial) of 50 mg/kg to be given in divided doses every 3 hours. How many milliliters should each injection contain? O a. 3.98 mL O b. 8.23 mL O C. 0.49 mL O d. 0.99 mL O e. 1.87 mLBased on the Henderson-Hasselbalch equation (shown below), calculate the pH when the ratio of acetic acid to acetate is 10 to 1 (the pKa of acetic acid is 4.76). A. 1.00 B. 3.76 C. 4.76 D. 5.76
- What is the concentration in % (w/w), of a solution prepared by mixing 50.0 g NaCl and 150.0 g water? A. 0.250 % B. 33.3 % C. 40.0 % D. 25.0 % E. 3.00 %Antacid tabletAluminum hydroxide 325 mgMannitol 812 mgSodium saccharin 0.4 mgSorbitol (10% w/v sol’n) 32.5 mgMagnesium stearate 35 mgMint flavor concentrate 4 mgBatch size: 150,000 tabletsHow much mannitol is needed for the batch size?a. a.12.2 kgb. 121.2 kgc. 121.8 kgd. 1218 kgDigoxin 0.125 mg is ordered for a patient who is having trouble swallowing. The bottle of digoxin elixir reads 0.5 mg/2mL. How much would you give?