Your doctor prescribed eye drops for you to treat a certain condition. You obtain the eye drop liquid medication in a small bottle containing a total volume 15 ml. Your instructions were to apply 2 drops in each eye at night. Given that the volume of 1 drop is 0.05 ml. Calculate many days will the eye drop liquid medication last?

Your doctor prescribed eye drops for you to treat a certain condition. You obtain the eye drop liquid medication in a small bottle containing a total volume 15 ml. Your instructions were to apply 2 drops in each eye at night. Given that the volume of 1 drop is 0.05 ml. Calculate many days will the eye drop liquid medication last?

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter1: Introduction To Chemistry

Section: Chapter Questions

Problem 1.89PAE: 1.89 Imagine that you place a cork measuring 1.30cm4.50cm3.00cm in a pan of water. On top of this...

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1.89 Imagine that you place a cork measuring 1.30cm4.50cm3.00cm in a pan of water. On top of this cork, you place a small cube of lead measuring 1.15 cm on a side. Describe how you would determine if the combination of the cork and lead cube will still float in the water. Note any information you would need to look up to answer the question.
A chemist must prepare 225.mL of 55.0mM aqueous potassium permanganate KMnO4 working solution. He'll do this by pouring out some 0.0779molL aqueous potassium permanganate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the potassium permanganate stock solution that the chemist should pour out. Round your answer to 3 significant digits.
Suppose that you are doing an experiment as part of your Capstone Design Project. A glass vessel originally contains 100 mL of fresh water. Then water containing 1 g/mL of NaCl is poured into the vessel at a rate of 2 mL/min, and the mixture is allowed to leave at the same rate. After 10 minutes the process is stopped, and fresh water is poured into the vessel at a rate of 2 mL/min, with the mixture again leaving at the same rate. Find the amount of NaCl in the vessel at the end of an additional 10 min.
A chemist must prepare 275.mL of 25.0mM aqueous barium chlorate BaClO32 working solution. He'll do this by pouring out some 54.9mM aqueous barium chlorate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the barium chlorate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.
A chemist makes 570.mL of barium chloride BaCl2 working solution by adding distilled water to 60.0mL of a 0.318M stock solution of barium chloride in water. Calculate the concentration of the chemist's working solution. Be sure your answer has the correct number of significant digits.
A student dissolves 12.4g of ammonium nitrate (NH4NO3) in 200.g of water in a well-insulated open cup. She then observes the temperature of the water fall from 21.0°C to 16.9°C over the course of 7 minutes. NH4NO3(s) → NH+4(aq) + NO−3(aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to 2 significant digits. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. 1. Is this reaction exothermic, endothermic, or neither? 2.If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. = kJ 3.Calculate the reaction enthalpy ΔHrxn per mole of NH4NO3. = kJ/mol
Professor Gomez's dogJasper, is a very anxious little guy, so she baked him some treats that contain melatonin to help calm him down. The treats are quite small, and each one contains 150 of melatonin Jasper's veterinarian recommended he take milligrams of melatonin per of body weight per day Jasper weighs exactly 15 lbs. How many of the melatonin containing treats is he allowed to have in one day? Note : 2.20 lb=1 log
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A typical person has an average heart rate of 69.069.0 beats/min. Calculate the given questions. How many beats does she have in 5.05.0 years? How many beats in 5.005.00 years? And finally, how many beats in 5.0005.000 years? Pay close attention to significant figures in this question.
A chemistry student needs 5.00 g of acetic acid for an experiment. She has available 250. g of a 15.8% w/w solution of acetic acid in ethanol. Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button. Round your answer to significant digits.
Kindly answer the questions 1,2, and 3 in the picture posted
How do you figure out how to solve this question? The density of a liquid is determined by successively weighing 25, 50, 75, 100, and 125 mL of the liquid in a 250-mL beaker. If volume of liquid is plotted along the horizontal axis, and total mass of beaker plus liquid is plotted on the vertical axis: .a..The line will pass through the origin. .b..The slope of the line is independent of the identity of the liquid. .c..The y, or vertical, intercept is the weight of the empty beaker. .d..The slope of the line is 1.0. .e..The x, or horizontal, intercept is the negative value of the weight of the beaker.