10/31/21

How to translate this signa?
tab i SL p.c. x 2 wk. for HTN
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10/31/21

The signa of a prescription is "2 tab qid for 1 month" the patient bought 80 tablets and comes back after 15 days.
Solve for the percent compliance rate and answer up to the 2nd decimal place.
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10/31/21

If the dose of a liquid medicine is 1/2 tsp q 8 h. How many days will a 120 ml liquid medicine will last?
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10/31/21

Using heat of fusion
Calculate the amount of heat needed to melt 106. g of solid octane (C8H18) and bring it to a temperature of 118.8 C. Round your answer to 3 significant digits.
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10/30/21

interconverting atmposheres and torr
The ocean pressure at the depth of the Titanic wreck is ×3.04104mmHg. Calculate the ocean pressure in atm and torr. Round each of your answers to 3 significant digits. 
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10/30/21

Answer the following questions based a reaction between 80.0 g of sodium hydroxide and 90.0 g of anhydrous calcium chloride

How many moles of the product compound containing calcium will be made from the given mass of sodium hydroxide?How much of the excess reagent (in g) remains after the reaction is complete?Assuming... more
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10/30/21

pH solution calculation

Calculate the pH of a solution prepared by adding 20.0mL of 0.25M acetic acid with 2.0mL of 0.75M potassium hydroxide solution. in consideration of the Henderson-Hasselbalch equation, what would... more
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10/30/21

Calculate the pH, and [H+] and [OH-] concentration

Calculate the pH and [H+] and [OH-] concentration for a solution prepared by mixing 20.0mL of 0.25M acetic acid and 10.0mL of 0.25M sodium acetate.
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10/29/21

What temperature (in °C) did an ideal gas shift to if it was initially at -22.5 °C at 4.33 bar and 35.0 L and the pressure was changed to 8.71 bar and the volume changed to 15.0 L?
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10/29/21

Honors High School Chemistry
What is the mass of CO2 (carbon dioxide) and H2O (water) formed from the reaction of 1 mole each of n-pentane, n-hexane, n-heptane, and n-octane with an excess of O2 (oxygen gas)? Assume 100%... more
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10/29/21

ideal equation of state
Dinitrogen monoxide gas is collected at 32.0°C in an evacuated flask with a measured volume of 35.0L. When all the gas has been collected, the pressure in the flask is measured to be 0.340atm .
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10/29/21

Using heat of fusion or vaporization to find the heat needed to melt or boil a substance
Calculate the amount of heat needed to boil 37.6g of ethanol (CH3CH2OH), beginning from a temperature of −59.7°C. Round your answer to 3 significant digits. Also, be sure your answer contains a... more
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10/29/21

Calculate the frequency (in s–1) of a gamma ray photon that has an energy of 3.33 x10–13 J
Calculate the frequency (in s–1) of a gamma ray photon that has an energy of 3.33 x10–13 J
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10/29/21

interconverting atmospheres and torr
The partial pressure of carbon dioxide in the atmosphere is 0.000314 atm. Calculate the partial pressure in mmHg and torr. Round each of your answers to 3 significant digits. 
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10/29/21

When the following redox reaction, MnO4- + Zn = Mn2+ + Zn2+ is balanced, the number of electron/s transferred is ______
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10/29/21

Quantifying Reactants and Products. Using a balanced equation
F(frame) = 1 S(seat)=1 3W (wheels) =3 G(gears) = 1 2P(pedals) =2 FSW3GP2Quantifying Reactants and Products.If the supplier sends only 500 pedals one week,... more
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10/29/21

Is the mass of calcium chloride the same as the mass of anhydrous calcium chloride? I'm confused.
Answer the following questions based a reaction between 80.0 g of sodium hydroxide and 90.0 g of anhydrous calcium chloride.Write a balanced chemical equation representing this reaction.How many... more
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10/29/21

How Much Hydrogen?
Alkali metals react violently with water. How much Hydrogen gas (in g) is produced when 10.0 g of sodium reacts with excess water according to the following equation?2Na + 2H2O ----> 2NaOH + H2
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10/28/21

Can someone please help me?

For the following problems, I had to refer to the reaction 2NH3 (g) ↔ N2 (g) + 3H2 (g), and ΔH = 92.2 kJ.1. What will be the effect on the concentration of H2 if the temperature decreases? A.... more
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10/28/21

Chemistry Problem
In a 59.0-g aqueous solution of methanol, CH4O, the mole fraction of methanol is 0.350.What is the mass of each component? 
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10/28/21

identifying molecular forces
What kind of intermolecular forces act between a chloramine NH2Cl molecule and an ammonia molecule?
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10/28/21

What acid will react with strontium hydroxide to produce strontium chloride in a neutralization reaction?
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10/28/21

How many molecules of sucrose (table sugar), C12H22O11, dissolved in 450.0 g of water are needed to make a 1.81 m solution?
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10/28/21

Calculate the molality of C2H5OH in a water solution that is prepared by mixing 50.0 mL of C2H5OH with 112.7 mL of H2O at 20°C. The density of the C2H5OH is 0.789 g/mL at 20°C.
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10/28/21

A solution containing 306.5 g of Mg(NO3)2 per liter has a density of 1.114 g/mL. What is the molarity of the solution ?
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