1. 1 nanogram to microgram and mg. 2. 1 mg in micrograms and nanograms. 3. if...
1. 1 nanogram to microgram and mg.
2. 1 mg in micrograms and nanograms.
3. if 1 mole of Na+ and 500 mmoles of CL-. how many moles of NaCl could you make?
4. how many 10 /mu m^3 cells would fit in a 10 mm^3 tissue?
5. it takes 58.44 grams of Nacl in 1 liter of water to make 1 mole/liter nail solution. If you have 1 ml of this solution, how many grams of nacl are in that 1 ml?
Homework Answers
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1. 1 nanogram to microgram and mg.
2. 1 mg in micrograms and nanograms.
3. if...
3. What is the molarity when we have 0.75 moles of solute in 2.5 liters of...
3. What is the molarity when we have 0.75 moles of solute in 2.5 liters of solution? 4. We have 58.44 grams of NaCl in 2 liters of solution. What would be the molarity of the solution? 5. How many grams is 1 mole of CaCl? 6. If I need to make up IL of a 0.5M soln of CaCl, how many grams would I need? 7, Describe how you would make a 5% glucose solution. Glucose-C6H12O6 8. Calculate the...
Find the molarity of the following solutions: Molarity - mole/Liters 1 liter = 1000 ml pter...
Find the molarity of the following solutions: Molarity - mole/Liters 1 liter = 1000 ml pter 1) 2.5 moles of NaCl is dissolved to make 0.050 liters of solution. 2) 3.0 moles of AgCl is dissolved in enough water to make a 2.0 liter solution 3) 4.2 moles of lithium fluoride are dissolved in 2 liters of solution. 4) 18 grams of hydrochloric acid, HCl is dissolved to make 1 liter of solution. Stoichiometry 1. 2Na+2H,0 ® 2NaOH+H, a). How...
Find the molarity of the following solutions: Molarity = mole/Liters 1 liter - 1000 ml 1)...
Find the molarity of the following solutions: Molarity = mole/Liters 1 liter - 1000 ml 1) 2.5 moles of NaCl is dissolved to make 0.050 liters of solution 2) 3.0 moles of AgCl is dissolved in enough water to make a 2.0 liter solution 3) 4.2 moles of lithium fluoride are dissolved in 2 liters of solution. 4) 18 grams of hydrochloric acid, HCl is dissolved to make 1 liter of solution.
You need to make 1 liter of a 0.154 N NaCl solution, using NaCl which has...
You need to make 1 liter of a 0.154 N NaCl solution, using NaCl which has a f.w. of 58.44 and an assay value of 97.3%. How many grams of NaCl must you weigh out?
How many grams of NaCl (1 molar mass = 58.44 g/mol) are required to make 350...
How many grams of NaCl (1 molar mass = 58.44 g/mol) are required to make 350 mL of a 1.25 M NaCl solution
Concentrations of solute in solvent, whether in saturated solutions or not, can be expressed in many...
Concentrations of solute in solvent, whether in saturated solutions or not, can be expressed in many ways (molarity, molality, ppm, percent by mass, etc.). Molarity = moles of solute / liter of solution molality = moles of solute / kg of solvent ppm = mg solute / liter of solution ppb = microgram of solute / liter of solution %-by-mass = (grams of solute / grams of solution) x 100% To convert from %-by-mass to Molarity, assume 100g of solution,...
1) What pipetman would you use to drspen 600ul? 17ul? 70ul? 2) What size pipet (1,...
1) What pipetman would you use to drspen 600ul? 17ul? 70ul? 2) What size pipet (1, 5, 10, 25ml) would you use to dispense: 2ml? 8ml? 20ml? 3) Convert: a. 5 x 10 ml to ul b. 7 ml to ul c. 50 g/1 to mg/1 d. 0.4 mg/1 to mg/ml e. 75 mg/ml to ug/ul f. 10 M to mM g. 10 M to uM 4) Divide 2.5 x 107 by 103 5) Multiply 5.2 x 107 by 103...
2&3 only A power lifts 500 lb 6 ft off the ground. how much work has...
2&3 only
A power lifts 500 lb 6 ft off the ground. how much work has he performed?___ft-lb work =____kg-m work. How many calories of energy did he use to produce this work?____cal. If he performs this feat 11 times in 1 min. What is his power output?_____HP =_____W. A physician has ordered a 0.35 mg/kg of body weight drug dosage for a 215-lb patient to control his blood sugar levels. How large is each dose?____Atomic weights: Na = 25...
A solution contains 0.9% of Sodium Chloride. Calculate the number of particles that contribute to the...
A solution contains 0.9% of Sodium Chloride. Calculate
the number of particles that contribute to the osmotic pressure in
1 Liter of solution. (Mol wt: 58.5). Assume that the sodium
chloride is completely soluble and each mole of NaCl dissociates in
two ions (Na +& Cl) at this concentration.
Calculate the quantity of sodium chloride present in 1
liter of solution.
How many molecules are present in 1 liter?
How many ions (particles) are formed when 1 mole of
sodium...
Chapter 15 Determination of the Hardness of Water 3, A 100-mL. sample of hard water is...
Chapter 15 Determination of the Hardness of Water 3, A 100-mL. sample of hard water is titrated with the EDTA solution in Problem 2. The same amount of Mg' is added as previously, and the volume of EDTA required is 31.84 mL a What volume of EDTA is used in titrating the Ca" in the hard water? mL h How many moles of EDTA are there in that volume? moles c. How many moles of Ca are there in the...
3. What is the molarity when we have 0.75 moles of solute in 2.5 liters of solution? 4. We have 58.44 grams of NaCl in 2 liters of solution. What would be the molarity of the solution? 5. How many grams is 1 mole of CaCl? 6. If I need to make up IL of a 0.5M soln of CaCl, how many grams would I need? 7, Describe how you would make a 5% glucose solution. Glucose-C6H12O6 8. Calculate the...
Find the molarity of the following solutions: Molarity - mole/Liters 1 liter = 1000 ml pter 1) 2.5 moles of NaCl is dissolved to make 0.050 liters of solution. 2) 3.0 moles of AgCl is dissolved in enough water to make a 2.0 liter solution 3) 4.2 moles of lithium fluoride are dissolved in 2 liters of solution. 4) 18 grams of hydrochloric acid, HCl is dissolved to make 1 liter of solution. Stoichiometry 1. 2Na+2H,0 ® 2NaOH+H, a). How...
Find the molarity of the following solutions: Molarity = mole/Liters 1 liter - 1000 ml 1) 2.5 moles of NaCl is dissolved to make 0.050 liters of solution 2) 3.0 moles of AgCl is dissolved in enough water to make a 2.0 liter solution 3) 4.2 moles of lithium fluoride are dissolved in 2 liters of solution. 4) 18 grams of hydrochloric acid, HCl is dissolved to make 1 liter of solution.
1) What pipetman would you use to drspen 600ul? 17ul? 70ul? 2) What size pipet (1, 5, 10, 25ml) would you use to dispense: 2ml? 8ml? 20ml? 3) Convert: a. 5 x 10 ml to ul b. 7 ml to ul c. 50 g/1 to mg/1 d. 0.4 mg/1 to mg/ml e. 75 mg/ml to ug/ul f. 10 M to mM g. 10 M to uM 4) Divide 2.5 x 107 by 103 5) Multiply 5.2 x 107 by 103...
2&3 only
A power lifts 500 lb 6 ft off the ground. how much work has he performed?___ft-lb work =____kg-m work. How many calories of energy did he use to produce this work?____cal. If he performs this feat 11 times in 1 min. What is his power output?_____HP =_____W. A physician has ordered a 0.35 mg/kg of body weight drug dosage for a 215-lb patient to control his blood sugar levels. How large is each dose?____Atomic weights: Na = 25...
A solution contains 0.9% of Sodium Chloride. Calculate
the number of particles that contribute to the osmotic pressure in
1 Liter of solution. (Mol wt: 58.5). Assume that the sodium
chloride is completely soluble and each mole of NaCl dissociates in
two ions (Na +& Cl) at this concentration.
Calculate the quantity of sodium chloride present in 1
liter of solution.
How many molecules are present in 1 liter?
How many ions (particles) are formed when 1 mole of
sodium...
Chapter 15 Determination of the Hardness of Water 3, A 100-mL. sample of hard water is titrated with the EDTA solution in Problem 2. The same amount of Mg' is added as previously, and the volume of EDTA required is 31.84 mL a What volume of EDTA is used in titrating the Ca" in the hard water? mL h How many moles of EDTA are there in that volume? moles c. How many moles of Ca are there in the...
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