Please help I keep getting a whole number with no decimals when I should be getting...
Please help I keep getting a whole number with no decimals when I should be getting 15.631mL.
Water was drained from a buret between the 0.12- and 15.78 mL marks. The apparent volume was 15.78- 0.12 = 15.66 mL. Measured in the air at 25°C, the mass of water delivered was 15.569 g. What is the true volume?
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Please help I keep getting a whole number with no decimals when
I should be getting...
I keep getting a ridiculously large number that I know is not correct. Any help breaking...
I keep getting a ridiculously large number that I know is not
correct. Any help breaking down and solving this question would be
greatly appreciated.
Post-Lab Questions 1. What is the average experimental volume per mole of carbon dioxide calculated for sodium carbonate and sodium bicarbonate? Data Sheet Table 3: Amount of H20 Displaced for Each Trial-Grams of Solute Used Trial Barometric Pressure (atm) Temperature (°C) Mass of Chemical (g) Water Displaced (mL) Trial 1 NaHCO3 1.0123 atm 21.1°C 10g...
HELP!!! I keep getting this question wrong and I dont know why! The answer I get...
HELP!!! I keep getting this question wrong and I dont know why! The answer I get is 0.011m^3?! Because gasoline is less dense than water, drums containing gasoline will float in water. Suppose a 300-L steel drum is completely full of gasoline. What total volume of steel can be used in making the drum if the gasoline-filled drum is to float in fresh water? Express your answer using two significant figures.
So this is supposed to be the formula but I keep getting it wrong: "Equivalent millimoles...
So this is supposed to be the formula but I keep getting it
wrong:
"Equivalent millimoles HCl/mg sample = ( (concentration HCl in
mmol/mL)(Volume HCl in mL) - (concentration NaOH in mmol/mL)(Volume
NaOH in mL) ) / ( (1000 mg/g)(mass antacid sample in grams ) )"
My molarity HCl: 0.366
My molarity NaOH: 0.099
Part IIC Scoring Scheme: 3-3-2-1 Based upon the molarities of the standardized HCl and standardized NaOH, and the volumes of each added to analyze the antacid...
I need help with E. I keep getting 393.21 3) Calculate the percent yield with following...
I need help with E. I keep getting 393.21
3) Calculate the percent yield with following steps. (Assume that you obtain 0.4 g benzoic acid at the end of the reaction). (Show your calculations) (5 pts) a) Calculate the number of moles for each reagent listed below i) Bromobenzene (0.7 g) ii) Mg (0.15 g) iii) Dry ice (3 g) iv) 6 M HCl (5 mL) b) What is the limiting reagent? c) Calculate the expected number moles for the...
Can someone please help me? I keep getting stuck, I don’t know how to get log...
Can
someone please help me? I keep getting stuck, I don’t know how to
get log on the other side of the equation. I can easily follow
another tutorial, but I can’t figure out the ending and what step I
need to do to get it! This was previously answered by someone else
and was wrong. I need to know HOW to work it out please!
Given the measured cell potential, Ecel, is-0.3555 V at 25 C in the following...
Can someone please help me with this with step by step clarification. I keep getting the...
Can
someone please help me with this with step by step clarification. I
keep getting the wrong answers! Thank you!!
3. 0/1 points | Previous Answers SerCP11 1.5.P.028.MI. My Notes A house is 58.0 ft long and 32 ft wide, and has 8.0-ft-high ceilings. What is the volume of the interior of the house in cubic meters and cubic centimeters? Use the given length, width, and height to calculate the volume and then convert to the units asked for. m3...
I have an idea on how to do it but not entirely sure help? I believe...
I have an idea on how to do it but not entirely sure
help?
I believe it's off the information based on this I'm
not to sure
Name: Molarity of Commercial Vinegar (multiply by the dilution factor) Percent (mass/volume) of acetic acid in commercial vinegar com lg Solute) TV FTML Solutel G. Questions de Ci u lean: Lullam fuam dhe tin af Delivered (mL) T+TZ + 3 Average Volume of NaOH (mL) Calculated molarity of diluted vinegar solution: Average Volume...
Please answer part 1 and 2. On part 2, I keep getting the wrong sig figs...
Please answer part 1 and 2. On part 2, I keep getting the wrong
sig figs please make sure they are correct. Thank you!
Part 1:
Part 2:
A chemist dissolves 669. mg of pure sodium hydroxide in enough water to make up 170. mL of solution. Calculate the pH of the solution. (The temperature of the solution is 25 °C.) Be sure your answer has the correct number of significant digits. x 6 ? Complete the following table, which...
I need help solving this, I'm not sure what equation to even use. could I get...
I need help solving this, I'm not sure what equation
to even use. could I get help with parts: a,b,c,d.
19) Bird bones have air pockets in them to reduce their weight-this also gives them an average density significantly less than that of the bones of other animals. Suppose an ornithologist weighs a bird bone in air and in water and finds its mass is 45 g and its apparent mass when submerged is 3.6 g. The bone surface is...
Please I need help with number 54 and 61 please An aqueous NaCl solution is made...
Please I need help with number 54 and 61 please
An aqueous NaCl solution is made using 112 g of NaCl diluted to a total solution volume of 1.00 L. Calculate the molarity, molality, and mass percent of the solution. (Assume a density of 1 08 g/mL for the solution.) An aqueous KNO_3 solution is made using 72.5 g of KNO_3 diluted to a total solution volume of 2.00 L. Calculate the molarity, molality, and mass percent of the solution....
I keep getting a ridiculously large number that I know is not
correct. Any help breaking down and solving this question would be
greatly appreciated.
Post-Lab Questions 1. What is the average experimental volume per mole of carbon dioxide calculated for sodium carbonate and sodium bicarbonate? Data Sheet Table 3: Amount of H20 Displaced for Each Trial-Grams of Solute Used Trial Barometric Pressure (atm) Temperature (°C) Mass of Chemical (g) Water Displaced (mL) Trial 1 NaHCO3 1.0123 atm 21.1°C 10g...
So this is supposed to be the formula but I keep getting it
wrong:
"Equivalent millimoles HCl/mg sample = ( (concentration HCl in
mmol/mL)(Volume HCl in mL) - (concentration NaOH in mmol/mL)(Volume
NaOH in mL) ) / ( (1000 mg/g)(mass antacid sample in grams ) )"
My molarity HCl: 0.366
My molarity NaOH: 0.099
Part IIC Scoring Scheme: 3-3-2-1 Based upon the molarities of the standardized HCl and standardized NaOH, and the volumes of each added to analyze the antacid...
I need help with E. I keep getting 393.21
3) Calculate the percent yield with following steps. (Assume that you obtain 0.4 g benzoic acid at the end of the reaction). (Show your calculations) (5 pts) a) Calculate the number of moles for each reagent listed below i) Bromobenzene (0.7 g) ii) Mg (0.15 g) iii) Dry ice (3 g) iv) 6 M HCl (5 mL) b) What is the limiting reagent? c) Calculate the expected number moles for the...
Can
someone please help me? I keep getting stuck, I don’t know how to
get log on the other side of the equation. I can easily follow
another tutorial, but I can’t figure out the ending and what step I
need to do to get it! This was previously answered by someone else
and was wrong. I need to know HOW to work it out please!
Given the measured cell potential, Ecel, is-0.3555 V at 25 C in the following...
Can
someone please help me with this with step by step clarification. I
keep getting the wrong answers! Thank you!!
3. 0/1 points | Previous Answers SerCP11 1.5.P.028.MI. My Notes A house is 58.0 ft long and 32 ft wide, and has 8.0-ft-high ceilings. What is the volume of the interior of the house in cubic meters and cubic centimeters? Use the given length, width, and height to calculate the volume and then convert to the units asked for. m3...
I have an idea on how to do it but not entirely sure
help?
I believe it's off the information based on this I'm
not to sure
Name: Molarity of Commercial Vinegar (multiply by the dilution factor) Percent (mass/volume) of acetic acid in commercial vinegar com lg Solute) TV FTML Solutel G. Questions de Ci u lean: Lullam fuam dhe tin af Delivered (mL) T+TZ + 3 Average Volume of NaOH (mL) Calculated molarity of diluted vinegar solution: Average Volume...
Please answer part 1 and 2. On part 2, I keep getting the wrong
sig figs please make sure they are correct. Thank you!
Part 1:
Part 2:
A chemist dissolves 669. mg of pure sodium hydroxide in enough water to make up 170. mL of solution. Calculate the pH of the solution. (The temperature of the solution is 25 °C.) Be sure your answer has the correct number of significant digits. x 6 ? Complete the following table, which...
I need help solving this, I'm not sure what equation
to even use. could I get help with parts: a,b,c,d.
19) Bird bones have air pockets in them to reduce their weight-this also gives them an average density significantly less than that of the bones of other animals. Suppose an ornithologist weighs a bird bone in air and in water and finds its mass is 45 g and its apparent mass when submerged is 3.6 g. The bone surface is...
Please I need help with number 54 and 61 please
An aqueous NaCl solution is made using 112 g of NaCl diluted to a total solution volume of 1.00 L. Calculate the molarity, molality, and mass percent of the solution. (Assume a density of 1 08 g/mL for the solution.) An aqueous KNO_3 solution is made using 72.5 g of KNO_3 diluted to a total solution volume of 2.00 L. Calculate the molarity, molality, and mass percent of the solution....
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