If you calculated the concentration of β-carotene in your 3.50 mL sample to be 2.168 ×...
If you calculated the concentration of β-carotene in your 3.50 mL sample to be 2.168 × 10-6 M, how many grams of β-carotene are in your sample? The molar mass of β-carotene is 536.85 g/mole.
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If you calculated the concentration of β-carotene in your 3.50
mL sample to be 2.168 ×...
If you calculated the concentration of β-carotene in your 2.50 mL sample to be 2.389 ×...
If you calculated the concentration of β-carotene in your 2.50 mL sample to be 2.389 × 10 − 6 M, how many grams of β-carotene are in your sample? The molar mass of β-carotene is 536.85 g/mole.
erksheet 7-Rey 10 A 10.0 mL sample of sodium chioride solution that has a mass of...
erksheet 7-Rey 10 A 10.0 mL sample of sodium chioride solution that has a mass of 16.78 g is placed in an Solutions evaporating dish and evaporated to dryness. The residue has a mass of 6.55 g. Calculate the following concentrations for the NaCl solution mass/mass (m/m) percent mass/volume (m/v) percent malarity A 4.00 % (g/mL) KI solution has a volume of 65.0 mL. How many grams of KI are in the sample? How many grams of a 35% (...
How many grams of NaOH are in 175 mL of 3.50 M NaOH? Molar masses NaOH...
How many grams of NaOH are in 175 mL of 3.50 M NaOH? Molar masses NaOH 40.00 g/mol 0.613 grams 24, 500 grams 50.0 grams 24.5 grams 613 grams
Question 8 1 pts NAOH BOHO acetone d 0.791 benzaldehyde d 1.044 When doing part of...
Question 8 1 pts NAOH BOHO acetone d 0.791 benzaldehyde d 1.044 When doing part of the reaction for lab, how many grams of benzaldehyde (#4) would you need if you are trying to make a maximum theoretical yield of 10 grams of dibenzalacetone (#6)? Acetone: density = 0.791 g/mL and molar mass = 58.08 grams/mole Benzaldehyde: density - 1.044 g/mL and molar mass = 106.12 grams/mole Dibenzalacetone: molar mass = 234.29 grams/mole
2. A student titrates 30.5 mL of a 3.50 g/L monoprotic acid (HA) with 15.0 mL...
2. A student titrates 30.5 mL of a 3.50 g/L monoprotic acid (HA) with 15.0 mL of 0.10 M NaOH solution. a. Determine the concentration of to monoprotic acid (the ratio of the acid to base is 1:1). b. Determine the molar mass of the acid.
#14 determine the number of grams of MgCl2 are needed to make 3.50 liters of a...
#14 determine the number of grams of MgCl2 are needed to make
3.50 liters of a 1.25 Molar solution (molar mass of MgCl2 =
95.211g/mol)
#15 Find the volume of a 2.50 M NaOH solution needed to dilute
200.0 ml of a 0.05 M NaOH solution.
14. Determine the number of grams of MgCl2 are needed to make a 3.50 liters of a 1.25 Molar solution (molar mass of MgCl2 = 95.211 g/mol (Show your work below to receive credit)....
A 6.04 g sample of a solid containing Ni is dissolved in 20.0 mL water. A...
A 6.04 g sample of a solid containing Ni is dissolved in 20.0 mL water. A 5.00 mL aliquot of this solution is diluted to 100.0 mL and analyzed in the lab. The analyzed solution was determined to contain 6.88 ppm Ni . Determine the molar concentration of Ni in the 20.0 mL solution. *concentration= ? M Determine the mass, in grams, of Ni in the original sample. *mass= ? g Determine the weight percent of Ni in the sample....
Calculating Concentration Calculate the molarity of B-carotene if 9.00 x 103 ug of B-carotene (536.87 g/mol)...
Calculating Concentration Calculate the molarity of B-carotene if 9.00 x 103 ug of B-carotene (536.87 g/mol) is dissolved to form 20.00 mL of solution. Remember that molarity has units of (moles of solvent)/(Liter of solution). 2. Use correct Sig Figs and include units. 3. When we eat carrots or other fruits and vegetables that contain carotenes, only 17-459 of the carotenes are absorbed by our bodies. If you consumed 1325 ug of B-carotene, what is the mass range that could...
3. Using the number of grams of each element calculated in Problem #4, and the following...
3. Using the number of grams of each element calculated in Problem #4, and the following molar masses, calculate the number of moles of each of the three elements. Show your work. Mg 24.305 g/mole S 32.066 g/mole 16.000 g/mole What is the mole: mole: mole ratio of Mg:S:0? 70 4. An unknown compound is found to contain only magnesium, sulfur and oxyben. m. sulfur and oxygen. If it contains -3.3% magnesium and 30.7% sulfur, what would be the percentage...
1 pts Question 7 2 H NaOH EOH benzaldehyde d 1.044 acetone d 0.791 When doing...
1 pts Question 7 2 H NaOH EOH benzaldehyde d 1.044 acetone d 0.791 When doing part B of the reaction for lab, how many grams of acetone (#5) would you need if you are trying to make a maximum theoretical yield of 15 grams of dibenzalacetone (#6)? Acetone: density 0.791 g/mL and molar mass 58.08 grams/mole 1044 g/mL and molar mass 106.12 grams/mole Benzaldehyde: density Dibenzalacetone: molar mass 234.29 grams/mole
erksheet 7-Rey 10 A 10.0 mL sample of sodium chioride solution that has a mass of 16.78 g is placed in an Solutions evaporating dish and evaporated to dryness. The residue has a mass of 6.55 g. Calculate the following concentrations for the NaCl solution mass/mass (m/m) percent mass/volume (m/v) percent malarity A 4.00 % (g/mL) KI solution has a volume of 65.0 mL. How many grams of KI are in the sample? How many grams of a 35% (...
How many grams of NaOH are in 175 mL of 3.50 M NaOH? Molar masses NaOH 40.00 g/mol 0.613 grams 24, 500 grams 50.0 grams 24.5 grams 613 grams
Question 8 1 pts NAOH BOHO acetone d 0.791 benzaldehyde d 1.044 When doing part of the reaction for lab, how many grams of benzaldehyde (#4) would you need if you are trying to make a maximum theoretical yield of 10 grams of dibenzalacetone (#6)? Acetone: density = 0.791 g/mL and molar mass = 58.08 grams/mole Benzaldehyde: density - 1.044 g/mL and molar mass = 106.12 grams/mole Dibenzalacetone: molar mass = 234.29 grams/mole
2. A student titrates 30.5 mL of a 3.50 g/L monoprotic acid (HA) with 15.0 mL of 0.10 M NaOH solution. a. Determine the concentration of to monoprotic acid (the ratio of the acid to base is 1:1). b. Determine the molar mass of the acid.
#14 determine the number of grams of MgCl2 are needed to make
3.50 liters of a 1.25 Molar solution (molar mass of MgCl2 =
95.211g/mol)
#15 Find the volume of a 2.50 M NaOH solution needed to dilute
200.0 ml of a 0.05 M NaOH solution.
14. Determine the number of grams of MgCl2 are needed to make a 3.50 liters of a 1.25 Molar solution (molar mass of MgCl2 = 95.211 g/mol (Show your work below to receive credit)....
Calculating Concentration Calculate the molarity of B-carotene if 9.00 x 103 ug of B-carotene (536.87 g/mol) is dissolved to form 20.00 mL of solution. Remember that molarity has units of (moles of solvent)/(Liter of solution). 2. Use correct Sig Figs and include units. 3. When we eat carrots or other fruits and vegetables that contain carotenes, only 17-459 of the carotenes are absorbed by our bodies. If you consumed 1325 ug of B-carotene, what is the mass range that could...
3. Using the number of grams of each element calculated in Problem #4, and the following molar masses, calculate the number of moles of each of the three elements. Show your work. Mg 24.305 g/mole S 32.066 g/mole 16.000 g/mole What is the mole: mole: mole ratio of Mg:S:0? 70 4. An unknown compound is found to contain only magnesium, sulfur and oxyben. m. sulfur and oxygen. If it contains -3.3% magnesium and 30.7% sulfur, what would be the percentage...
1 pts Question 7 2 H NaOH EOH benzaldehyde d 1.044 acetone d 0.791 When doing part B of the reaction for lab, how many grams of acetone (#5) would you need if you are trying to make a maximum theoretical yield of 15 grams of dibenzalacetone (#6)? Acetone: density 0.791 g/mL and molar mass 58.08 grams/mole 1044 g/mL and molar mass 106.12 grams/mole Benzaldehyde: density Dibenzalacetone: molar mass 234.29 grams/mole
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