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25. The density of copper is about 8.96 g/mL. This means that a certain mass of...
Calculate the mass of copper in grams (density = 8.96 g/cm3) with the same volume as...
Calculate the mass of copper in grams (density = 8.96 g/cm3) with the same volume as 100.0 grams of gold (density = 19.31 g/cm3).
Please make your hand write clear thank you d.- Determine the density (in g/mL) of a...
Please make your hand write clear thank you
d.- Determine the density (in g/mL) of a substance that weighs 0.695 Ib and occupies a volume of 3.4 qt. e. found in a room to be 5.7 x 10' mg/cm. How many grams of CO are present in the room if the rooms dimensions measure 3.5 m x 3.0 m x 3.2 m? A cylindrical piece of metal is 2.03 inches high, has a diameter of 17.0 mm wide, and weighs...
This reaction asks for dissolving 0.85 g of kl to 1.2 mL of water. If the...
This reaction asks for dissolving 0.85 g of kl to 1.2 mL of water. If the measured mass is 0.98 g of KI, what is the volume of water necessary to prepare a solution with the same concentration than in the procedure? a 1.8 ml b. 1.1 mL c. 1.2 mL d. 1.4 ml
You are asked to determine the mass of a piece of copper using its reported density...
You are asked to determine the mass of a piece of copper using its reported density 8.96g/mL, and a 150-mL graduated cylinder. First, you add 105mL of water to the graduate cylinder, then you place the piece of copper in the cylinder and record a volume of 137mL. Which of the following is the correct mass of the copper reported with the correct number of significant figures? A. 3.5x10^-3 g B. 287g C. 2.9x10² g D. 3.48x10^-3 g E. 286.72g
Write the balanced NET ionic equation for the reaction when copper(II) sulfate and ammonium hydroxide are mixed in aqueous solution. If no reaction occurs, write only NR.
8 Write the balanced NET ionic equation for the reaction when copper(II) sulfate and ammonium hydroxide are mixed in aqueous solution. If no reaction occurs, write only NR. 9 In the reaction between FeCl3 and NaOH, the spectator ions are 10 Convert the concentration of 0.700 M Na2SO4 to g/mL 11 How many mililiters of water should a chemist add if they want to prepare an 0.200 M aqueous solution with 30.2 g of NaCI ? Assume the density of the resulting solution...
Question 3 The volume of the nucleus of a carbon atom is about 9.9x1029 mL The molar mass of carbon is 12.00 g mo...
Question 3 The volume of the nucleus of a carbon atom is about 9.9x1029 mL The molar mass of carbon is 12.00 g mol. What is the density of the carbon nucleus? 08.25x10 g/mL o 119x10g/mL o 121x10 g/mL Question 4 Liquid mercury has a density of 13.6 gmL. Which of the following substances will float on mercury? Density gml1 Substance neptunium nickel osmium zinc 20.4 89 22.6 7.1 114 lead O Osmium Nickel O Neptunium
Question 3 The volume...
A sample of copper ore with a mass of 0.4225 g was dissolved in acid. A...
A sample of copper ore with a mass of 0.4225 g was dissolved in acid. A solution of potassium iodide was added, which caused the reaction: 2Cu2+(aq) + 5I– (aq) → I3–(aq ) + 2CuI(s) The I3– that formed reacted quantitatively with exactly 29.96 mL of 0.02100 M Na2S2O3 according to the following equation: I3– (aq) + 2S2O32– (aq) → 3I– (aq ) + S4O62–(aq ) What was the percentage by mass of copper in the ore? If the ore...
In the lab, a student determines the density of a metal object by measuring its mass...
In the lab, a student determines the density of a metal object by measuring its mass on a balance and its volume by displacement in a graduated cylinder. The data collected by the student is shown. mass of object: 44.701 g volume of water in cylinder before object submersed: 29.47 ml volume of water + object in cylinder: 35.33 mL Calculate the density of the object. d= g/mL Based on the recorded volume data, and assuming that the student used...
71. A solution of nitric acid has a density of 1.5 g/mL and is 20% by...
71. A solution of nitric acid has a density of 1.5 g/mL and is 20% by weight HNO3. a. What is the molarity of this solution of HNO;? b. What volume of this solution should be taken in order to prepare of 5.0 L of a solution of 0.15 M nitric acid by dilution with water? In order to obtain a precise concentration, the 0.15 M HNO solution is standardized against pure Hgo (molar mass = 216.59 g/mol) by titrating...
4) what volume (mL) of a 3.1% (by mass) chlorine solution (density= 1.15 g/mL) contains enough...
4) what volume (mL) of a 3.1% (by mass) chlorine solution (density= 1.15 g/mL) contains enough chlorine to raise the chlorine concentration of a 27000 gal swimming pool to 2.5 ppm (by mass). Assume a density of 1.00 g/mL for the pool water. (4 pts)
Please make your hand write clear thank you
d.- Determine the density (in g/mL) of a substance that weighs 0.695 Ib and occupies a volume of 3.4 qt. e. found in a room to be 5.7 x 10' mg/cm. How many grams of CO are present in the room if the rooms dimensions measure 3.5 m x 3.0 m x 3.2 m? A cylindrical piece of metal is 2.03 inches high, has a diameter of 17.0 mm wide, and weighs...
This reaction asks for dissolving 0.85 g of kl to 1.2 mL of water. If the measured mass is 0.98 g of KI, what is the volume of water necessary to prepare a solution with the same concentration than in the procedure? a 1.8 ml b. 1.1 mL c. 1.2 mL d. 1.4 ml
Question 3 The volume of the nucleus of a carbon atom is about 9.9x1029 mL The molar mass of carbon is 12.00 g mol. What is the density of the carbon nucleus? 08.25x10 g/mL o 119x10g/mL o 121x10 g/mL Question 4 Liquid mercury has a density of 13.6 gmL. Which of the following substances will float on mercury? Density gml1 Substance neptunium nickel osmium zinc 20.4 89 22.6 7.1 114 lead O Osmium Nickel O Neptunium
Question 3 The volume...
In the lab, a student determines the density of a metal object by measuring its mass on a balance and its volume by displacement in a graduated cylinder. The data collected by the student is shown. mass of object: 44.701 g volume of water in cylinder before object submersed: 29.47 ml volume of water + object in cylinder: 35.33 mL Calculate the density of the object. d= g/mL Based on the recorded volume data, and assuming that the student used...
71. A solution of nitric acid has a density of 1.5 g/mL and is 20% by weight HNO3. a. What is the molarity of this solution of HNO;? b. What volume of this solution should be taken in order to prepare of 5.0 L of a solution of 0.15 M nitric acid by dilution with water? In order to obtain a precise concentration, the 0.15 M HNO solution is standardized against pure Hgo (molar mass = 216.59 g/mol) by titrating...
4) what volume (mL) of a 3.1% (by mass) chlorine solution (density= 1.15 g/mL) contains enough chlorine to raise the chlorine concentration of a 27000 gal swimming pool to 2.5 ppm (by mass). Assume a density of 1.00 g/mL for the pool water. (4 pts)
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