A beaker with 1.50
A 1.00-kg beaker containing 2.00 kg of oil (density = 916 kg/m3) rests on a scale. A 1.50-kg block of iron is suspended from a spring scale and is completely submerged in the oil (see figure below). Find the equilibrium readings of both scales.
There is a beaker completely filled with water (beaker #1). Then in another beaker a block of wood is gently lowered into the beaker until it floats on its own (beaker #2). Both beakers are sitting on scales. Explain what happens to the reading on the scale after the block floats in the water (beaker #2), compared to the original reading (beaker #1). Assume any water that is displaced from the beaker drains to the floor. Limit your answer to...
Looking into a beaker a student observes a corner of the bottom. Filling the beaker with oil lets him observe the center of the bottom. What is the index of refraction n of the oil? Diameter of the beaker and its height are the same.
A saline solution of KCL is prepared by weighing an empty beaker (mass of beaker is 32.456 grams) and then a beaker with solid KCL (mass of beaker + KCL is 157.458 grams). This solid is mixed with 425.000 grams of water. Calculate the percent by mass of KCL in the solution. %=mass solute/total mass x 100%
You are given five beakers labeled A-E. Each beaker is labeled as follows: Beaker A. 6.00 g of potassium thiocyanate Beaker B. 6.00 g of magnesium oxalate Beaker C. 6.00 g of gallium iodide Beaker D. 6.00 g of rubidium hypochlorite Beaker E. 6.00 g of perchloric acid Which beaker, A-E, contains the greatest number of moles of compound? Answer: You are given five beakers labeled A-E. Each beaker is labeled as follows: Beaker A. 6.00 g of potassium thiocyanate...
A beaker of acetone (C3H60) is left in a 3.00 liter container at 298 Kelvin until the acetone vapor pressure in the box reaches the equilibrium value of 200.0 mmHg. The beaker of acetone is then removed (assume no gas particles escape) a. With the temperature held constant, what happens to the vapor pressure when the container is expanded to 9.00 L? b. Referring to part a., how many mols of acetone vapor are in the box before the expansion?...
We have three beakers in the lab: Beaker A: 10% NaCl Beaker B: 0.9 % NaCl Beaker C: 100% H2O The solution in Beaker A is _______________. What reaction would a red blood cell have if it is placed in Beaker C? a. Hypertonic/it will shrink (crenate) b. Isotonic /it will burst (hemolysis) c. Hypertonic / it will burst (hemolysis) d. Isotonic/it will shrink (crenate)
how do u solve for d) on the percent humidity ?
A beaker of acetone (C3H60) is left in a 3.00 liter container at 298 Kelvin until the acetone vapor pressure in the box reaches the equilibrium value of 200.0 mmHg. The beaker of acetone is then removed (assume no gas particles escape) a. With the temperature held constant, what happens to the vapor pressure when the container is expanded to 9.00 L? b. Referring to part a., how many...
please help me write the dissociation reactions for a and
b
A. Label a clean 50-mL beaker as "Co(NO)2" and place a small nitrate into the beaker. Add to dissolve the solid. reaction for the cobalt(II) nitrate after it has dissolved. approximately 20 mL of deionized water to the beaker. Stir Describe the appearance of the solution. Write a dissociation B. Label a clean 50-mL beaker as "NasPO." and place a small scoop of solid sodium e into the beaker....
these problems go together.
DATA Mass of emply "Beaker A Mass of "Beaker A' + grams of sodium carbonate Mass of empty Beaker" Mass of "Beaker B* grams of calcium chloride Mass of the filter paper used infiltration Mass of the filter paper the precipitate 66.9790 x 69.0640g 67.06204 69. 1170g 1.oosog 2.7600g CALCULATIONS Enter the following calculations in the table below. 2. Number of moles of sodium carbonate used 3. Number of moles of calcium chloride used 4. Which...