Which of the following is a best practice in weighing solid samples? A Place chemicals directly on the balance pan. B Use weighing paper, a watch glass, a beaker, or some other container to measure mass of your solid samples. Do not return the mass settings to zero mark; let the next user tare it for you. For different trials of an experiment, use multiple balances for your measurements.
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- Which of the following is a best practice in weighing solid samples? A) Use weighing paper, a watch glass, a beaker, or some other container to measure mass of your solid samples. Do not return the mass settings to zero mark; let the next user tare it for you. For different trials of an experiment, use multiple balances for your measurements. Place chemicals directly on the balance pan.part 1 Which of the following is a best practice in weighing solid samples? Use weighing paper, a watch glass, a beaker, or some other container to measure mass of your solid samples. Do not return the mass settings to zero mark; let the next user tare it for you. Place chemicals directly on the balance pan. For different trials of an experiment, use multiple balances for your measurementsWhich of the following is a best practice in weighing solid samples? Do not return the mass settings to zero mark; let the next user tare it for you. Use weighing paper, a watch glass, a beaker, or some other container to measure mass of your solid samples. Place chemicals directly on the balance pan. For different trials of an experiment, use multiple balances for your measurements.
- Which of the following is a good practice in weighing solid samples? А Do not return the mass settings to zero mark; let the next user tare it for you. B Use weighing paper, a watch glass, a beaker, or some other container to measure mass of your solid samples. Place chemicals directly on the balance pan. D For different trials of an experiment, use multiple balance for your measurements.Which of the following is a best practice in weighing solid samples? A Do not return the mass settings to zero mark; let the next user tare it for you. B Place chemicals directly on the balance pan. Use weighing paper, a watch glass, a beaker, or some other container to measure mass of your solid samples. D For different trials of an experiment, use multiple balances for your measurements.A student adds 3.993 grams of salt to a beaker and then adds an additional 69.220 grams of water to the beaker. After stirring, the salt completely dissolves in the water. Calculate the % salt by mass of this solution. Do not round off your answers until the very end of the calculations. Report your answer to the correct number of significant figures, and do not include units or the % sign in your answer.
- 1. A student weighs an empty special round bottom flask and stopper. He finds the mass to be 56.972 g. He then adds about 5 mL of an unknown liquid and heats the flask in a boiling water bath at 100°C. He allows all the liquid to vaporized and then removes the flask from the bath, stoppers it, and lets it cool. Upon cooling, he briefly removes the stopper, then replaces it and weighs the flask and condensed vapor, obtaining a mass of 57.917 g. The volume of the flask is known to be 240.2 mL. The barometric pressure in the laboratory that day is 743 mm Hg. What was the pressure of the vapor in the flask in atm? O 0.9776 atm 0.98 atm 0.978 atm 0.977 atm1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…Which of the following is a best practice in weighing solid samples? Use weighing paper, a watch glass, a beaker, or some other container to measure mass of your solid samples. For different trials of an experiment, use multiple balances for your measurements. Do not return the mass settings to zero mark; let the next user tare it for you. Place chemicals directly on the balance pan. Question 10
- Here are two possible methods for measuring the volume of an irregular shaped object: a) Add it to a graduated cylinder containing a known volume of water. Measure the change in the volume of the water after the object has been added. The graduated cylinder is graduated in 1 mL increments. b) Add the object to a vessel that is full of water. Collect and measure the mass of the water that is displaced on a digital balance that provides mass to the 0.001 g. Determine the volume using the tabulated densities of water in table 1.1. Which method would be more likely to produce a more precise measure of the volume of an object?1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…1. All answers to be entered via short answer are in the numerical format and presented up to the 3rd decimal place. Add trailing zeros if necessary, to complete your answer. NO NEED TO INCLUDE THE UNIT. For uniformity of answers, please be guided by the following examples: If your answer is 5.627594, enter 5.628 If your answer is 3.129934, enter 3.130 If your answer is 8.38, enter 8.380 If your answer is 1.2, enter 1.200 If your answer is 25, enter 25.000 If your answer is less than the value of 1, always place a zero before the decimal point (example: 0.5, enter 0.500) 2. In cases for answers in the exponential format, please be guided by the following examples and format: Do not convert your answer to decimal format If your answer from the calculator is 1.23454566 x 10E-4, enter 1.235x10^-4 (no spaces in between) If your answer from the calculator is 7.379566 x 10E-5, enter 7.38x10^-5 (no spaces in between) 3. For the atomic weights, it should be rounded to the nearest whole…