Calculate the mass of the powder as follows:
Mass of powder = mass of weigh boat and powder - mass of weigh boat
Mass of powder = 2.015 - 1.225 = 0.790 grams.
Therefore, the required answer is 0.790 gram.
Please give good rating.
A student used an analytical balance to measure the mass of a powder sample (see data...
Question 11 You use an analytical balance to measure the mass of a weigh boat and record a mass of 1.5624 g. You then add some NaHCO, to Not changed since the weigh boat and give the welgh boat to your lab partner to measure. Your lab partner mistakenly forgets to record all of the digits on the balance and records a mass of 1.92 g What is the minimum number of grams of acetic acid that you would need...
Question 6 1 pts Suppose you are measuring the mass of a solid sample on a balance using a weigh boat. You record the data in a table. Mass of weigh boat 3.117 g Mass of weigh boat and sample 9.405 g What is the mass, in grams, of the solid sample? Question 7 2 pts Sulfuric acid, H2SO4, is an important industrial chemical (typically used for fertilizers and making of many other chemicals), typically synthesized in a multi-step process....
Station 4 – weighing with the analytical balance Rebecca was asked by her chemistry teacher to make 250 mL of a 0.0.005 M solution of KI (166.0028 g/mol). • What mass of KI is required to make 250 mL of 0.0.005 M of KI (4 points) ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… • Using the analytical balance, weigh the mass required to prepare 250 mL of 0.0.005 M solution of KI. (6 points) ………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
A student in this laboratory goes to the analytical balance and measures out 1.301 g of Ba(NO3)2 and 2.412 g of NH2SO3H. What mass in grams of Ba(NH2)2 can be produced according to the unbalanced chemical reaction below? If you need a periodic table of elements, please click HERE A A -... Ba(NO3)2 (aq) + .... NH2SO3(aq) + ---- H20(1) - _ -.. Ba(NH2)2 (s) + ---- H2504 (aq) + ---- HNO; (aq)
Most analytical machines used in science can either measure absorbance of light, like the spectrophotometers used in BioZ 151 and 152 labs, or can measure change in electrical conductance. In order to convert things like absorbance values into concentration data, a linear regression is used. In order to determine nitrite concentration in water samples, nitrite is reacted with several chemicals to produce a purple color. The absorbance of the solution is measured from known amounts of nitrite to produce a...
1. Suppose that you decompose 20.07 g of Ni2O3NiX2OX3, which has a molar mass of 165.39 g/mol, into nickel and oxygen. 2Ni2O3(s)⟶4Ni(s)+3O2(g)2NiX2OX3(s)⟶4Ni(s)+3OX2(g) After completing the decomposition, you have 9.56 g of solid NiNi, which has a molar mass of 58.963 g/mol. What is the percent yield of your decomposition? 2. Suppose you are measuring the mass of a solid sample on a balance using a weigh boat. You record the data in a table. Mass of weigh boat 2.147 g...
A student plans to measure the concentration of a basic sample by titration with HCℓ. In order to standardize the HCℓ, a primary standard solution is made by weighing 0.7235 g of "tris" base (H2NC(CH2OH)3 - it is monobasic), quantitatively transferring the powder to a 500 mL volumetric flask, and diluting to volume with deionized water. A 10.00 mL aliquot of the tris solution is taken for titration. What is the concentration of tris in the primary standard, in M?...
A student used the following data to calculate the mass % of total CO2 present in the soda. Be sure to use the current number of significant figures in your answer. Mass of soda bottle before opening = 533.4g. Mass of soda bottle after all CO2 was removed from the soda = 530.6 g. a. 99.5% b. 0.52% c. 53% d. 99.48% e. 0.56%
Ana 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
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: 46.675 g volume of water in cylinder before object submersed: 29.79 mL volume of...
A student determines the molar mass of acetone, CH3COCH3, by the method used in this experiment. He found that the equilibrium temperature of a mixture of ice and water was 1.2oC on his thermometer. When he added 12.2 g of her sample to the mixture, the temperature, after thorough stirring, fell to –3.0oC. He then poured off the solution through a screen into a beaker. The mass of the solution was 100.5 g. How much acetone would there be in...