Why should you heat the sample to constant mass?

Q: In thermal analysis methods. Is the thermocouple for measuring sample temperature immersed directly…

A:

Q: clamp the rubber tube

A: According to Charles Law, volume is directly proportional to temperature at constant pressure.

Q: Why put insulation around the tube connecting the beaker to the pressure gauge in the Jarls…

A: The flow of the force on a surface of the unit area in a perpendicular direction is termed as the…

Q: Why is it important that  the cooling waterbbin a  distillation  apparatus  enter the condenser…

A: The question talks about experimental Chemistry. it involves concept of distillation.

Q: How do you filter benzoic acid in water through the apparatus?

A: The process which is used to purify the impure compound from a solvent is known as recrystallisation…

Q: how we use effiusion in vacuum techniques? how we use effiision in vacuum device? please explain to…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Compression is

A: Compression is when volume is decreased. In C and D option expansion takes place so they are wrong

Q: ve, if the 1 mm sample was heated at 10

A: In this question we have to tell that  what we expect for an approximate melting point according to…

Q: the work done on the gas mixture. R

A: Work done on the system can be expressed as follows

Q: why do you calibrate thermometers and pipets?

A: Calibrate means correlate the result with standard instruments reading.

Q: How can you judge whether the amount of heat applied to a reflux apparatus is sufficient but not too…

A: Answer - According to the question - We can judge it by the solvent's boiling point which is being…

Q: ebuilliometer and bomb calorimter is having a great effect on measuring ethanol Yield than gas…

A: Ebulliometry is based on the principle that the boiling point of wine is depressed in comparison to…

Q: Why is it necessary to measure the temperature of water when using it to calibrate a volumetric…

A: As the volume is temperature dependent so  it is necessary to measure the temperature of water when…

Q: How would the unknowns masss be affected if condensed water vapor from the bath was trapped…

A: The unknowns masss be affected if condensed water vapor from the bath was trapped underneath the…

Q: the heats of

A:

Q: The following errors in procedure can greatly affect the experimental result. Explain which…

A: In chemistry, there are many ways to check the deviation of experimental data from the accurate…

Q: Please help me with these 3 I don’t need the actual work just the letter bubbles 8,10,11

A: Answer 8 :-  Part a :

Q: s the temperature of the sample ir

A: The ideal gas law is the equation of the state of a hypothetical ideal gas.  PV=nRT where, P is the…

Q: How can we reduce the gas residence time in the hottest part of the flame zone to reduce NOx…

A: The industry has focused on the two main sources of Nitrogen Oxides, NOx, in fired heaters. Thermal…

Q: What would you do if a Bunsen Burner caught fire at the base of the burner, by the adjusting valve?

A: Robert Bunsen discovered the Bunsen burner which is used in the laboratory used for sterilization,…

Q: What is the soil moisture potential () at saturation (enter numerical value only)?

A: Soil water(moisture) potential is the measure of water content in soil. At saturation level it is…

Q: 2-will determination of moisture content in a winter for example be reliable and representative for…

A: No the determination of moisture content in winter will not be reliable or representative for the…

Q: 150 kg of hexane is burned completely with 35% excess air. Find the complete analysis of the flue…

A: Air mainly composed of nitrogen with 78% and oxygen with 21%. Hexane reaction with O2 (g) and…

Q: Why is important to dry a primary standard to a constant mass ?

A: A primary standard is a reference chemical used to measure an unknown concentration of another known…

Q: What is the relationship between turtuosity and diffusion?

A: A question based on diffusion, which is to be accomplished.

Q: Compressibility, Molecular weight Mass flow pressure (%) pressure (%) (Ib/hr) а. 1.0 b. 0.8 с. 1.0…

A: Dear Student,                      The solution of each of the given cases is lengthy and hence the…

Q: Are there substances that can be compressed reasons why or why not

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: How does the ramp rate affect the actual AND observed melting point?

A: Thermal rate effect the actual melting point of subtance, higher the ramp rate higher the observed…

Q: is molar volume dependent on a sample size? Why or why not.

A: A question based on molar volume, which is to be accomplished.

Q: The glowing splint test was conducted for an unknown gas. The splint flamed on, indicating the gas…

A: This test is used to identify oxidized gas that can aid the splint to glow but not burn. When the…

Q: Are there any alternatives for a rotary evaporator?

A: Rotary evaporator is an equipment used in chemical laboratories to separate the solvents and the…

Q: IN THE HOOD, 1 mL of 6 M HNO3 and heat in a water bath until change 1 mL of 0.1 M KI Occurs

A:

Q: A homogeneous mixture of hydrogen and oxygen separation methods

A: a homogeneous  mixture has same uniform composition.  Best  homogeneous mixture of hydrogen and…

Q: Arrange the materials below from most to least penetration by ß particles. Assume a constan distance…

A: Radiation is nothing but the giving off the rays or the high speed particles. Here the atoms are…

Q: H2/Ni heat, 24 h

A: The answer to the following question is-

Q: What is the simplest CGS unit for "stroke"?

A: CGS stand for centimeter gram second.

Q: mass fraction:

A:

Q: Consider solid and liquid samples of equal mass and heat capacity If microwaves are fired at both…

A:

Q: In the separation of the Naphthalene experiment.  A student accidentally let some of the vapor…

A:

Q: Please show the calculation (and answer) for the actual volume of hydrogen gas collected, corrected…

A: To show the calculation (and answer) for the actual volume of hydrogen gas collected, corrected to…

Q: Justify

A: Dear student I have given answer to your question in the image format.

Q: For each of the following statements, answer TRUE or FALSE and explain your answer briefly.…

A: The goal of calibration is to reduce any uncertainty in measurement by ensuring the accuracy of test…

Q: Why do we heat our hydrate samples to a constant weight?

A: Hydrated sample, means that the compound is not pure, it is hydrated or is having water molecules…

Q: How many electrons are available for transfer per kilogram of ethanol?

A: For 46 gm (1mole) there is 26 electrons For 1000 gm there will be (26÷46)×1000 = 565 electrons

Q: a mixture of benzoic acid and sand can be properly seperated without heating the mixture to 100…

A: Yes given statement is true  Benzoic acid and sand can separate by filter paper

Q: (V) Consider solid and liquid samples of equal mass and heat capacity. If microwaves are fired at…

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first question…

Q: e pressure

A:

Q: 26. Give a detailed review of the filtration process. (C

A:

Q: pressure Exampie A nswer:

A: This reaction is Dieles-alder reaction, called [ 4 + 2 ]π cycloaddion reaction in the presence of…

Q: if a volumetric pipet delivers 24.844 g of deionized water at 31.00 celsius what is the calibrated…

A: Given : Mass of deionized water =  24.844 g Temperature = 31.00 celsius