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Alina [70]
3 years ago
10

what mass of chromium (III) sulfide is produced from the reaction of 13.2 g of sulfur with excess chromium?

Chemistry
2 answers:
Andreas93 [3]3 years ago
5 0

Answer: Cr2S3

Explanation:

PIT_PIT [208]3 years ago
5 0

Answer:27.5g

Explanation:

13.2g S/1 x 1 mole S/32.066g S x 1 mole Cr2S3/3 moles S x 200.19g Gr2S3/1 mole Cr2S3

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Write about injector use in gas chromatography in detail. (don't copy from online sites )​
KatRina [158]

Answer:

Gas chromatography  is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture. In preparative chromatography, GC can be used to prepare pure compounds from a mixture

as chromatography is a term used to describe the group of analytical separation techniques used to analyze volatile substances in the gas phase. In gas chromatography, the components of a sample are dissolved in a solvent and vaporized in order to separate the analytes by distributing the sample between two phases: a stationary phase and a mobile phase. The mobile phase is a chemically inert gas that serves to carry the molecules of the analyte through the heated column. Gas chromatography is one of the sole forms of chromatography that does not utilize the mobile phase for interacting with the analyte. The stationary phase is either a solid adsorbant, termed gas-solid chromatography (GSC), or a liquid on an inert support, termed gas-liquid chromatography (GLC).

Introduction

In early 1900s, Gas chromatography (GC) was discovered by Mikhail Semenovich Tsvett as a separation technique to separate compounds. In organic chemistry, liquid-solid column chromatography is often used to separate organic compounds in solution. Among the various types of gas chromatography, gas-liquid chromatography is the method most commonly used to separate organic compounds. The combination of gas chromatography and mass spectrometry is an invaluable tool in the identification of molecules. A typical gas chromatograph consists of an injection port, a column, carrier gas flow control equipment, ovens and heaters for maintaining temperatures of the injection port and the column, an integrator chart recorder and a detector.

To separate the compounds in gas-liquid chromatography, a solution sample that contains organic compounds of interest is injected into the sample port where it will be vaporized. The vaporized samples that are injected are then carried by an inert gas, which is often used by helium or nitrogen. This inert gas goes through a glass column packed with silica that is coated with a liquid. Materials that are less soluble in the liquid will increase the result faster than the material with greater solubility.The purpose of this module is to provide a better understanding on its separation and measurement techniques and its application.

Explanation:

Purpose of gas chromatography

The main purpose of the gas chromatography technique is to separate the compounds that possess:

  • High volatility
  • Low molecular weights
  • Thermal stability
8 0
3 years ago
The transfer of energy from objects with higher temperatures to objects with lower temperatures is defined as which of the follo
timofeeve [1]
<span>All matter contain heat energy, and it can be seen anywhere as long as it contains mass and occupies space. Heat energy is another form energy that transfers particles in a substance through kinetic energy. One way to transfer heat from one object to the other is through the difference in temperature between two objects.</span>
3 0
3 years ago
How does the periodic table tell me if a element is solid, liquid, gas, or man made?
Fittoniya [83]

Answer:

if you search up the periodic table and go to any website it will let you press on the element and it will say if it is a gas,solid or liquid and it might say if it is man made!

Explanation:

i really hope this helps:)

5 0
3 years ago
Please select the word from the list that best fits the definition
leonid [27]

Answer:

Systemic Circulation

Explanation:

7 0
2 years ago
Read 2 more answers
I need help with the question please help
Irina18 [472]

Answer:

Explanation:

u are right

8 0
3 years ago
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