CHEM 1211 Lecture Notes - Lecture 10: Limiting Reagent, Mass Spectrometry, Molar Mass

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bluedeer149

17 Nov 2017

School

Northeastern University

Department

Chemistry & Chemical Biology

Course

CHEM 1211

Professor

Vasiliki Lykourinou

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Document Summary

Incomplete combustion toxic: steps to balance chemical equations, write an expression using the correct chemical formula that includes one particle of each of the known reactants and products, check if expression is (cid:271)alan(cid:272)ed. If so, you"re done: choose an element that appears in only one reactant and product to balance first, choose the elements that appear in the next fewest reactants and products and balance them. Stoichiometric calculations: stoichiometry, c(s) + o2(g) co2(g) Co2: the mole ratios among the reactants and products in a chemical reaction, means one mole of c reacts with one mole of o2 to produce one mole of, must convert mass into moles. Mass spec: mass spectroscopy: analytical tool to determine the molar mass of substances. Limiting reactants and percent yield: limiting reactant, a reactant that is consumed completely in a chemical reaction, the amount of product formed depends on the amount of limiting reactant available, calculations.

Related Questions

. Explain how photosynthesis and respiration are linked in orderto provide you with energy from the food you eat.

Include in your essay:

Complete descriptions of photosynthesis and aerobicrespiration.
Describe how these two processes are linked between plants andanimals based on the reactants and products (water, carbon dioxide,glucose and oxygen) of both pathways.
Include a description of how energy is transferred fromsunlight to ATP, from ATP to sugars, and from sugars to yourcells.

2. In the absence of oxygen some cells and organisms can useglycolysis coupled to fermentation to produce energy from the sugarcreated by photosynthesis.

Explain the role of fermentation in allowing an organism togenerate energy for its cell(s) in the absence of oxygen.
Include any reactions required for this process, and explainhow the energy from the sun ends up as chemical energy for theanaerobic organism or cell.

3. Cells use enzymes as biological catalysts to increase oraccelerate the rate of reactions, such as those in photosynthesisor glycolysis. This allows reactions to occur under conditions thatsustain life.

Explain how an enzyme catalyzes a reaction. Include in youressay the three main steps of the cycle of enzyme-substrateinteractions.
How is enzyme activity regulated by the cell?

Reference

Audesirk, T., Audesirk, G., and Byers, B. (2008). Biology Ã¢â¬âLife on earth with physiology (8th Ed.). San Francisco, CA:Benjamin Cummings.

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CHEM 1211 Lecture Notes - Lecture 10: Limiting Reagent, Mass Spectrometry, Molar Mass

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