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Related Concept Videos

Standard Enthalpy of Formation02:37

Standard Enthalpy of Formation

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Enthalpy changes are typically tabulated for reactions in which both the reactants and products are at the same conditions. A standard state is a commonly accepted set of conditions used as a reference point for the determination of properties under other different conditions. For chemists, the IUPAC standard state refers to materials under a pressure of 1 bar and solutions at 1 M and does not specify a temperature. Many thermochemical tables list values with a standard state of 1 atm. Because...
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Standard Electrode Potentials03:02

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On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
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Measurement: Standard Units03:38

Measurement: Standard Units

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Every measurement provides three kinds of information: the size or magnitude of the measurement (a number), a standard of comparison for the measurement (a unit), and an indication of the uncertainty of the measurement. While the number and unit are explicitly represented when a quantity is written, the uncertainty is an aspect of the errors in the measurement results.
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Calculating Standard Free Energy Changes02:49

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The free energy change for a reaction that occurs under the standard conditions of 1 bar pressure and at 298 K is called the standard free energy change. Since free energy is a state function, its value depends only on the conditions of the initial and final states of the system. A convenient and common approach to the calculation of free energy changes for physical and chemical reactions is by use of widely available compilations of standard state thermodynamic data. One method involves the...
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Standard Solutions01:14

Standard Solutions

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Standard solutions refer to solutions with a precisely known concentration or composition. A primary standard is a highly pure, high molar mass, stable substance that is entirely soluble in water, the most commonly used solvent in analytical chemistry. The primary standard solution can be used to standardize secondary standards, which are substances with known concentrations but are less pure and stable. Standard solutions are essential for achieving accurate and reliable results in analytical...
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Standards of Care II01:19

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Nurses bear specific legal responsibilities under several federal statutes, including:
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Reproducibility: the search for microbiome standards.

Joseph Martin1

  • 1Future Science Group, Unitec House, 2 Albert Place, London, N3 1QB, UK.

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|August 13, 2019
PubMed
Summary

The scientific reproducibility crisis demands solutions. This feature highlights new biological laboratory technologies, methods, and projects designed to enhance research reliability and data integrity.

Area of Science:

  • Biological laboratory research
  • Scientific reproducibility

Background:

  • The scientific community faces a reproducibility crisis, impacting research reliability.
  • This crisis necessitates advancements in laboratory practices and methodologies.

Discussion:

  • Exploring innovative technologies and methods to improve biological research reproducibility.
  • Examining current projects focused on addressing the reproducibility challenge.

Key Insights:

  • New tools and techniques are emerging to bolster experimental validation.
  • Collaborative projects aim to standardize protocols and data sharing.

Outlook:

  • Future directions in laboratory automation and data management for enhanced reliability.

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  • The integration of novel approaches to overcome the reproducibility gap in science.