Podcast
Questions and Answers
Which of the following formulas represents 'salpetru de Norvegia'?
Which of the following formulas represents 'salpetru de Norvegia'?
- KNO3
- NH4NO3
- Ca(NO3)2 (correct)
- NaNO3
Match the trivial name with the corresponding chemical formula:
Match the trivial name with the corresponding chemical formula:
Vitriol = H2SO4 Apa tare = HNO3 Spirt de sare = HCl Silvina = KCl
What is the chemical formula for 'sarea amară sau engleză, ori sarea Epsom'?
What is the chemical formula for 'sarea amară sau engleză, ori sarea Epsom'?
- AgNO3
- MgSO4 · 7H2O (correct)
- Na2SO4 · 10H2O
- CuSO4 · 5H2O
The systematic nomenclature of organic compounds was formalized before the nomenclature of inorganic compounds.
The systematic nomenclature of organic compounds was formalized before the nomenclature of inorganic compounds.
What is the chemical formula for 'talpa-iadului'?
What is the chemical formula for 'talpa-iadului'?
'Apa de Javel' corresponds to the chemical formula ______.
'Apa de Javel' corresponds to the chemical formula ______.
Which of the following compounds is known as 'piatra-vînătă'?
Which of the following compounds is known as 'piatra-vînătă'?
Which formula corresponds to 'sarea lui Glauber'?
Which formula corresponds to 'sarea lui Glauber'?
Which substance is known as 'salpetru de amoniu'?
Which substance is known as 'salpetru de amoniu'?
What is the chemical formula for 'salpetru de Chili'?
What is the chemical formula for 'salpetru de Chili'?
Flashcards
What is vitriol?
What is vitriol?
H2SO4, also known as sulfuric acid.
What is aqua fortis (apă tare)?
What is aqua fortis (apă tare)?
HNO3, a highly corrosive and strong oxidizing agent.
What is spirit of salt (spirt de sare)?
What is spirit of salt (spirt de sare)?
HCl, a corrosive, strong acid.
What is tipirig?
What is tipirig?
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What is silvină?
What is silvină?
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What is Eau de Javel (apă de Javel)?
What is Eau de Javel (apă de Javel)?
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What is Bertholet's salt (sarea Bertholet)?
What is Bertholet's salt (sarea Bertholet)?
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What is saltpeter from India (salpetru de India)?
What is saltpeter from India (salpetru de India)?
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What is saltpeter from Chile (salpetru de Chili)?
What is saltpeter from Chile (salpetru de Chili)?
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What is saltpeter from Norway (salpetru de Norvegia)?
What is saltpeter from Norway (salpetru de Norvegia)?
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Study Notes
- Planck's constant (h) represents the quantum of electromagnetic action, linking energy and frequency.
Value
- $h = 6.62607015 \times 10^{-34} J.s$
- $h = 4.135667696 \times 10^{-15} eV.s$
- J represents joule, eV represents electronvolt, and s represents second.
Significance
- Indicates quantization of energy
- Related to the uncertainty principle
- Applicable to blackbody radiation
- Explains the photoelectric effect
Formulae
- $E = h \times v$, where E is energy, and $v$ is frequency.
- $\lambda = \frac{h}{p}$, where $\lambda$ is wavelength, and p is momentum.
- $\Delta x \Delta p \ge \frac{h}{4\pi}$, where $\Delta x$ is uncertainty in position, and $\Delta p$ is uncertainty in momentum.
Uses
- Fundamental in quantum mechanics for describing matter and energy at atomic scales.
- Applied in spectroscopy to analyze interactions between matter and electromagnetic radiation.
- Used in material science for examining nanoscale material properties.
- Applied in the medical field, including lasers, MRI, and X-ray technologies.
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