0.326 moles of gas
Explanation:
Knowing the volume of a gas at standard temperature and pressure (STP) we may calculate the number of moles of the gas using the following formula:
number of moles = volume / 22.4 (L /mole)
number of moles of gas = 7.3 (L) / 22.4 (L /mole)
number of moles of gas = 0.326 moles
Learn more about:
molar volume
brainly.com/question/7144003
brainly.com/question/11160940
#learnwithBrainly
It is important to compare the positive and negative test results with those of known compounds as positive results indicate the presence of that known compound and negative results indicate the absence of that compound which is used for reference.
<h3>What is qualitative analysis?</h3>
Qualitative chemical analysis is a method to determine the chemical composition of a sample.
There are two types of qualitative analysis:
- Organic Qualitative analysis: It helps in determining the chemical bonds and functional groups in a sample
- Inorganic qualitative analysis: It helps in determining the ions in the given sample
There are seven ways to analyze a sample qualitatively, which are
A reference compound is always used to which results are compared.
A Positive result indicates that the reference compound is present in the sample whereas a negative result indicates that the reference compound is absent in the given sample.
Learn more about qualitative analysis:
brainly.com/question/1779681
#SPJ4
Answer:
9.5
Explanation:
Electrophoresis is a separation technique which involves the passage and the use of electric current in separating amino acid mixtures. The positively charged protein moves to the negative electrode while the negatively charged protein moves to the positive electrode which is in accordance to the law of attraction.
Proteins however perform optimally at the right temperature and pH. Studies shows that the optimum pH to separate a mixture of lysine, arginine, and cysteine using the electrophoresis method of separation is around 9.5
