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What if the potassium cholrate sample is contaminated with moisture?
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How can you make a sample of potassium sulphate?
2koh + h2so4 = k2so4 + 2h20
Why should potassium hydroxide not be exposed in air?
Potassium hydroxide is a hygroscopic substance, meaning it absorbs moisture from the air. Exposure to air can cause it to form a solution, becoming corrosive and causing skin and eye irritation. It can also react with carbon dioxide in the air to form potassium carbonate, reducing its effectiveness as a base.
Why the platinum wire is repeatedly flame sterilized in the preparation of bacterial smears?
To kill all bacteria, to ensure your sample is not contaminated.
When potassium burns what product is made?
The potassium creates a small explosion. Afterwards there will be a small green flame.A2. This is a dangerous experiment, as potassium has a vigorous reaction with water. It will react with the moisture in the air with sufficient vigor to dissociate that water into oxygen and hydrogen which will again react. This sort of experiment must only be performed under an inert gas environment.Additionally, the potassium sample will have a surface film of kerosene from its storage, and this burning will add to the hazard. The flame is an orange-red.
Why will the observed melting point range be lower than true value if we heat the sample too fast?
A lower and wider melting point range could indicate that the sample was contaminated with trace amounts of impurities.
What if a potassium chlorate sample is contaminated with moisture. Would an analysis show the experimental oxygen higher or lower than the theoretical oxygen?
The chemical composition is determined on a dry and pure sample.
How do you know moisture in refrigeration system?
There is a test kit you can buy at a refrigeration distributor that allows you to capture a refrigerant sample. With this kit you can tell acid levels and moisture content. You need to know what you're doing to get a clean, non contaminated sample.
What does blood test contaminated mean?
It depends on the situation, it can mean that the sample was contaminated by improper cleansing technique, it can be contaminated by I.V. fluid, or it can be contaminated by tissue fluid. Most all scenarios of contamination are directly related to the skill and integrity of the one collecting the blood sample.
Why is it advisable to keep atmospheric moisture from getting into the sample?
It is to prevent contamination since moisture from air could be absorbed by the sample.
How many moles in 284 grams of potassium?
Potassium has atomic number 39.1.Amount of K in 284g sample = 284/39.1 = 7.26molThere are 7.26 moles of potassium in a 284g sample.
42.7 gram sample of potassium nitrate contains how many grams of potassium?
16.5
What if a potassium chlorate sample is contaminated with KCL would the experimental percent oxygen be higher or lower than the theoretical percent oxygen?
the experimental % oxygen would be lower because there would be more KCL in the simple than oxygen
How many moles in 449 g of potassium?
Potassium (chemical symbol K) has atomic number 39.1. Amount of K in 449g sample = 449/39.1 = 11.5mol There are 11.5 moles of potassium in a 449g sample.
What are the number of sulfur atoms in a sample of 21.6 g of mercury1 nitrate?
Mercury I nitrate does not contain sulfur unless the sample is contaminated.
As the dew point temperature of a sample air decrease the amount of moisture in that saple of air?
The moisture decreases.
How many potassium atoms are there in a sample of K2Cr2O7 having a mass of 24.43 g?
The number of potassium atoms is 2,04.10e21.
How do you know if a sample is more contaminated than other?
Methods of analytical chemistry are applicable.
