error would result in the volume measurement too small.
The weighted volume would weigh less without the air bubbles because they are lighter than the material they have replaced.
Due to the fact that d = m/v and that if m is low, then d will also be low, this would result in a low side inaccuracy in the density.
<h3>What distinguishes the two concepts of volume and mass density?</h3>
Mass Density vs. Volume. Air pockets form between the granules when you use a graduated cylinder to measure the volume of a solid, such as salt that is granulated. This decreases the measurement's precision. When air bubbles are trapped inside a solid, they take up space, which reduces the solid's density and somewhat inflates the volume measurement.
<h3>How do air bubbles impact a solid's density?</h3>
When air bubbles are trapped inside a solid, they take up space, which reduces the solid's density and somewhat inflates the volume measurement. Compact the solid using the end of a small pestle, rubber "policeman," or stirring rod to lessen the effects of air bubbles in solids.
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1. Samples of a microbial colony obtained from the natural environment are not pure culture. They are mixed cultures because the environment consists of an array of microorganisms and not one specific organism. A sample obtained from the natural environment such as water or soil may contain several species of microbes that need to be further isolated to obtain a pure culture.
2. Isolation streak plate technique involves the dilution of the sample several folds and then streaking a small amount using a sterile inoculation loop on an agar plate in a zig-zag manner. This is done to obtain a pure culture of bacteria from a mixed population by separating the microprocessor. When the sample is diluted into a small concentration and is streaked onto agar placed, widely spaced, discrete colonies of bacteria can be observed. These isolated colonies can be further cultured to obtain pure cultures by picking and re-streaking them on fresh agar plates.
3. A microbial colony is considered a pure culture because it consists of single species. A single species of bacteria cluster and form an isolated colony on an agar plate which can be further plated on fresh medium.
3-1 - If your agar plate shows discrete uncluttered colonies then you have obtained an isolated colony. The following picture might help you to understand.
3-2. If you subculture isolated microbes into a sterile nutrient broth without any contamination, it will still be considered pure culture because it is single isolated species in a sterile aseptic environment of the nutrient broth.
3.3. A pure culture can become a mixed culture due to contamination. This could be caused by airborne bacteria if your conditions are not aseptic. Contamination is possible if the work area is not clean and sterile or if the glassware is not sterile. The contamination can transform your pure culture into a mixed culture and is hence problematic. So, it is very important to maintain a sterile and aseptic environment, glassware, and instruments.
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Answer:
answer is d ;))))
Explanation:
trust me just took the test
