0
Suppose you have 2 samples of water in dark containers You also have two labels Pond water and ocean water Without tasting the water how can you tell which label goes on which container?
Wiki User
∙ 15y ago
Ocean water is more dense due to the salt content. Weigh the water. If the weight per mL exceeds 1g/mL it is the ocean water.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
Where can you buy a water bottle not made with phthalates?
It is my understanding when doing research for phthalates in our water samples, that phthalates are released from plastic containers. We changed our containers from plastic to glass and voila! no more phthalates in our samples. It seems that a water bottle with no phthalates would have to be a glass bottle,
Where can one finds samples before choosing the paint colors?
One can find samples before choosing paint colours in art stores like ValSparPaint They offer open paint containers for the consumer to examine, and make a decision about that colour.
Explain why there are no rock samples until 4 billion years ago?
No rock samples have been found so far that are older than 4.2 billion years.Maybe that says something about the age of the earth, do you suppose ??
What is microcontainer?
Literally it is a tiny container, micro means small. In health we use microcontainers for collecting samples from children including newborns.
Whats a sample of something used in a lab for study or analysis?
Denise should put the herb samples in the lab's waste container.
What experiments do geologists conduct?
I suppose hardness and density tests on rock samples. Making seismic soundings and measuring the results, analyzing the data collected.
What are containers of uranium?
This depends on the quantity, chemical form, physical form, enrichment. In laboratory, for small samples, can by used bottles from glass, polyethylene, polypropylene, teflon. In industry containers of stainless steel or polyesters reinforced with glass fibers can be used. For uranium fluorides nickel alloys are recommended.
do we still use something similar to canopic jars to this day?
Canopic jars, used by the ancient Egyptians to hold and preserve the internal organs of mummified bodies, are not commonly used in their original form in modern times. However, the concept of preserving organs or storing biological samples is still relevant in various fields. In medical and scientific contexts, we use containers such as vials, test tubes, or specimen jars to store and preserve biological materials, such as tissue samples or bodily fluids, for diagnostic, research, or transplantation purposes. These containers are designed to maintain the integrity and viability of the samples.
How can you store tissue samples?
To store tissue samples for research, they are most of the time converted into FFPE blocks and stored in an airtight container, preferably in the refrigerator at 40 °C. It is also possible to store them as fresh frozen samples at -80 °C using dry ice or liquid nitrogen tanks. If you want to dive deeper into the topic, you could visit our website, where we offer human tissue samples: centralbiohub.de/biospecimens/tissue-bank/human-tissue-samples
Inferences based on voluntary response samples are generally not reliable true or false?
True. Suppose you were to ask a group of people for volunteers willing to step forward and describe their experiences in prison. How many ordinary people, with or without experience of prison, would willingly step forward?
How long are urine samples good for testing?
If properly sealed and stored, urine samples are good for testing up to 24 hours after the sample given. The urine sample should be in a sterile container within a sealed plastic bag and stored in a refrigerator.
What would be an unethical?
taking blood samples from patients for research purpose without consent
