Lloyd’s lab partner is looking down into a test tube while he heats the contents by using a flame. Which action should Lloyd recommend to his partner if heating must continue?
Wear safety goggles while looking into the opening of the test tube.
Cover the opening of the test tube so that no materials can boil out of it.
Move the test tube so that the opening is pointing away from all students.
Put the test tube in a hot water bath so that no water can enter its opening.

Answers

Answer 1

The correct action that Lloyd should recommend to his partner who was looking down into the test tube if heating must continue would be to move the test tube so that the opening is pointing away from all students.

Wearing safety goggles (and looking directly down at the test tube) might not be enough to protect Lloyd's partner nor other students in case the content of the test tube splashes out.Covering the test tube might hinder any generated gas as a result of heating from escaping safely into the air and this might cause an explosion.Putting the test tube in a hot water bath so that water can enter its opening will definitely affect the reaction and prevent them from getting accurate results/observations.

Hence, the most correct action would be for Lloyd's partner to move the test tube so that the opening is pointing away from all students.

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Answer 2

Answer:

Move the test tube so that the opening is pointing away from all students.


Related Questions

Two advantages of secondary tissues?

Answers

Explanation:

Whereas primary tissues allow for vertical growth, secondary tissues allow for lateral growth: they allow stems and roots to become wider. In roots, the formation of both secondary meristems involves the pericycle.

Which cellular change in an organism could be inherited by the next generation?

Answers

Answer:

Changes in DNA result in mutations, which may be beneficial, neutral, or deleterious to the organism. If these changes occur to DNA in sperm or egg cells, they could be passed onto the next generation. Evolution consists of changes in the heritable traits of a population of organisms as successive generations replace one another.

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Question 11
4 pts
All of the following are examples of maintaining homeostasis except:
O A drop in body temperature triggers shivering which generates heat; an increase in body temperature triggers
sweating which releases heat.
© By opening and closing pores in their leaves, plants continuously exchange oxygen and carbon dioxide with
the atmosphere.
O A cancerous tumor continues to grow larger and then metastasizes, spreading to new areas of the body.
O Feelings of hunger and then fullness affect the length of time between meals and quantity of food you eat,
keeping your weight near a "set point."
0 A sensor detects CO 2 levels in the blood and triggers an increase or decrease in the rate of breathing.

Answers

In biology, homeostasis refers to the mechanisms by which biological systems maintain an internal state of steady conditions. The state of homeostasis is fundamental to ensure the survival of biological systems.

All of the examples above are biological responses for maintaining homeostasis EXCEPT a cancerous tumor continues to grow larger and then metastasizes, spreading to new areas of the body.

In cancer, the homeostasis of the system is lost and then cancer cells proliferate in an uncontrolled fashion, thereby leading to metastasis.

Normal cells lose their homeostasis and convert into cancer cells by accumulating mutations that lead to the inactivation of tumor suppressor genes and/or activation of oncogenes.

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Which of the following is NOT a physical change?
A Bursting of a firecracker
B. Boiling water
C. Melting ice

Answers

A. Bursting a firecracker
That’s the answer
A is the correct answer

Steroids contain a 4-ring structure.

True

False

Answers

Yes, they do(True). steroids are related to a characteristic molecular structure composed of 17 carbon atoms—arranged in four rings conventionally denoted by the letters A, B, C, and D—bonded to 28 hydrogen atoms.

Which statement describes an environmental consequence of sustainable land use?

1.Building a park instead of more housing may be unpopular with residents.
2.When common lands are protected, land degradation slowly disappears.
3.Residents praise community leaders for preserving land for a new park.
4.If common land use is restricted, it can slow down the economy.

Answers

Answer:

I did the test before it is B

Explanation:

Answer:

The answer is B

Explanation:

The scientific method is an iterative of

Answers

Answer:process of science

Explanation:

how does a liver cell differ from a palisade cell?

Answers

Answer:

Please refer to: All cells contain a nucleus and a nuclear envelope and the liver cell is no exception. It has exactly the same control over the cell as the palisade nucleus does. To keep it all together, it is surrounded by a cell membrane. This semi-permeable matter allows information to be spread from cell to cell.

Explanation:

I'm not sure but hope it helps.

what type of ecosystem service is the bee.
A. Provisioning
B. Regulating
C. Supporting
D. Cultural

Answers

Answer:

Provisional (livelihood framework)

Regulating services (ecosystem cascade framework)

Please read explanation.

Explanation:

The type of ecosystem service the bee offers includes pollination and this falls under regulating service.

It also offers food and medicine and thus also offer provisioning ecosystem service

Wild bees provide a broad spectrum of

ecosystem services that range from provisioning to regulating to cultural.

Provisioning ecosystem services is the focus when using a livelihoods framework but regulating ecosystem services are also often present if using the ecosystem cascade framework

Name the main energy-
storing products of each
phase of photosynthesis.

Answers

Answer:

Rubisco

Explanation:

Why are scientific journals considered a superior resource compared to other sources of scientific information?

Answers

Scientific journals are generally specialized for distinct academic fields or subdisciplines, and they are the most important way of communicating research findings.

In order to acquire a deeper knowledge of the facts and conclusions, the research frequently challenges prevalent assumptions and the research data given in the published research findings.Scientists disseminate these research findings in scientific journals to make it publicly available to the masses.Scientists describe the study they're building on in scientific publications and journals, as well as their research methodologies, datasets and data processing tools, and their data interpretation.

On the other hand;

Scientific information is concerned with investigating the characteristics and behavior of information, the forces influencing the flow of information, and how it is being processed for optimal usability and usefulness.

It deals with the creation, gathering, categorization, retention, retrieval, interpretation, transmission, and usage of data.

Thus, from the above explained concept we can conclude and agree that:

Scientific journals are far considered superior resources as compared to the sources of scientific information due to the fact that it is scientific journals are peer reviewed(i.e. experts in the field have used different research findings and methodologies) for its validation.

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female human reproduction explaination

Answers

Answer:

Female human reproduction is the way how female humans produce.

Female human reproduction answer:

Which process plays an important role in the biogeochemical cycles of carbon, nitrogen, and phosphorus?
photosynthesis

Answers

Answer:

Decomposition

Explanation:

Their decomposition would release the nutrients stored for other plants to benefit from. This creates a sort of 'recycling' system so new nutrients can be produced and distributed.

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WILL GIVE BRAINLIEST AND 50 POINTS

which statement best describes a scatterplot ?

A- it shows how strongly two variables are related
B-it shows the averague value for each of the variables
C-it shows a line that connects a series of data points
D-it shows a frequency distribution between variables

Answers

Answer:

It shows how strongly two variables are related

Explanation:

In scatter plots the dots inside it report the values of individual data pointsThese dots also patterns when the data are taken as a whole. it is used for identifying other patterns in data.
Answer: A. It shows how strongly two variables are related

What forms life in rocks and soil,water air and life

Answers

Answer:

archaea, bacteria, actinomycetes, fungi, algae, and protozoa

PLEASE HELP ASAP FAST

Answers

Answer:

c ,this the correct answer cytoplasm ,cytoplasm a.nucles ,plasma membrane

7.
is related to the energy of motion of the particles of matter.

Answers

Answer:

Temperature measures the average kinetic energy of the particles in a substance. Thermal energy measures the total kinetic energy of the particles in a substance. The greater the motion of particles, the higher a substance's temperature and thermal energy.

Explanation:

Answer:

Temperature measures the average kinetic energy of the particles in a substance. Thermal energy measures the total kinetic energy of the particles in a substance. The greater the motion of particles, the higher a substance's temperature and thermal energy.

Explanation:

During the nitrogen cycle, through which structure are nitrogen compounds first absorb into the plant? and deposition work together to create a moraine? Waves cause erosion along coastlines and deposit sand away from the shore. Surface water in rivers causes erosion, carrying sediment that gets deposited near an ocean. Glaciers cause erosion as they melt, carrying sediment that gets deposited in a thick layer. Winds cause erosion by blowing around sand that gets deposited in large piles.

Answers

Nckxhxkxhxkxhxixhixxhuix

please hurry and help asap!!!!What phase is the indicated cell currently in?
A. Anaphase
B. Metaphase
C. Telophase

Answers

Answer:

I pretty sure its telophase cause it  looks like its stretching apart which does seem like its happening in the/a telophase

Explanation:

Solution C has a volume of 50 mL and a mass of 100 g. What is the density of the solution?

Answers

Answer:

2 g/ml

Explanation:

Density = Mass/Volume

             = 100/50

             = 2 g/ml

Which tissue is important for supports and storage? ​

Answers

Answer:

Connective tissue

Explanation:

Hoped I Helped :)

Answer:

please mark me brainliest

Explanation:

Connective tissue provides support, binds together, and protects tissues and organs of the body. Connective tissue consists of three main components: cells, protein fibers, and an amorphous ground substance. Together the fibers and ground substance make up the extracellular matrix.

Qual os três estados da água

Answers

Answer:

Los tres estados del agua son: sólido, líquido y gaseoso.

Explanation:

Explain two ways in which trachea is adapted to perform its function​

Answers

Answer:

The trachea has a number of adaptations: cartilage rings in the walls of the trachea help to keep it open. ciliated epithelium and goblet cells to clean the air before it reaches the lungs.

The two approaches in which the trachea is adapted to carry out its characteristic​:-

The trachea serves as a passage for air, moistens and warms it even as it passes into the lungs, and protects the breathing floor from an accumulation of foreign debris.The trachea is coated with a wet mucous-membrane layer composed of cells containing small hairlike projections referred to as cilia.

What is the trachea?

The trachea normally referred to as the windpipe is a tube approximately 4 inches long and much less than an inch in diameter in the majority. The trachea begins surely underneath the larynx (voice field) and runs down to the again of the breastbone (sternum). The trachea then divides into smaller tubes known as bronchi: one bronchus for each lung.

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Which of the following is a true statement about extinction?
A. Extinction is the death of a species or a larger taxonomic group.
B. It is estimated that presently we are losing hundreds of species every year due to human activities.
C. It is estimated that as much as 38% of all species, including most primates, birds, and amphibians, may be in danger of extinction before the end of the century.
D. All of the statements about extinction are true.
E. Many extinctions are associated with climate change.

Answers

Answer:

Extinction is defined as the complete elimination or termination of one of a kind of organisms or different taxa, generally species. The extinction of species can be due to human activities, climate change, loss of habitats, and other natural causes. Hence, the correct option is D.

Explanation:

Extinction is the end of a certain group, taxa, phylum, or most prominently species. There are several reasons for the extinction of species or larger taxonomic group, such as human activities, the introduction of dangerous species, loss and destruction of habitats, illegal trafficking, climate change, and human activities.

Human activities such as deforestation, urbanization, and mining are some of the major causes of the loss of species and their extinction. Due to these activities, hundreds and thousands of floras and faunas are on the verge of extinction.

Approximately more than a thousand species have been extinct over the past 500 years. Almost 38 percent of the known species have been extinct or will be extinct, which includes primates, birds, animals, and amphibians. Some of the examples of extinct species are Dodo, passenger pigeon, mammoth, and Pierolapithecus.

Climate change is one of the major reasons for the loss of biodiversity. Recent research has estimated that the majority of the species will be lost over the next fifty to 50 years.

in 2020, the north atlantic right whale population included about 400 individuals, double the size it was in 2000. what is your best estimate of this population's annual per capita growth

Answers

Answer:

most endangered large whale species, with less than 400 individuals remaining. Learn more about North ...

The Science of Biology: Question 1: Explain how sunlight is the primary source of energy for your own life? Question 2: In terms of energy, what is the difference between glucose and ATP? Question 3: Explain the role of a hypothesis in a scientific investigation? ( Will Mark Brainliest if correct). ​

Answers

Answer:

cause sunlight is the basic source of energy which is used in our daily life

Explanation:

sunlight is the main source of energy for the earth. without sum nothing is possible . sunlight is relatable in every systematic flow. like wise in photosynthesis, life cyle,drying food or fruits ,etc. moreover!

Which theory allows material to pass in and out of the cell

Answers

Answer:

water

carbon dioxide and

oxygen

Answer:

cell membrane

Explanation:

It controls what moves in

and out of the cell. Cell membranes only

allow some solutes (solids) to move across it. Movement across the membrane depends on size and type of the solute

Ymerereel kslaf unscramble

Answers

Answer:

Hey friend

how can I help you

Answer:

Erlenmeyer Flask

Explanation:

It is a type of lab equipment

See this link: https://studylib.net/doc/8564063/lab-equipment-worksheet

How has farming had an impact on the environment.​

Answers

Answer:

agriculture leads to more oxygen production and more carbon consumption.

Answer:

agriculture

Explanation:

According to the graphs of a marine food chain, what statement(s) describe what happened to the sea otter population after the
introduction of killer whales? Select all that apply.
es )l
A)
Sea otter populations migrated to warmer waters.
B)
Sea otter populations preyed upon fewer sea urchins.
9
Sea otter populations decreased with the addition of a predator.
D)
Sea otter populations increased as the producer level increased.
E)
Sea otter populations increased in the presence of an additional predator.

Answers

Answer:

B and C

Explanation

These are correct I did it in usatestprep.

Sea otter populations preyed upon fewer sea urchins. Sea otter populations decreased with the addition of a predator. Hence option B and C is correct.

What are predator?

Predator is defined as an organism that mostly hunts and consumes other organisms for food. Predators have a significant impact on an ecosystem. By dispersing seeds and nutrients from foraging, they alter the ecosystems' structure. Carnivores, or animals that only consume other animals, include predators. Scavengers are predators that cannot always kill their own prey and are classified as predators.

The number of sea otters declined, the number of sea urchins increased, and the amount of kelp also decreased when orcas began eating sea otters in the kelp forest habitat. Because sea urchins eat kelp and sea otters eat sea urchins, this is the case.

Thus, sea otter populations preyed upon fewer sea urchins. Sea otter populations decreased with the addition of a predator. Hence option B and C is correct.

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