Which safety precaution is recommended when a
liquid is being heated in a test tube?

Answers

Answer 1

Answer:

running away

Explanation:


Related Questions

Describing Water Molecules Which of these statements would be true if the water molecule was linear instead of bent? Check all that apply. Water molecules are polar. Water molecules are nonpolar. Water molecules undergo hydrogen bonding. Water molecules have a linear geometry. Water molecules have a bent geometry.

Answers

Answer: These are the correct answers...

-Water molecules are polar

-Water molecules undergo hydrogen bonding

- Water molecules have a bent geomtry

Hope this helps whoever needs it

The statements that are correct about water molecules are:

Water molecules are polar. Water molecules undergo hydrogen bonding.Water molecules have a bent geometry.Water is polar molar due to the unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles - a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side).Water molecules forming hydrogen bonds with one another.Water has a bent shape is that the two lone pair of electrons are on the same side of the molecule.

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Show work

13.5mm = ?m

Answers

Answer:

0.0135

Explanation:

Move the decimal place three times to the left

Answer:

0.013 m i believe

Explanation:

What is the role of photosynthesis and cellular respiration in the cycling of matter and the flow of energy through the ecosystem

Answers

Answer:Cellular respiration in plants and animals involve chemical reactions with oxygen that release stored energy. ... Plants, algae, and many microorganisms use the energy from light, carbon dioxide from the atmosphere, and water to make sugars (food) through the process of photosynthesis, which also releases oxygen.

Explanation:

hope it helps :)

The role of photosynthesis and cellular respiration in the cycling of matter and the flow of energy through the ecosystem is the following:

The fundamental energy source of all ecosystems is the Sun, which sends a large amount of energy to Earth in the form of light and heat.

The various green plants use energy from the sun, water and nutrients from the soil, and carbon dioxide from the air to produce organic matter.

The process by which light is used as an energy source to transform CO2 into organic compounds essential for life is called photosynthesis.

The manufactured organic matter is used by the photosynthetic organisms themselves for the maintenance of their vital processes through cellular respiration.

Energy, once solar energy is transformed by producers into chemical energy by making organic matter in photosynthesis, is transmitted along with matter.

In each transfer of energy, between the different types of organisms there is a release of energy to the environment, in the form of heat.

On the contrary, matter flows cyclically, chemical elements are transferred between living beings and in the physical environment of each ecosystem.

Therefore, we can conclude that the role of photosynthesis in the cycling of matter and the flow of energy through the ecosystem is to produce the transformation not only of inorganic into organic matter, but also of light energy into chemical binding energy, oxygen is released as a waste product and is used by most organisms for cellular respiration.

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MAKING BRAINLIEST, THANKS AND FIVE STARS TO CORRECT ANSWER! PLZ AND THANK YOU! HAVE A GREAT DAY! :D
Explain the importance of the cones in cone-bearing trees?

Cones attract animals that will help with plant reproduction.

Cones are used to as food source for the plant.

The cones catch rainwater for the tree to use.

The cones provide protection to seeds from animals and the environment.

Answers

Answer:

The answer is D.

Explanation:

Feel free to mark brainliest.

Answer:

The cones provide protection to seeds from animals and the environment.

Explanation:

Cones attract animals that will help with plant reproduction. (no, because no animals are attracted to pine cones)

Cones are used to as food source for the plant. ( no because food is not stored in it, the seeds are, plants don't eat their own seeds)

The cones catch rainwater for the tree to use. (no! which tree is going to suck water from their cones?)

ANSWER PLEASEEEEE TYYY

Answers

Answer:

A-D

Explanation:

They both lie on the same ring.

I hope this helps! Happy learning, friend :)

BEST ANSWER GETS BRAINLIEST 5 STARS THX and FOLLOW


Which sentence correctly explains the process and conditions needed for hail to form? (worth 30 points)

Group of answer choices

A. The temperature of the air and the temperature of the cloud must be below zero.

B. Liquid water requires temperatures above 0 °C in order to remain in a liquid state.

C. A form of precipitation requires melting and refreezing as they fall towards the ground.

D. Ice chunks move around inside a cloud, bouncing into water droplets and growing as they fall.

Answers

Answer:

a

Explanation:

Answer:

Answer C: is the best choice

Explanation:

please helpppppp meeee

Answers

Answer:

what happened my friend is everything fine well 1 + 1 equals 2 got it?

Lolhow am I supposed to help there is nothing there

Energy in an ecosystem flows directly from
a. producers to tertiary consumers
b. producers to secondary consumers
C. tertiary consumers to secondary consumers
d. secondary consumers to tertiary consumers

Answers

energy enters an ecosystem through photosynthesis. By feeding on plants and on one another, animals play an important role in the movement of the matter/energy though. they also influence the quantity of plant and biomass present. so the anwser is D, secondary consumers to tertiary consumers

Answer:

''d' is correct.

Explanation:

Producers-->Primary Consumers-->Secondary Consumers-->Tertiary Consumers

ASAP PLEASE

All living things maintain a balance within their cells and with the environment through the process of
Group of answer choices

Evolution

Homeostasis

Growth

Development

Answers

Answer:

its Homeostasis

Explanation:

hope this helps

Answer:

its (c) Growth.

Explanation:

Basically living things contain "growth" to make cells out of living things like plants or animals.

there's your answer mate :)

please help me this due today at 4:00 whoever answers me I give him a crown (20pts)

1: Every single cell has a ________.

2:Explain the fluid mosaic model of the cell membrane.

Answers

1 every single cell has cytoplasm, cell membrane and DNA

2 The fluid mosaic are various observations regarding the structure of functional cell membranes .

Answer:

1: Nucleus

2: The fluid mosaic model describes the cell membrane as a tapestry of several types of molecules (phospholipids, cholesterols, and proteins) that are constantly moving. This movement helps the cell membrane maintain its role as a barrier between the inside and outside of the cell environments.

Explanation:

I looked this up. I hope this helps you.

Which of the following structures is at the same level organization as the mitochondrion in a plant cell

Answers

Answer:

Any other cell organelles would be at the same level of organization as a mitochondria.

What is a big difference between to
biosphere and the geosphere?

Answers

Bio is Life Geo is Earth

As succession reaches equilibrium or climax the biodiversity:
A. Increases
B. Decreases

Answers

Answer:

B

Explanation:

The answer is decreases

Which is most directly responsible for water’s unique properties

Answers

It's Hydrogen Bonds

Explanation:

Water has some unusual properties due to its hydrogen bonds. One property is cohesion, the tendency for water molecules to stick together. The cohesive forces between water molecules are responsible for the phenomenon known as surface tension.

name of locomotory and breathing organs of shark

Answers

Answer:

Respiratory system

Explanation:

Like other fishes, sharks extract oxygen from water as it passes over their gills.

raspatory system? idk

choose all the answers that apply
without decomposers:
chemical nutrients would not return to the soil
dead organisms would pile up
the sun's energy could not be used
matter would not be recycled
an ecosystem is unbalanced
MULTIPLE CHOICE!!​

Answers

Here are the correct answers from Odyessyware! I got 100% correct, so the answers are: dead organisms would pile up, and matter would not be recycled.

Answer:

chemical nutrients would not return to the soil

dead organisms would pile up

matter would not be recycled

an ecosystem is unbalanced

Explanation:

What are the similarities between prokaryotes, eukaryotes and viruses?

Answers

Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus and has other membrane-bound organelles that allow for compartmentalization of functions.

Small hydrophilic molecules are transported through a cell membrane by

Answers

Proteins which form channels may be utilized to enable the transport of water and other hydrophilic molecules; these channels are often gated to regulate transport rate. In facilitated transport, hydrophilic molecules bind to a "carrier" protein; this is a form of passive transport

Definition of toxins

Answers

Answer:

A poisonous substance that is a specific product of the metabolic activities of a living organism and is usually very unstable.

Explanation:

Which of the following statements is not part of the cell theory. 1. Cells are the basic unit of structure and function in all living things
2. All cells are produced from other cells
3. Only animal cells are composed of cells
4. All living things are composed of cells

Answers

Answer:

your answer is option 3

in mutualism neither organism benefits true or false

Answers

Common types of symbiosis are categorized by the degree to which each species benefits from the interaction: Mutualism: In mutualistic interactions, both species benefit from the interaction. ... Commensalism: In commensalism, one organism benefits while the other organism neither benefits nor suffers from the interaction.

HELP ASAP!!!!!

Which of the following best describes the motion of the object in this p-t graph

Answers

Answer:

I think its the third one should be

Answer:

The graph above shows that the position of the body is changing with time exponentially and it is accelerating. The velocity of the body is changing with time and as a result the distance it is covering per time will be changing. Generally the graph of positions against time for a body that is accelerating will always look like the diagram above. For constant velocity motion, the graph will be a straight line with slope equal to the velocity of the body.

Explanation:

The velocity - time graph will for a undergoing the motion described by this graphics will be a straight line graph with it slope equal to the acceleration of the body.

NEED HELP ASAP!! due at 11:59

Answers

There’s nothing here to answer.
Yeah put a different picture

1. Floods can devastate an ecosystem, however they can also have a positive impact. Please explain the positive impacts major floods can have on the ecosystem.
2. How do seasonal changes in temperature, water availability and sunlight affect ecosystems?
3.Propose 5 ways that humans can help minimise the negative effects both natural events and human impact can have on ecosystems. (Not from google )

Answers

Answer:

1. Whilst flood events are devastating to humans they are a natural occurrence that can provide negative and positive important environmental impacts.

Flooding helps spread organic material, nutrients, and sediments which enrich floodplain soils. They also replenish water resources and trigger life processes such as bird breeding events, migration, and seed dispersal in flora and fauna adapted to these cycles, while good soil moisture can allow crops and pastures to be established.

Help please asap .........

Answers

Answer:

2) an increase in temperature from 70°C to 80°C

Hope this helps!

what is the point on an object where the force of gravity is considered to act A. center of mass B. top of an object C. middle of the object D. center of gravity​

Answers

Answer:

D. Center of gravity.

Explanation:

Gravity always acts downward on every object on earth. Gravity multiplied by the object's mass produces a force called weight. Although the force of an object's weight acts downward on every particle of the object, it is usually considered to act as a single force through its balance point, or center of gravity.

Answer:

D. center of gravity​

Explanation:

Which trait can be passed from one generation to the next by genes? A. The ability to speak German B. Red hair color C. A broken arm D. A shaved head
Plz help me ​

Answers

Answer:

Red hair color

Explanation:

i promise you im right.

Answer:

red hair color.

Explanation:

because red hair is a gene that you can get from you parent or some other family members. a shaved head you cut, speaking german is a trait YOU learn and that you don't get from a member of your family

Plate boundaries where plates move toward each other are called
transform boundaries.
convergent boundaries.
divergent boundaries.

Answers

convergent boundaries :)

find cos A if sin A=3/5​

Answers

Explanation:

for sin we divide the opposite by the hypotenuse

and for cos we require the adjacent divided by hypotenuse

we can get it through

a²+ b²=c²

ur unknown in this case is the adjustment which you can either substitute with a or b

a² + 3²=5²

a²=5²-3²

a²= 25-9

a²= 16

[tex] \sqrt{a ^{2} } = \sqrt{16} [/tex]

a=4

so that now we have found that I just sent we can find the cos of A

cos A= ⅘

Anna wanted to see what battery lasted the longest. She put each battery into a clock and recorded the time that the clock stopped. She used Duracell, Energizer, Kroger brand, and EverReady. Independent Variable (IV): _Type of clock_____________________________________________ __________________________________________ Dependent Variable (DV): ______________________________________________ Control: _____________________________________________________________ Constants:____________________

Answers

Answer:

Independent variable: Type of battery

Dependent variable: Time the clock stopped

Control: None for this experiment

Constants: Same type of clock

Explanation:

Independent variable in an experiment refers to the variable which the experimenter changes or manipulates in order to bring about a measurable response. In this case, the independent variable is the TYPE OF BATTERY USED.

Dependent variable is the variable that responds to changes made to the independent variable. It is the measured variable in an experiment. In this case, the dependent variable is the TIME THE CLOCK STOPPED FOR EACH BATTERY

Control is the group that does not receive the experimental treatment. In this case, NO control group is USED.

Constant is the variable that the experimenter keeps unchanged throughout the experiment for all groups. The constant in this experiment is the CLOCK USED.

Answer:

Independent variable: Type of battery

Dependent variable: Time the clock stopped

Control: None for this experiment

Constants: Same type of clock

Explanation:

Other Questions
whats 0 divide by 0 heilpoudjcbjdfvhckdbcu k hybhlxbc jhvwdgv Pls help Im timed!! Please answer this correctly without making mistakes When making informed decisions about health products or procedures, it's important to consider __________.A.risks, costs, and cautionB.credibility, risks, and costsC.risks, credibility, and friends' referralsD.none of the abovePlease select the best answer from the choices provided.ABCD plzzzzzzzzz I need to know for school!!!What is the definition of law of conservation of energy??? Question 1 Vanualui YI (1.JO23 pollics)5We interrupt ideas into our current understandings is known as A bottle of water is 2/3 full. You drink 1/4 of the water. Use a model to find the portion of the bottle of water that you drink. NO ONE IS HELPING ME PLEASE IM FINNA CRY I SWEAR I BEGGING YOU!!!! THIS IT DUE TODAY!!! (50 POINTS) NO COPY AND PASTEING PLEASE1. What do the graphs show? How do you know? 2. How many white people lived in New England in 1700? How many black people lived in the Chesapeake Colonies in 1740? 3. Which populations increased and decreased in the time periods shown? 4. What other conclusions can you draw from the graphs? What did early farming villages in India depend on?A. the summer monsoonOB. the winter monsoonOC. the summer typhoonO D. the winter typhoon please help with #6-7 In its ruling on the Civil Rights Cases of 1883, the Supreme Court stated that a. the law applied to other minorities besides African Americans.b. individuals included businesses, clubs, and other organizations.c. civil rights included the freedom to use all public facilities.d. the denial of equal accommodations was similar to slavery. Factorise fully-y - 6this is my last question for today, right answer will be marked brainiest GIVING ALOT OF POINT IF YOU GET IT RIGHT The Protestant Reformation resulted in what? Mark only one oval.A-the breakup of the Catholic Church into many different versions of Christianity.B-religious beliefs no longer being taught in schools.C-a more unified EuropeD-the creation of the Islamic Religion Which example is not an advantage of b entrepreneurships Which term best describes what holds healthcare workers responsible for reporting their suspicions of suspected child abuse or neglect?1. patient confidentiality2. mandated reporting3. child protective services4. ethical responsibility PLEASE HELP MEE ASAP! For each of the following cases [(a), (b), and (c)], (I) state whether the study should be observational or experimental. (II) state whether the study should be run blind, doubleblind, or neither. If the study should be run blind or double-blind, who should be blinded?(a) An investigation of whether taking aspirin reduces ones chance of having a heart attack.(b) An investigation of whether babies born into poor families (family income below $25,000) are more likely to weigh less than 5.5 pounds at birth than babies born into wealthy families (family income above $65,000).(c) An investigation of whether the size of the midsagittal plane of the anterior commisssure (a part of the brain) of a man is related to the sexual orientation of the man. How does eating food benefit an animal?Select all that apply.The animal gets raw materials from the food.The animal gets energy from the food.The animal gets water from the food.The animal gets heat from the food. help find missing angle?? A skier (down a straight course) is able to enter the starting gate with a speed of 1 m/sec and the average acceleration down the hill was 3 m/s2. Ifthe skier covers the course in 10 sec, how fast was he moving at the bottom of the course?O31 mO 13 m/sO-29 m/sO 31 m/s