Answer:
chromosomes line up in the middle of the cell
What’s the answer ?
Answer:
45 kJ
Explanation:
Answer:
45 kJ
Explanation:
A science class is learning about exothermic reactions, which are reactions that transform chemical energy into heat. The students combine substance X and substance Y in a beaker. A chemical reaction between X and Y creates new substance Z. How could the students tell whether the reaction is exothermic?
A. They could measure the change in mass of substance X and substance Y using a balance.
B. They could measure the increase in temperature of the mixed substances using a thermometer.
C. They could measure how long the chemical reaction lasts using a stopwatch.
D. They could measure the volume of substance Z using a graduated cylinder.
Answer:
c
Explanation:
The students could tell whether the reaction is exothermic by measure the increase in temperature of the mixed substances using a thermometer.
What is exothermic reactions?Those reactions which produces heat in the form of energy is known as exothermic reaction.
So to tell whether the reaction is exothermic in nature student should measure the temperature of the reaction beaker befor adding the reactants and after the mixing of reactants.
They could measure the change in mass of substance X and substance Y using a balance, how long the chemical reaction lasts using a stopwatch and volume of substance Z using a graduated cylinder are not considered as they have relation with heat.Hence student could measure the increase in temperature of the mixed substances using a thermometer.
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What are some of the Causes of air pollution in Utah, and what Effects does that have on you and/or society?
Answer:
cars
Explanation:
Answer:
well I don't live in Utah but I have a cabin up there. The air can be caused by the gas coming out of cars and trucks and burning solid fuel. I think it effects Utah's people and society because them breathing the bad chemicals goes through their lungs and will cause them to have breathing problems.
Explanation:
Hello! Could somebody help? *spam answers not tolerated*
How does the ocean affect the rate of accumulation of [tex]CO_{2}[/tex] in the atmosphere?
increases it
decreases it
maintains it at a constant rate
Answer:
The ocean is a large CO2 sink because of its large surface area. The CO2 emissions are caused by human and manufacturing activities which some of them are absorbed in the ocean because CO2 is partly soluble in water. Thus, the answer is CO2 is decreased in the process.
CO2 is part of the carbon cycle and as such, moves from the land to the atmosphereby human burning of fossil fuels and forest fires,. But CO2 also moves from the atmosphere into the oceans when when the solubility is right - this is called an ongoing "flux" or movement of CO2 in and out of the oceans. Hence the oceans act as a kind of buffer to ensure that not too much CO2 remains in the atmosphere and hence the greenhouse effect will not get too strong.When the oceans are colder, they can absorb more CO2 out of the atmosphere, and when they warm up, they tend to release it back into the atmosphere. However, global warming is also now transferring heat from the atmosphere to the oceans and so the oceans are less inclined to absorb excess CO2 from the atmosphere. Also, as the oceans absorb excess CO2 from the atmosphere, this tend to make the salinity of the oceans become more acidic.
GOOD LESSONS ❄
the half-life of sodium-24 is 15 days. A laboratory technician measures out a 72 g sample. Approximately how many grams of sodium-24 would remain after 45 days?
Answer: 9 grams left After 45 days
Explanation:
Given,
Half life of sodium-24 = 15 days
Measured Sample = 72 grams
After 45 days how many grams remains is :
Number of half lives = time elapsed / half life
Number of half lives = 45 days / 15 days
Number of half lives = 3
At time zero total amount = 72 g
After first half life = 72 g/ 2= 36 g
At 2nd half life = 36 g/2 = 18 g
At 3rd half life = 18 g/2 = 9 g
Hence After 45 days 9 grams left.
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PLEASE HURRY!!! Why was it important to establish the Clean Air Act?
a. to reduce the need to study the effects of dirty air on human health
b. to determine ways to reduce the number of premature deaths per year
c. to create a regulation that makes any activities that pollute the air illegal
d. to make sure that no government activities polluted the local atmosphere
Answer:c
Explanation:
I think its this one because its the one that makes the most sense
Answer:
c. to create a regulation that makes any activities that pollute the air illegal...
Explanation:
following a volcanic eruption which event is usualy the last one to be observed
Answer: usually the lava flowes out and starts burning down buildings and sturctures and by that happens people usually have evacutated the premises.
Explanation:
Answer:
A. grasses begin to grow in soil with organic matter
B. tress begin to grow in thick rich soil
C. mosses begin to grow in thin rocky soil
D. lichens begin to cover bare rock
It would be B. because that comes last.
Explanation:
Whenever a volcano erupts, it puts a layer of rock over everything. Basically, over years and years, lichens will start growing and breaking down the rock. A bunch of years later, mosses will begin to grow in the "soil" that the lichens broke down. When the rocky dirt becomes actual dirt, grasses will start to grow. After that shrubs, and then trees.
Hope this helped! :)
Which statement best describes the acceleration of the box
Answer:
c please tell me if im wroung
Answer:
I think it is C. I remember taking a test like this before.
Explanation:
Identify each type of disturbance
Answer:
Explanation:
Acid-base disturbances have profound effects on the body. Acidemia results in arrhythmia, decreased cardiac output, depression, and bone demineralization. Alkalemia results in tetany and convulsions, weakness, polydipsia and polyuria. Thus, the body will immediately respond to changes in pH or H+, which must be kept within strict defined limits. As soon as there is a metabolic or respiratory acid-base disturbance, body buffers immediately soak up the proton (in acidosis) or release protons (alkalosis) to offset the changes in H+ (i.e. the body compensates for the changes in H+). This is very effective so minimal changes in pH occur if the body is keeping up or the acid-base abnormality is mild. However, once buffers are overwhelmed, the pH will change and kick in stronger compensatory responses. Remember that the goal of the body is to keep hydrogen (which dictates pH) within strict defined limits.
What is the difference between stressed and bleached coral?
PLEASE I BEG YOU
Answer:
When corals are stressed by changes in conditions such as temperature, light, or nutrients, they expel the symbiotic algae living in their tissues, causing them to turn completely white. Warmer water temperatures can result in coral bleaching.
no. free poijnts ,,,,,,,
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What is the result of a decrease in salinity in the ocean? SELECT ALL THAT APPLY. (Hint: means 2 or more answers!)
sunlight is bent at a smaller angle
sunlight is bent at a greater angle
the electrical conductivity of sea water increases
the electrical conductivity of sea water decreases
Answer:
The correct answers are sunlight is bent at a smaller angle and the electrical conductivity of seawater decreases.
Explanation:
Part of the Appalachian mountain range is at the same latitude as Tokyo how would their climates compare
Answer:
Explanation:
they compare because tokyo is closer to the equater and that means it would be a little warmer
Describe ‘selectively permeable’ in your own words.
Selective permeable is when cellular membranes only let particular or select molecules enter or leave the cell.
I hope that helped! Good luck! ✨✌
Answer: Specifically permeable methods a layer permits the section of certain atoms or particles and hinders the entry of others. The ability to channel sub-atomic vehicle thusly is called specific penetrability.
Explanation:
Which force is a contact force
A. Leaves falling
B. A bike Braking
C. A magnet pulling
D. Lighting forming
Answer:
B. a bike braking
Explanation:
It involves friction! Hope this helps!
Amani wants to know if crushed ice or whole ice melts faster. She puts the whole ice in a bowl on the kitchen counter. She puts the crushed ice in a bowl in the oven. Lastly, she times both bowls of ice to see which melts fastest. Is this a valid experiment? Why or why not?
Yes,
Because she wants to know which melts faster so she puts a bowl of crushed ice in a oven, which in then can melt it. If she turns on the oven light she will be able to understand if it melts.
If she leaves it out on the counter the regular un-crushed ice, she can see if that is also melted faster but this is in fact a valid experiment.
What does it accomplis
Answer:
F
Explanation:
He walked up the ramp but a shorter distance. He also would have exert more force for the ramp some it is at a angle /.
Manoa falls drops 153 feet, measured the bottom to be 663 liters per second
Likeke falls drops 17 feet, measured the flow of water at the bottom to be 180 liters per second
Waimea falls drops 52 feet, Measured the flow of water at the bottom to be 332 liters per second
Rank the gravitational potential energy from greatest to least
Answer:
Manoa
waimea
likeke
Explanation:
Two body systems work together to help remove waste products from blood. What are these two systems?
Answer:
circulatory and excretory
plz brainliest
Explanation:
Your circulatory system carries oxygen, water, and nutrients to cells throughout your body. Wastes from the cells are eliminated by your respiratory system, your excretory system, and your skin. Your nervous system controls all these activities with electrical impulses.
The organ systems which are working together to helps to remove waste products from blood are circulatory system and excretory system.
What are organ systems?Organs systems are groups of organs joined together to perform specific functions in body. There are various organs systems in our body such as respiratory system, circulatory system, digestive system, excretory systems etc.
Among which, circulatory system is circulating the pure blood and oxygen through out our body. It removes wastes from blood and purify blood and oxygenate it.
Excretory system is removing liquid and solid wastes from out body with help of a pair of kidneys. They contains a large number of sieve like structure called nephrons which filter out the urine. Therefore, the organs systems helps to remove waste products are circulatory system and excretory system.
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The elephant toothpaste reaction and the reaction of sugar and sulfuric acid are examples of exothermic reactions. How do you know if an exothermic reaction has occurred?
HALP
Answer:
Here at science made simple we are keen to inspire not only the next generation of scientists but also the next generation of science communicators. Supporting work experience students each year is an important part of what we do. Our work experience students get a chance to see a range of the activities that science made simple is involved with and we always set them challenge to produce some science communication themselves, whether designing a demo, delivering a short presentation or, in this case, writing a blogpost that includes all of these!
We hope you enjoy this from one of our latest work experience students, Bilaal, we loved having him in the office and think he’s got a promising career ahead of him.
————————————————————————————————————————–
This blogpost looks at two types of reactions: exothermic and endothermic. We’ll also be looking at reversible reactions– reactions in which the products can react to remake the original reactants. Plus, a great demonstration of an exothermic reaction.
Explanation:
Identify the molecule that is a carbohydrate.
propylene
methane
poly-saccharide
lipid
NEED HELP ASAP!!!
Which answer best describes the continental shelf?
75-mile shallow flat area just off coastlines
thick deposits of sediments carried out from land
the surf area along coastlines
area of land that drops toward deep ocean basins
The answer that best describes the continental shelf is thick deposits of sediments carried out from land. The correct option is b.
What is a continental shelf?Geologists refer to the portion of the continental margin between the shoreline and the shelf break—or. In the absence of a discernible slope, between the shoreline and the point where the depth of the adjacent water is roughly between 100 and 200 meters—as the "continental shelf."
Where the continental shelf stops, the continental slope starts. It serves as a dividing line between the oceanic and continental crusts, much as its name suggests.
The continental slope separates the crusts of the continents and the oceans. Gravity's effect causes soil, boulders, and debris to eventually wash down the steep sides of a continental slope over time. At the bottom of the slope, they amass into a clump.
Therefore, the correct option is b, thick deposits of sediments carried out from land.
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What does it accomplish
Answer:
wait what the question about
Explanation:
Match the definitions below with the correct component of the scientific method:
1.
Analyze your data and relate it back to your hypothesis.
2.
Define a problem to focus the goal of your experiment.
3.
Obtain information while conducting your experiment.
4.
Make a prediction about the outcome of your experiment
5.
Use your senses to gather information around you.
6.
Design an experiment and conduct trials to assess your hypothesis.
a.
Make observations
b.
Conduct testing
c.
Collect data
d.
Draw conclusions
e.
Ask questions
f.
Form a hypothesis
Sayyid drew a diagram to compare the gravitational and electromagnetic forces.
Which label belongs in the area marked X?
is attractive only
acts within the nucleus
attracts and repels
has an infinite range
Answer:
d
Explanation:
Help please for 10 points
Answer:
Sample Response: Only characteristics that are coded for by genes can be inherited. The shape of a person's face is inherited because this characteristic is coded for by genes. Characteristics that are due to environmental factors cannot be inherited. A scar due to an injury cannot be inherited because this characteristic is a result of an environmental factor.
Explanation:
Answer:
the shape of a persons face, usually the shape
of a person's face can be inherited because of genes for example I have a round face in my genes c:
HELP ME PLEASE ITS DUE 11:59 TODAY
Im sorry but its a pdf i can write on it :(
Who was the first person to see cells under the microscope and give them a name?
Answer:
Robert Hooke
Explanation:
An atom contains 3 protons, 3 electrons, and 4 neutrons. Which of the following statements correctly describes the nucleus of this atom?
Answer:
The element is Lithium because it has atomic number of 3
ATOMIC NUMBER=NUMBER OF PROTONS
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What are the advantages of using nuclear energy instead of oil and coal to produce energy?
Answer:
The advantages of nuclear energy:
*produces low-cost energy
*it releases zero carbon emissions,
*there is a promising future for nuclear technology
*it has a high energy density
*it is reliable
hope this helps, have a great day! :D
Answer:
this? ppl weren't rlly helping so here ya go u don't have to use it :p