According to the law of conservation of mass, what is the mass of sodium oxide (Na2O) formed in this reaction?
Answers
Answer:
123.96 grams
Explanation:
Add the numbers underneath 4Na and O2 (^3 ^)
Related Questions
Food chains can be displayed with
pictures or words. The arrows
between each picture or word
show what?
A. The direction of animals traveling in their
habitat.
B. The direction that food energy is transferred.
C. The direction that prey will go to hunt for
predators.
D. The direction of the sun helping animals
make their own food.
Answers
Answer:
B
Explanation:
Which factor would cause two specialized tissues that contain identical 4 points
chromosomes to function differently?
(1) specific sections of DNA molecules in the chromosomes are activated. (2) All of the sections of DNA molecules in the chromosomes are activated (3) specific sections of the amino acid molecules in the cytoplasm are activated.
(4) All of amino acid molecules in the cytoplasm are activated
Answers
PLEASE HELP ASAP I'M BEING TIMED!!!!!!!!!!!!!!!!!!!!!!!!! HELP ME RIGHT NOW, PLEASE!!!!!!!!!!!!!!
What is the function of the type of muscle that is pictured below?
A) support and movement of the skeleton
B) movement of food through the digestive system
C) contraction and relaxation of the heart
D) generation and conduction of electrical signals
Answers
Answer:
it's a okkkkkk
a
its aaaa
Answer:
I believe it is C.contraction and relaxation of the heart
Explanation:
A gene that has many possible genotypes such as brown, red, blonde, green, blue, or hazel is known as a
A polygenic trait
B single gene trait
C polygraphic trait
D single ladies trait by Beyonce
Answers
Answer:
I think the answer would be C.
Explanation:
D is wrong for obvious reasons, elimanate any silly or impossible answers.
Since poly means muliple, and single means, not muliple (in most cases), B is elimanated.
Since Grapihic usaully refers to things that can been seen, where genic ussaully refers to more so like personality characteristics.
Carbohydrates, fats, and proteins needed for the normal functioning of our cells are obtained from
A. oxygen
B. food
C. carbon dioxide
D. vitamins
Answers
b
Explanation:
bec because food are the only thing that can contain carbohydrate fat and protein for human being
Genetic mutations introduce new gene forms in a population. For instance, the mutation that affects
hemoglobin alters the shape of the red blood cell and makes it sickle-shaped. Which statement
below would explain why the sickle-cell mutation has spread through the gene pool?
A. There is a selective advantage to having Sickle Cell Anemia.
B. This kind of mutation demonstrates a common ancestor.
C. The sickle cell mutation has no benefit.
D. Sickle cell anemia increases the risk of death.
Answers
Answer:
B- this kind of mutation demonstrates a common ancestor.
Explanation:
in order to have sickle cell anemia you need to have both recessive alleles from both parents, this recessive allele has to be continuous passed down from generation to generation on both sides, which shows a common ancestor from long ago
A student makes a model of an atom, as shown. Where should the student place a proton in the model?
A. Inside the nucleus
B. On either of the two orbits
C. Between the two orbits
D. Between the first orbit and the nucleus
Answers
which of the following are reasons that crops like soybean and palm are called cash crops?
◾️their leaves are shaped like dollar bills.
◾️they grow quickly.
◾️they make a quick profit for farmers
◾️they are used in a variety of products
Answers
Answer:
"They are used in a variety of products" or "They make a quick profit for farmers."
You would say its "They grow quickly" but I took the examine and it was incorrect.
Explanation:
This was pulled straight out of the lesson
Agriculture, or farming, is the largest driver of deforestation in which vast areas of natural forest are burned or cleared to raise cattle or grow crops. Usually forests are burned to quickly make the land available for planting. Sometimes fast growing crops, like palms and soybeans, are planted on lands cleared of their forests; these crops make a quick profit for the farmers. Palm oil and soy are used in a wide array of products ranging from toothpaste, chocolate, animal feed, and cosmetics.
Why do you think these crops are sometimes called "cash crops"?
Cash crops like palm and soy grow quickly and make money fast.
The following are reasons that crops like soybean and palm are called cash crops:
They make a quick profit for farmersThey are used in a variety of products.So, the correct options are C and D.
What are Cash crops?Unlike subsistence crops, which are grown to supply the basic needs of the farmer and his family, cash crops are agricultural products grown with the intention of being sold for profit. Cash crops are often traded on international markets and are generally produced on a large scale, often employing industrial agricultural techniques.
Cereals, fruits, vegetables, and industrial crops such as cotton, tobacco, and rubber can all be considered cash crops. Soybeans, coffee, cocoa, tea, palm oil and sugarcane are some of the most popular cash crops. The economy, environment and social welfare of a place can be affected by cash crops in both positive and negative ways.
So, the correct options are C and D.
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Why are pollen grains useful when studying the climate history of a region?
Answers
Answer: D on edge
Explanation:
They provide clues about the types of plants that grew in a region at a particular time.
In addition to myosin, what other protein is involved in skeletal muscle contraction? O A. collagen O B. actin о C. АТР O D. keratin
Answers
Actin.
The myosin and actin filaments are the 2 protein filament types involved in the sliding filament theory of muscle contraction.
What evidence is there that the 15 species of finch all evolved from one common ancestor?
Answers
All of them evolved from one rooted species, which colonized the islands only a few million years ago. This process, whereby species evolve rapidly to exploit empty eco-space, is known as adaptive radiation.
What is evidence of common ancestry and how do they explain evolution?Homologous structures provide proof for a common origin, while analogous structures show that similar selective pressures can produce similar adaptations. Alikenesses and differences among biological molecules can be used to determine species' relatedness.
Thus, adaptive radiation is one of the reasons.
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sifat sifat fizik air
Answers
Answer:
Explanation:
cair
padat
gas
Look at the diagram below. This is a model of..
HELP ILL GIVE BRAINLIEST
Answers
Answer:
A) CH4
Explanation:
My friend for this type of question you have to count the atoms you see. So you see we have 1 carbon atom in middle and 4 hydrogen answer surrounding it. Therefore, this is a model of CH4 (methane).
Look at the graph...What is the optimal temperature for this enzyme?
A. 60 degrees C
B. 45 degrees C
C. 15 degrees C
D. 35 degrees C
Answers
Answer:
B: 45 degrees C
Explanation:
However, above 40-45 degrees Celsius, enzymes are usually denatured and can no longer catalyse the reaction, because the hydrogen bonds are broken, so the enzyme permanently loses its shape. The temperature at which the reaction rate is fastest is the optimum temperature.
As per the graph, the optimum temperature for the enzyme is 45 degree Celsius. The correct option is C.
What is optimum temperature?The temperature at which the enzyme exhibits the greatest activity is referred to as the optimum temperature.
Enzyme activity decreases as the temperature rises or falls. It can even become inactive at times. It is equivalent to the body temperature of a warm-blooded animal.
The kinetic energy in the substrate and enzyme molecules is optimal for the maximum number of collisions at the optimal temperature.
At high temperatures, the enzyme's shape changes, and it no longer complements its specific substrate.
It is the temperature at which the enzyme's reaction rate is fastest. It will be the point on the graph where the line reaches a peak at 45 degrees Celsius.
Thus, the correct option is C.
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Which statement describes a forest ecosystem that has not experienced any natural disasters in the past 100 years?
A.
The types of plants that grow in the forest are changing from year to year.
B.
Faster growing conifers are replacing slower growing deciduous trees.
C.
The types of plants and animals that live in the forest are reasonably stable.
D.
The number of types of animals that live in the forest is rapidly increasing.
Answers
Answer:
C) The types of plants and animals that live in the forest are reasonably stable.
The statement that describes a forest ecosystem that has not experienced any natural disasters in the past 100 years is, "The types of plants and animals that live in the forest are reasonably stable," hence option C is correct.
What is a forest ecosystem?Along with nonliving (abiotic) elements like soil, water, air, and landforms, forests also contain living (biotic) elements like trees, animals, plants, and other life things. A forest ecosystem is made up of all of these elements.
The numerous plant and animal species residing in a forest ecosystem are generally stable if it has not recently been subjected to any disturbances or natural disasters.
Therefore, plants and animals that live in the forest are reasonably stable, so this ecosystem not experienced any natural disasters.
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Why is the question what is an plane so difficult to answer
Answers
Answer:
Look below - A plane is math related.
Explanation:
a flat surface on which a straight line joining any two points on it would wholly lie.
"the horizontal plane"
synonyms:
flat surface · level surface · the flat · horizontal
Hope this Helps!
Answer:
I Don't Know what your asking but if your trying to figure out what a plane is this might help
1. a flat surface on which a straight line joining any two points on it would wholly lie.
2. a level of existence, thought, or development.
3. completely level or flat.
4. (of a bird or an airborne object) soar without moving the wings; glide.
Also I don't know why this would be biology related.
all plant nutrients sources
Answers
Answer:
Plants require 17 essential elements for growth: carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K), sulfur (S), cal- cium (Ca), magnesium (Mg), boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), and zinc (Zn).
u guys su.ck ive asked this like 10 times
Answers
When sea ice melts, the liquid sinks and begins to move along the ocean floor. What is formed by this process?
Answers
Answer:
`
Explanation:
Describe what a normal year looks like for El Nino.
Answers
what would be some outcomes of gene editing
Answers
Answer:
i dont know
Explanation:
got no idea homey
The allele for a recessive trait is usually represented by a capital letter
True or false
Answers
Please help to solve this question.
Answers
Answer:
a. Glycolysis
b. actually, both plants and animals use glycolysis. They use these during cellular respiration and plant respiration
c. Heart tissue!
Explanation:
a. Glycolysis produces 2 ATP per glucose molecule, and thus provides a direct means of producing energy in the absence of oxygen. Lactic acid, the end product of anaerobic glycolysis.
b. In organisms that perform cellular respiration, glycolysis is the first stage of this process. In plants, this metabolic process occurs in the cytosol and plastids of both photosynthetic and non-photosynthetic organs.
c. Pyruvate is an important chemical compound in biochemistry. It is the output of the metabolism of glucose known as glycolysis. In highly oxidative tissue, such as the heart, the production of pyruvate is essential for acetyl-CoA synthesis and L-malate synthesis.
Hope this helps! If you could, please mark this as brainliest :)
An organism that is classified as anaerobic can perform respiration (1 point)
O with oxygen only.
O without oxygen.
o with hydrogen only.
O without hydrogen.
Answers
Answer:
without oxygen
Explanation:
this was the right answer for the connexus bio exam
un tejido esta formado por la union de:
Answers
Answer:
Los tejidos están formados por la unión de células relacionadas. Las células de un tejido no son idénticas pero trabajan juntas para desarrollar funciones específicas.
Name and describe 3 ways that water can be extracted, or taken out of an aquifer
Answers
Answer:
A huge amount of water exists in the ground below your feet, and people all over the world make great use of it. But it is only found in usable quantities in certain places underground — aquifers. Read on to understand the concepts of aquifers and how water exists in the ground.
Name 4 catastrophic events and their description.
Answers
Answer:
Airplane crash: it will damage the plane and the plane will fall
Building collapse: bomb squad scomisidal bomber, and more
Vehicle rollover accidents: car crashes pretty much or motor accidents
Ship accidents: when the pressure of water pulls it down or something might've damaged it
Explanation:
Which type of allele combination is the fish fin length
Codominant alleles
Dominant and recessive alleles or a combination of both Codominant and Dominant and recessive please help I will give brainliest
Answers
Answer:
Dominant and recessive genes
Explanation:
There is mutation of dominant genes
Which statement BEST describes the moon’s position in 14 days and why?
Answers
Answer:
I am pretty sure it is B
Explanation:
I think it is position B, a 3rd Quarter moon, because the moon revolves around Earth about once every 7 days.
Answer:is b
Explanation: i got a 100% on this test
In what ways do scientists measure biodiversity? Choose all correct answers