Answer:
C
Explanation:
2Mg + O2 → 2MgO
got it right on edge 2020
Considering the law of conservation of matter, the correct answer is third option: 2 Mg + O₂ → 2 MgO
The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.
Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts.
So, in the case of Mg + O₂ → MgO, you have:
Left side: 1 Mg and 2 O. Right side: 1 Mg and 1 O.The coefficients of each molecule below indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.
By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.
So, balancing the O to obtain the same amount in the reactants and products you get:
Mg + O₂ → 2 MgO
So you have:
Left side: 1 Mg and 2 O. Right side: 2 Mg and 2 O.
Since you still don't have the same amount of Mg on both sides, the equation is not balanced. Therefore, balancing the equation again:
2 Mg + O₂ → 2 MgO
So you have:
Left side: 2 Mg and 2 O. Right side: 2 Mg and 2 O.Now you have the same amount of each element on each side of the reaction, so the reaction is balanced.
Finally, the correct answer is third option: 2 Mg + O₂ → 2 MgO
Learn more:
https://brainly.com/question/14245470?referrer=searchResultshttps://brainly.com/question/12402422?referrer=searchResultsHow are solids, liquids, and gases the same?
Answer:
they all take up a certain amount of space and they also have mass like every other thing thing in this world :)
Explanation:
Cell Type Dichotomous Key 1a cell has a nucleus and organelles → go to # 2 1b cell has no nucleus or organelles → bacterial cell 2a cell has a cell wall → go to # 3 2b cell has no cell wall → animal cell 3a cell has chloroplasts → plant cell 3b cell has no chloroplasts → fungal cell What type of cell is A? A) animal B) bacterial C) fungal D) plant
Answer: fungal cell What type of cell is A? A) animal B) bacterial C) fungal D) plantell Type Dichotomous Key 1a cell has a nucleus and organelles → go to # 2 1bCells are of two types: eukaryotic, which contain a nucleus, and prokaryotic, which do not. Prokaryotes are single-celled organisms, while eukaryotes can be either single-celled or multicellular.
Explanation:
Answer: D. Plant
Explanation:
Because it have a chloroplasts
Some preganglionic neuron synapses with the cell body of the
postganglionic neuron in the
ganglion
These ganglia are linked together to form the
Name some of the tissue/organs are innervated by these neurons:
Other preganglionic neurons pass through the sympathetic trunk and
synapse with the postganglionic neuron anterior to the spinal cord in
ganglia.
The axons of these preganglionic neurons are called
nerves.
Name some of the tissue/organs are innervated by these neurons:
The sympathetic nervous system also send neurons directly from the
spinal cord to synapse onto the
gland.
This would cause the release of
into the
blood.
Answer:
The cell bodies of the preganglionic neurons are in the brainstem or spinal cord of the central nervous system (CNS). The cell bodies of the postganglionic neurons are in autonomic ganglia located peripherally. Axon terminal of preganglionic neurons synapse on dendrites and cell bodies of postganglionic neurons.
The cell bodies of the postganglionic neurons are in autonomic ganglia located peripherally. Axon terminal of preganglionic neurons synapse on dendrites and cell bodies of postganglionic neurons.
What is nervous system and its function?The nervous system is the major controlling, regulatory, and communicating system in the body.
Thus, cell bodies of the postganglionic neurons.
To learn more about nervous system click here:
https://brainly.com/question/13487019
Select the three macronutrients found in fertilizers.
1.phosphorus
2.hydrogen
3.nitrogen
4.zinc
5.potassium
6.carbon
Answer: The correct choices are:
1. phosphorus
3. nitrogen
5. potassium
Explanation: These choices have been confirmed correct.
3)
As blood sugar levels rise in the body, insulin is released by the pancreas to lower the levels,
This process allows your body to maintain normal blood sugar levels and is called:
A
homeostasis
B)
cell membrane
C)
glycogen
D)
glucose
answer:glycoge
explanation: insulin and glucagon help maintain a state called homeostasis in which conditions inside the body remain steady. When blood sugar is too high, the pancreas secretes more insulin. When blood sugar levels drop, the pancreas releases glucagon to raise them.
this is all what I know
I hope it help you
Describe any three factors that could have an impact on the rate of photosynthesis. In other words, what types of conditions placed on a plant would speed up or slow down photosynthesis?
Answer:
Sunlight, temperature and geography.
Explanation:
1. The plant requires a certain amount of sunlight to create ATP (Energy)\
2. If the weather is too hot or too cold the plant will not be able to maintain a stable life and slowly wither.
3. Plants need a certain environment to maintain life. such as soil and H2O.
Predict: Based on your hypothesis, predict how changing the rabbit population will affect the other organisms at first. Write “Increase” or “Decrease” next to each “Prediction” in the table.
Answer: Increase the rabbit population
Explanation: Because then the rabbits can support the hungry wolves,bears,hawks,Ext. by feeding them.
What is formed when two substances are in the same container, but no
chemical reaction occurs?
A. An atom
B. A mixture
C. A compound
O D. A molecule
Answer:
A mixture
Explanation:
The elements of a mixture combine physically, yet there is no chemical reaction
Please, I would be grateful for some help!!!
BRAINLIST IF ANSWER! 15 POINTS!!!!
Thank you!
:)
What is the question?
Clarence made a diagram to compare codominance and incomplete dominance. Which label belongs in the area marked Y? Neither allele is dominant. An intermediate phenotype is expressed in offspring. One allele is dominant over the other. Both dominant alleles are fully expressed in offspring.
Answer:
both dominant alleles are fully expressed in offspring.
Explanation:
I hope this helped
Answer:
both dominant alleles are fully expressed in offspring.
Explanation:
A codon can be found on which?
mRNA
ORNA
ORNA
Answer:
a codon can be found on mRNA
Explanation: codons are created when groups of nucleotides are conected to form a animo acid. the formation is all in the mRNA then the animo acids combine to form proteins. proteins are formed when animo acids are "dehydrated" and form a water molecule then the rest combine into a protein and that protein can be in any form for various tasks.
Will give brainlest and heart if correct
Answer:
D. Mitotic phase pls mark me brainliest thanks. Hope this helps. :)
Explanation:
That would be D, Mitotic phase.
Please mark the other person brainliest, they got to this question before I did. Have a great day (⌒‿⌒)
What biome is home to large herbivores who travel in herds in order to evade predators. Some
animals, like the zebra, use their herd and stripes to confuse predators.?
A. Tundra
B. Estuary
C. Savannah
D. Desert
Savannah is home to large herbivores who travel in herds in order to evade predators.
What is Savannah known for?
Savannah is known for its rich history, stunning architecture, and vibrant culture. It is the oldest city in the U.S. state of Georgia and was originally founded in 1733 as a British colony. Savannah is home to numerous historical sites and monuments, such as the Cathedral of St. John the Baptist, the Owens-Thomas House, the Savannah Historic District, and the Telfair Academy of Arts and Sciences. It is also known for its lush parks, such as Forsyth Park, which is home to the iconic Forsyth Fountain. The city is also known for its vibrant arts and culture scene, featuring many galleries, theaters, and performing arts venues. Additionally, Savannah is known for its diverse cuisine, with an array of restaurants serving up classic Southern dishes, fresh seafood, and international fare.
The savannah biome is home to large herbivores such as zebras, giraffes, antelopes, wildebeests, and buffalo, who travel in herds to evade predators. The stripes of the zebra also help to confuse predators.
Therefore, option C Savannah is the correct answer.
To learn more about Savannah the link
https://brainly.com/question/972369
#SPJ1
The biome that fits this description is the Savannah. It is characterized by grassy plains with scattered trees and is home to large herbivores like zebras, who use their herd and stripes as a defense mechanism against predators.
So, the correct answer is C (Savannah).
What are herbivores?
Herbivores are animals that primarily feed on plants, such as leaves, stems, roots, fruits, and seeds. They have specialized digestive systems that are adapted to break down the complex cellulose found in plant cell walls into usable nutrients, such as carbohydrates and proteins. Examples of herbivores include cows, horses, rabbits, deer, and many species of insects, such as butterflies and grasshoppers.
The biome that is home to large herbivores who travel in herds to evade predators and where some animals, like zebras, use their herd and stripes to confuse predators is the Savannah. This biome is characterized by grassy plains with scattered trees and is found in tropical regions. The savannah is home to many large herbivorous mammals such as elephants, giraffes, and antelopes, who form herds for protection against predators like lions, cheetahs, and hyenas. The stripes on zebras' coats help to confuse predators by making it difficult for them to pick out a single target from the herd.
To learn more about herbivores click here
https://brainly.com/question/25715450
#SPJ1
The process of antibody-dependent cellular cytotoxicity (ADCC) allows ______ cells to bind to antibody-coated host cells that may have viral proteins in their plasma membrane in order to kill them, inducing apoptosis and limiting viral spread.
Answer:
The right response is "Natural killer".
Explanation:
Natural killer cells constitute immune cells which could also identify and ultimately destroy distressed or damaged cells. This might also target cancerous as well as tumors. That alone reduces inflammation that lyses this same cell cycle rather than being amongst the very first cells towards prepare an inflammatory system, and even more so towards virus cells, participating including its destruction.Which of the following would NOT stimulate/force you to
breathe?
A.increased plasma acidity
B. reduced plasma oxygen (O2)
C.increased plasma carbon dioxide (CO2)
D.increased plasma oxygen (O2)
Answer:
(C). Increased plasma carbon dioxide (Co2).
Explanation:
Edge
Rhonda Runsalot is a 20 year old woman. She is running at VO2max. Her heart rate is 200 b/min. Her stroke volume is 100 ml blood/b. Her arterial oxygen content is 20 ml O2/100 ml blood. Her venous oxygen content is 6 ml O2/100 ml blood. What is her cardiac output?
Answer:
Cardiac output = 20 L/min
Explanation:
The cardiac output of a person refers to the volume of blood the heart pumps in a minute. The normal range for cardiac output is about 4 to 8 L/min. However, this can vary depending on the metabolic needs of the individual at any instant of time, for example, it is higher when exercising than when resting.
Cardiac output is calculated from the product of the stroke volume in liters/min and the heart rate in beats/min
Cardiac output = stroke volume * heart rate
For the individual who is running; stroke volume = 100 mL/beat or 0.1 L/beat
heart rate = 200 beats/min
Cardiac output =0.1 L/beat * 200 beats/min
Cardiac output = 20 L/min
Lack of growth, degradation of development is referred to as...
Answer:
abnormal development or growth especially of cells.
Explanation:
Lack of growth, degradation of development is referred to as...
What is the purpose of the chloroplast in autotrophs
Answer:
Chloroplast is the fundamentle organelle for photosynthesis as it contains chlorophyll that absorb light and provide energy for the manufacturing of food by the process of photosynthesis.
Explanation:
Students conducted an investigation about processes of the water cycle. They used four bowls containing water and salt to represent the ocean and
collected data in the table below. Based on this data, where did most evaporation occur
Location
Amount of Water (in mL)
10:00 AM 12:00 PM
8:00 A.M.
2:00 PM
Sunny window
50
45
41
36
50
45
43
39
Outside in
shade
Outside in
direct sunlight
In a closet with
no light
50
41
33
27
50
48
46
45 no
Answer:
outside in direct sunlight because the heat from the sun made the water evaporate
what is a reservoir for carbon and nitrogen but not phosphorus?
Answer:
The atmosphere
Explanation:
Answer:
The atmosphere is a reservoir for carbon and nitrogen and cannot be a reservoir for phosphorous.
Explanation:This is because the phosphorous cycle does not include gaseous phase.
Hurry! Will mark brianlest if correct, worth 11 points! Which best explains the zygote?
It has a diploid number of chromosomes
It has a haploid number of chromosomes.
It has all the chromosomes of the mother.
It has all the chromosomes of the father.
Answer:
The correct answer is A. It has a diploid number of chromosomes.
Answer:
A
Explanation:
What do all living things have? Check all that apply.entify Characteristics Sharedngs
feelings
metabolism
genes
a nutritional diet
organisms
a limited life span
cells
Answer:organismen
Explanation:
dieren,mensen, iets die leeft
Answer:
Metabolism, genes, a limited life span, cells.
Explanation:
Monstel
which best describes the trophic level of an organism
Looking at the Punnett square, list the possible phenotypes and frequencies of
Martha and John's children? *
A
a
a
Аа
аа
а
Аа
аа
Your answer
Answer:
Phenotypes:
Aa with a frequency of 2
aa with a frequency of 2
The children have equal chances of having aa or Aa
stage of photosynthesis that uses energy from the sun
A. Autotroph
B.potential energy
C. Stroma
D. Calvin cycle
E. Heterotroph
F. Light reactions
G. Chemical energy
H. Chlorophyll
The light reactions convert light into energy (ATP and NADHP) and the dark reactions
F. Light reactions
Answer:
C. Stroma
H. Chlorophyll
Explanation:
I think if not then it's F as well
Which statement best describes the relationship between prophase and telophase?
The spindle fibers bring the chromosomes together in prophase then apart in telophase.
The spindle fibers pull the chromosomes apart in prophase then bring them together in telophase.
The nuclear membrane forms in prophase and breaks down in telophase.
The nuclear membrane forms in telophase and breaks down in prophase.
There are other ppl who have asked this question but the answers seem wrong because in my notes it says that the fourth one is correct
Which is the most sustainable ?
By the time a cell has reached metaphase, all the following have occurred except...
Answer:
C. Sister chromatids separate
Explanation:
During interphase, which is composed of the G1 phase, S phase and G2 phase, the cell grows and replicates its DNA and some of its organelles. During the S phase, the genetic material is duplicated into two sister chromatids, and centrosomes, which are nucleated microtubules that interact with the chromosomes to form the mitotic spindle, are also replicated. Metaphase is the third phase of mitosis, where sister chromatids align in the middle of the cell before their separation into two daughter cells.
Which statement describes an interaction between the biosphere and the atmosphere that is related to
photosynthesis?
During photosynthesis, plant roots take in water from soil.
During photosynthesis, plants take in carbon dioxide from the air.
Through photosynthesis, energy stored in plants is released into the air.
Through photosynthesis, energy stored in plants is transferred to humans who eat them.
Answer:
B.
Explanation:
During photosynthesis, plants take in carbon dioxide from the air.
Describe the growth in each phase
v bnm,bnm,Answer:
Explanation:vbnmngfghj