Which balances the equation Mg + O2 → MgO?
Mg + 2O2 → 4MgO
2Mg + 2O2 → 2MgO
2Mg + O2 → 2MgO
2Mg + 2O2 → 4MgO
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
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What is the study of the interaction between organisms and their environment?
Answer: ecology
Explanation:
Do you think the adaptation of the animal you chose are a result of its environment, genes, or both? Explain
Answer:
The adaptations are result of both the environment and genes. Animal develop adaptive characteristics in response to their environmental challenges. These adaptations help the animals survive in their environment. The animals are more likely to reach reproductive age. So,these adaptive traits are more likely to be passed on to offspring.In the case of cheetahs,tan coloring,conservation of water, and fast legs are traits that help them survive in the savanna. These traits,like all the other characteristics of cheetahs,are genetically passed from parents to offspring.
REWRITE THIS
Which most clearly shows evolutionary relationships between species?
Answer:
DNA, similar bone constructs, and simlar looks
Explanation:
Answer: Scientists collect information that allows them to make evolutionary connections between organisms. Similar to detective work, scientists must use evidence to uncover the facts. In the case of phylogeny, evolutionary investigations focus on two types of evidence: morphologic (form and function) and genetic.
Two Measures of Similarity
Organisms that share similar physical features and genetic sequences tend to be more closely related than those that do not. Features that overlap both morphologically and genetically are referred to as homologous structures; the similarities stem from common evolutionary paths. For example, as shown in Figure 12.2.1, the bones in the wings of bats and birds, the arms of humans, and the foreleg of a horse are homologous structures. Notice the structure is not simply a single bone, but rather a grouping of several bones arranged in a similar way in each organism even though the elements of the structure may have changed shape and size.
Explanation: I don’t know what it is but I seach web that can always use google.
The human population on Earth is currently growing
O A. exponentially
B. slowly
O C. linearly
Answer: Exponentially
Explanation:
The human population on Earth is currently growing exponentially. Therefore option A is correct.
Exponential growth refers to a pattern where the population increases at an ever-accelerating rate, proportionate to its current size.
This growth is driven by factors like technological advancements, improved healthcare, and higher birth rates.
Over the past few centuries, the human population has experienced significant exponential growth due to advancements in agriculture, medicine, and industrialization, which have allowed for better living conditions and longer life expectancy.
While the rate of growth may fluctuate over time, the overall trend remains exponential.
However, it's essential to consider sustainability and the impact of such growth on resources, the environment, and societal challenges in the future.
Therefore option A exponentially is correct.
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Water molecules diffuse through the cell membrane through aquaporins. How are these proteins helpful in osmosis?
Answer:
Aquaporins acts as water channels that conduct water to and fro cell membrane during osmosis
Explanation:
Osmosis is a type of cellular transport in which water moves from a region of low solute concentration to a region of high solute concentration through a semipermeable membrane. The osmotic process occurs with the aid of selective protein channels called AQUAPORINS. They allow only the passage of water and prevent that of ions and solutes.
Aquaporins help in the osmotic process by creating a channel for the passage of water molecules across the membrane. In other words, aquaporins facilitate the speedy movement of water molecules across membranes via osmosis, which is normally slow due to the POLARITY OF WATER MOLECULES.
Aquaporins increase the rate of osmosis which is generally slow due to the polarity of water molecule.
Osmosis is a type of cellular transport in which water moves from a region its high concentration to its low concentration through a semipermeable membrane.
Aquaporins are protein channels that allow transport of only water molecules through cell membrane during osmosis.
Aquaporins increase the rate of osmosis which is generally slow due to the polarity of water molecule.
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in front of you is sugar and a top loading balance, your instrutor ask you to measure out 2 grams of sugar into a 50 mL beaker. Describe the process of measuring out the sugar from start to finish
Each of the major hypotheses proposed to explain why sexual reproduction is more widespread than asexual reproduction ultimately bases its explanation on the adaptive benefit of:________.
a. forming large populations.
b. forming genetically distinct offspring.
c. reducing mutation rates.
d. forming relatively slow-growing populations.
e. forming gametes of different sizes.
Answer:
The correct answer is option b, that is, producing genetically distinct offspring.
Explanation:
It is found that sexual reproduction is more widespread in comparison to asexual reproduction primarily due to its adaptive benefit of producing offspring, which are genetically distinct. At the time of sexual reproduction, the genetic material of two individuals amalgamates to give rise to genetically-different offspring, which vary from their parents.
This tendency of reproducing sexually by the majority of eukaryotes is proof of its evolutionary success. The genetic diversity resulting due to sexual reproduction is considered to provide better chances of surviving in a modifying or unpredictable environment.
The laws of superposition and original horizontality are best applied to?
sedimentary rocks
metamorphic rocks
all rock types
igneous rocks
Answer:
Your answer is sedimentary rocks
Explanation:
Hope this helped :)
How far is the sun?
ölmfnf
Answer:
147.5 million km
Explanation:
The Sun is at an average distance of about 93,000,000 miles (150 million kilometers) away from Earth. It is so far away that light from the Sun, traveling at a speed of 186,000 miles (300,000 kilometers) per second, takes about 8 minutes to reach us.
What is ATP, how is it made, and what is its primary function in cells?
Answer:
ATP:Is the principal molecule for storing and transferring energy in cells. It is often referred to as the energy currency of the cell and can be compared to storing money in a bank.
How is it made:Most of the ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP. ATP synthase is located in the membrane of cellular structures called mitochondria; in plant cells, the enzyme also is found in chloroplasts.
primary function in cells:Adenosine triphosphate, or ATP, is the primary carrier of energy in cells. The water-mediated reaction known as hydrolysis releases energy from the chemical bonds in ATP to fuel cellular processes.
Question:
The structure of adenosine triphosphate (ATP) is shown here.
Explain how energy stored in the chemical bonds of ATP can be released.
Answer:
The energy put away in ATP at one area is delivered from ATP when the terminal phosphate bond is broken. In this cycle a phosphate bunch is withdrawn to yield inorganic phosphate and ADP and results in the freedom of 7.3 kcal/mol
Explanation:
Which Two process is it Giving brainliest i need help bad
Answer:
Boiling and Freeezing
Explanation:
Losing thermal energy means losing heat.
What would happen if a fast moving continental polar air mass meets a tropical maritime air mass over Tennessee in Spring?
A a cold front would form and storms would occur
B a warm front would form and storms would occur
C a cold front would form and light rain would occur
D a front may or may not occur, there is not enough information to decide
( i need help bad )
EXPLAIN THE WATER CYCLE IN YOUR OWN WORDS
Answer:The water cycle is often taught as a simple circular cycle of evaporation, condensation, and precipitation. Although this can be a useful model, the reality is much more complicated. The paths and influences of water through Earth’s ecosystems are extremely complex and not completely understood.
I hope this helps and have a brainly good day :D
What types of mature body cells come from the following tissue layers in early embryos:
endoderm -
mesoderm-
ectoderm -
Answer: The body tissues and organs develop from the three primary germ layers that form during the growth process of the human embryo.
...
These body tissues include:
Muscles.
Fibrous tissue.
Bone and cartilage.
Fat or adipose tissue.
Blood and lymph vessels.
Blood cells.
Explanation:
which two types of wheater is it i really need this
Answer:
C and A
Explanation:
it will always sprinkle rain or become a sunny day
Answer:
Sunshine & Light Rain
Explanation:
what is the goal of a statement of purpose?
Answer:
to persuade some one or set a record straight on some of millions of topics you may compose an argument over.
Explanation:
practice makes perfect but nobody is perfect.
The outer part of DNA is comprised of
nucleotides.
oxyribose and phosphene backbone.
deoxyribose and phosphate backbone.
RNA.
Answer:
deoxyribose and phosphate backbone
Explanation:
The outer part of the DNA double helix contains an alternating sugar (deoxyribose) and phosphate backbone.
The outer part of the DNA double helix contains deoxyribose and phosphate backbone. So, the correct option is (C).
What is DNA?DNA stands for Deoxyribonucleic Acid. It is defined as a polymer that is made up of two polynucleotide chains that are coiled around each other to form a double helix. Polymers contain the genetic instructions for the growth, function, development, and reproduction of all known organisms and many viruses. DNA and ribonucleic acid (RNA) are nucleic acids.
It contains the biological instructions which make each species unique. DNA with the instructions it contains that is passed from adult organisms to their offspring during reproduction.
One important function of DNA is that it is responsible for a process called protein synthesis, which is the process in which cells make proteins.
Thus, the outer part of the DNA double helix contains deoxyribose and phosphate backbone. So, the correct option is (C).
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Oxygen consumption can be used as a measure of metabolic rate because oxygen is
A necessary for ATP synthesis by oxidative phosphorylation
B necessary to replenish glycogen levels
C necessary for fermentation to take place
D required by all living organisms
E required to break down the ethanol that is produced in muscles
Answer:
the answer is B necessary to replenish glycogen levels
The measurement of metabolic rate can be done by Oxygen consumption because B:necessary to replenish glycogen levels.
The rate of metabolism can be regarded as the amount of energy that us been utilized in certain period, it can be with the rate of ATP production which is been measured through oxygen consumption.Measurements by alcoholic fermentation can be done by the production of CO2.
Therefore, option B is correct.
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the process in which a molecule of DNA is copied into a corresponding strand of mRNA is called a
Write down the whole question
Which macromolecule forms a double layer as the primary structure of cell membranes? fats oils phospholipids steroids
Answer:
phospholipids os the awnser
I can't figure out this question please help. Science question (attached below)
Answer:That is an hurricane
Explanation:The reason why I said a hurricane because if you look at it the is an eye in the middle plus that's what a hurricane looks like.
Procedure:
The procedures are listed in your virtual lab. You do not need to repeat them here. Please be sure to identify the test variable (independent variable), outcome variable (dependent variable).
Reminder: Test variable = the item you are changing or manipulating; Outcome variable = the item you are measuring
Test variable (independent variable):
Outcome variable (dependent variable):
Data:
Record the data from each location below.
Location Name
Boundary Type
(C=Convergent, D=Divergent, or T=Transform)
Year Observed
(5, 10, or 20 million years)
Geologic Events Observed
(earthquakes, faults, ocean formation, mountains, volcanoes, island chains, seafloor spreading)
Location One
Himalayas
5
Event 1-
20
Event 2-
Location Two
East Africa
5
Event 1-
10
Event 2-
20
Event 3-
Location Three
San Andreas fault zone
5
Event 1-
10
Event 2-
20
Event 3-
Location Four
Aleutian Islands
5
Event 1-
20
Event 2-
Location Five
Mid-Atlantic Ridge
5
Event 1-
10
Event 2-
20
Event 3-
Location Six
Alpine Fault
5
Event 1-
20
Event 2-
Conclusion:
Your conclusion will include a summary of the lab results and an interpretation of the results. Please write in complete sentences.
What types of geological events or changes occur at divergent plate boundaries?
What types of geological events or changes occur at convergent plate boundaries?
What types of geological events or changes occur at transform plate boundaries?
Explain how these geological processes and interactions have changed Earth's surface through the years. Be sure to use evidence to support your answer.
:)
Explanation:
Some types of geological events and changes that occurred at divergent plate boundaries are seafloor spreading, volcanoes, earthquakes, and ocean formation. ... Some types of geological events and changes that occurred at transform plate boundaries are island chains, earthquakes, faults, and volcanoes.
Answer:
Location Name
Boundary Type
(C=Convergent, D=Divergent, or T=Transform) Year Observed
(5, 10, or 20 million years) Geologic Events Observed
(earthquakes, faults, ocean formation, mountains, volcanoes, island chains, seafloor spreading)
Location One
Himalayas Convergent boundary 5 earthquakes
10 mountain range
Location Two
East Africa Divergent Boundary 5 Island chains
10 earthquake
20 ocean formation
Location Three
San Andreas fault zone Transform Boundary 5 Earthquakes
10 faults
20 mountain range
Location Four
Aleutian Islands Convergent Boundary 5 volcano
20 island chains
Location Five
Mid-Atlantic Ridge Divergent Boundary 5 earthquakes
10 volcano
20 Sea floor
Location Six
Alpine Fault Transform Boundary 5 volcano
20 sea floor
Explanation:
Hope this helps :)
What property of water allows water to move through materials with pores and cling to the fibers of materials
Answer:
Capillary action
Capillary action is the combined force of attraction among water molecules and with the molecules of surrounding materials causing a liquid to climb upward against the force of gravity. It allows water to move through materials with pores inside.
Explanation:
Hope I helped you!!
Which best describes the law of independent assortment?
A. The F2 generation will be identical to the F1 generation.
B. Traits can only be controlled by a single gene.
C. Alleles of a trait separate independently when gametes form.
D. The traits of an offspring are independent from the parents.
S
Answer:
Alleles of a trait separate independently when gametes form.
Explanation:
just answered it
The statement best describes the law of independent assortment is Alleles of a trait separate independently when gametes form.
What is the law of independent assortment?The law of independent assortment says that there are different alleles present for different genes. The allele received by one gene does not affect the allele received by another gene.
Thus, the correct option is C.
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Nitrogen is a very important element in biology. What are some of the reasons that organisnm needs nitrogen?
Answer:
Nitrogen is a crucially important component for all life. It is an important part of many cells and processes such as amino acids, proteins and even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food.
a random number of chromosomes from each parent . True or False
Answer:
False
Explanation:
you get 23 chromosomes from mom and 23 from dad and that is why gametes only have 23 chromosomes
helpp mee
10. An enclosed 20 mL metal cylinder was filled with a gas sample at room temperature. The
sample then was transferred to an empty 40 mL enclosed container, also at room temperature.
After being transferred, the volume of the gas was
A. 10 mL.
B. 20 mL.
C. 30 mL.
D. 40 mL.
After being transferred, the volume of the gas was 40 ml. So, the correct option is (D).
What is Volume?Volume is defined as a measure of three-dimensional space that is often numerically quantified by SI derived units or various imperial or US customary units. The definition of length is correlated with that of quantity.
Volume is described as the space occupied within the boundaries of an object in three-dimensional space which is also known as the capacity of the object.
In the above given information, the 20ml metal cylinder when transfer to 40 ml container, the volume will be 40 ml as gas takes the volume of container. So, when kept in a closed container, the volume and shape changes according to the size of the container
Thus, after being transferred, the volume of the gas was 40 ml. So, the correct option is (D).
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