Fluorine has an atomic number of 9. Which of the following is true of fluorine?
A.
It will lose an electron to become a cation.
B.
It will gain an electron to become an anion.
C.
It will form two covalent bonds to fill its outer shell.
D.
It will form three covalent bonds to fill its outer shell.
Answers
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Fluorine is an atom with atomic number 9 which will gain an electron to become an anion. Thus, the correct option is B.
What is Fluorine atom?Fluorine is a chemical element which is represented by the symbol F and has atomic number 9 and mass number 18. It is the lightest halogen of the family and it exists at standard conditions as a highly toxic, pale yellow diatomic gas in nature. Being the most electronegative reactive element of the periodic table, it is extremely reactive, as it reacts with all the other elements except the light inert gases.
A fluorine atom consists of nine protons and nine electrons, so it is electrically neutral as the charges cancel out each other. If a fluorine atom gains an electron, it becomes fluoride ion with an electric charge of -1.
Therefore, the correct option is B.
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Related Questions
Golf drives travel much farther than Major League home runs. Why might this be?
Answers
Answer:
Explanation:
With much lower gravity and much less air resistance, the golf ball will stay airborne longer and travel farther.
Answer:
good question!
Explanation:
What is the process where the mitochondria converts chemical energy into food stored into compounds?
Is it cellular respiration or oxidative phosphorylation?
Answers
Answer:
oxidative phosphorylation
Explanation:
Why is water easily polluted
Answers
Answer:water is able to dissolve more substances than any other liquid on earth
Explanation:
When large tracts of land are plowed, the exposed soil can erode during rainstorms
we have Kool-Aid and brilliant blue waterfalls. It's also why water is so easily polluted
Answer:
Water is easily polluted because its is able to dissolve more substances than any other liquid on earth.
Why is natural erosion a beneficial process?
It helps create fertile soil.
b. It leads to reduced vegetation.
It happens rapidly.
d. It prevents damage from natural disasters.
Answers
Answer:
A
Explanation:
What is the genotyping and phenotypic ratio of this dyhybrid cross
Answers
We need to know the genotypes of the parents and how the alleles segregate during meiosis in order to calculate the genotypic and phenotypic ratios of a dihybrid cross.
What is a dihybrid cross's phenotypic ratio?The traditional Mendelian ratio for a dihybrid cross in which the alleles of two distinct genes assort independently into gametes is 9:3:3:1, and it can be used to predict the phenotypic ratio.
What do genotypic and phenotypic ratios mean?A phenotypic ratio compares an organism's potential outcomes depending on its outward appearance. An illustration. If you finish a Punnett Square, your results can be 3 purple: 1 white. Your phenotypic ratio for flower colour is as follows. The genotypic ratio compares the frequency of genetic information.
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Think of a place on Earth where you would like to live or visit some day. Write down a description of the climate there and the various factors you think might influence that climate. Think about the reasons why you chose those particular factors as important contributors to the climate.
Answers
The presence of methane or carbon dioxide in the air is associated with climate because they function as greenhouse gases that trap heat from solar radiation into the atmosphere.
What are greenhouse gases?Greenhouse gases such as carbon dioxide or methane are able to alter the global climate because they do not allow the dispersion of heat from solar radiation into space, thereby increasing global temperatures.
Therefore, we can conclude that greenhouse gases (e.g., carbon dioxide or methane) may alter the global temperature and therefore the concentration levels of these substances in the atmosphere are indicative of climate conditions.
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Which of the following is not a method of heat transfer? Conduction Insulation Radiation Convection
Answers
Answer:
insulation is the correct answer
The method that is not one of the heat transfer method is insulation.
Heat transfer can be regarded a term in thermal engineering use to describe the generation as well as the use and conversion, exchange of thermal energy that exist between physical systems. Heat transfer can be done with different mechanismsThese are: conductionconvectionRadiationConvection can be regarded as the flow of heat in fluids, these fluids could be warmed gas, water.Conduction can be regarded as the movement of heat through objects that are in physical contact, like two metalsRadiation can be regarded as the energy which appears from a source then travels through space, this do contain wave-like properties. Insulation can be regarded as setting up a barrier between two objects, usually between hot and the cold object , so that heat reduction can be achieved.Therefore, Insulation is not heat transfer mechanism, it i a way to reduce heat loss.
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A testable hypothesis could be formed front which questions
Answers
A testable hypothesis is one that can be tested through empirical research, meaning that it is possible to gather evidence to support or refute it.
A hypothesis is a possible explanation that is proposed for a phenomenon that occurs in nature. In the scientific method, hypotheses are tested by collecting and analyzing data to either support or reject them.
A testable hypothesis could be formed from a question by using the following steps:
Identify the phenomenon that you want to study: Start by identifying the phenomenon that you want to study. This could be a relationship between two variables or a question about how something works. Develop a research question: Based on the phenomenon you want to study, develop a research question that can be answered through empirical research. This question should be specific and should be able to be tested using scientific methods. Formulate a hypothesis: Using your research question, formulate a hypothesis that can be tested through empirical research. This hypothesis should be a statement that proposes a possible explanation for the phenomenon you are studying. It should be clear, concise, and testable.
Test the hypothesis: Once you have developed a testable hypothesis, you can design and conduct experiments to gather data that will either support or refute the hypothesis. If the hypothesis is supported by the data, you can consider it to be a valid explanation for the phenomenon you are studying. If the data refute the hypothesis, you may need to revise it or develop a new hypothesis.
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whats 20x20? thank you
Answers
Answer:
400 yayyyyyy
Explanation:
yvhjghkkkkhhh
Answer:400
Explanation:
20
x20
_____
00
+400
--------
400
Which statement best describes human olfactory coding - by identity coding, 5 receptor types encode 5 distinct odors - by identity coding 339 receptor types encode 339 distinct odors - by combinatorial coding 339 receptor types can encode 10.000 distinct odors - by identity coding, 10 000 receptor types encode 10.000 distinct odors
Answers
The statement that best describes human olfactory coding is: by combinatorial coding, 339 receptor types can encode 10,000 distinct odors. This means that our olfactory system uses a combination of different receptor types to distinguish between a wide variety of odors.
Human olfactory coding is based on a combinatorial system in which the brain distinguishes between different odors based on the unique combination of receptor types that are activated. It has been estimated that humans have around 339 different types of olfactory receptors, which can combine in various ways to create a large number of unique odor representations.
The estimated number of distinct odors that can be detected by the human olfactory system is approximately 10,000, which is a relatively small number compared to the range of possible smells in the environment. Nevertheless, the ability of our olfactory system to detect and distinguish between a wide variety of odors is still a remarkable feat of sensory processing.
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Explain why the Indian River Lagoon is, as suggested in the title,
"an
estuary of national significance." Include text evidence in your answer.
Answers
Answer:
Boating along the Indian River Lagoon allows you to explore an estuary of national significance. This means that the estuary, the most biologically diverse estuary in North America, has a significant impact on the area. If you want to explore this important body of water along Florida's east coast, join 321 Boat Club
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Mg(ClO3)2-> MgCl2+ 3O2
How many grams of magnesium chlorate would you need to produce 5.00 liters of oxygen?
Answers
Therefore, 5L of O2 at STP is equivalent to (1 mole/22.4 L) x 5 L = 0.2083 mol of O2
From the balanced equation, 3 moles of O2 are produced by heating 1 mole of Mg(ClO3)2
Therefore, 0.2083 mol of O2 is produced by (1/3) x 0.2083 = 0.0694 mol of Mg(ClO3)2.
Molar mass of Mg(ClO3)2 = 191.32 g/mol
Therefore, the mass of Mg(ClO3)2 required is 0.0694 mol x 191.32 g/mol = 13.28 g
A suspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. To follow this process by monitoring the release of CO214, at which positions in the glucose molecule would the C14 label need to be incorporated
Answers
Answer:
carbons 3 and 4
Explanation:
Alcoholic fermentation is an anaerobic (non-oxygen-requiring) pathway capable of converting one mole of glucose (C6H12O6) into two moles of ethanol (C2H5OH) and two moles of carbon dioxide (CO2), producing during this process two moles of ATP. The overall chemical reaction is as follow: C6H12O6 (glucose) >> 2 C2H5OH (ethanol) + 2 CO2. During this process (fermentation), energy is obtained from the glycolysis process by which each glucose molecule is broken down into two pyruvate molecules (2 CH3COCOO−). Pyruvic acid is an organic acid that ionizes to produce a hydrogen ion and a molecule of pyruvate. Subsequently, this pyruvate is then converted into ethanol and CO2, generating NAD+, i.e., the oxidized form of nicotinamide adenine dinucleotide or NAD, which is required for glycolysis (and therefore to produce ATP). Moreover, dismutation refers to the redox reaction by which one compound with an intermediate oxidation state converts into two compounds. In consequence, the CO2 generated during fermentation arises from the dismutation of pyruvic acid. During this process, the major source of CO2 is carbon 3 (C3) and carbon 4 (C4) of the glucose as a result of the dismutation of pyruvate, and thereby these positions in the glucose molecule would the C14 label need to be incorporated.
If inhibitor X changes sucrase activity to a Vo of 0.25 mM per minute when [S] = 5.0 mM, and a Vo of 0.333333333333 mM per minute when [S] = 2.0 mM, calculate the new Vmax. A. 0.50 mM per minute
B. 1.0 mM per minute
C. 2.5 mM per minute
D. 5.0 mM per minute
E. 10.0 mM per minute
Answers
The new Velocity_max is 0.5 mM per minute, which corresponds to option A.
To calculate the new Vmax, we can use the Michaelis-Menten equation, which relates the reaction rate (Vo) to the substrate concentration ([S]) and the maximum reaction rate (Vmax). The equation is given as:
Vo = (Vmax × [S]) / (Km + [S])
We have two sets of data points:
[S] = 5.0 mM, Vo = 0.25 mM/min
[S] = 2.0 mM, Vo = 0.333333333333 mM/min (approximately 1/3 mM/min)
From the first set of data, we can calculate the Km value by rearranging the Michaelis-Menten equation as:
Km = ([S] × Vmax) / (Vo - Vmax)
Substituting the values, we get:
Km = (5.0 mM × Vmax) / (0.25 mM/min - Vmax)
Similarly, from the second set of data, we get:
Km = (2.0 mM × Vmax) / (0.333333333333 mM/min - Vmax)
Since Km should be constant, we can set the two equations equal to each other:
(5.0 mM × Vmax) / (0.25 mM/min - Vmax) = (2.0 mM × Vmax) / (0.333333333333 mM/min - Vmax)
By solving this equation, we find Vmax = 0.5 mM/min.
Therefore, the new Vmax is 0.5 mM per minute, which corresponds to option A.
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Forested floodplain wetlands benefit from periodic flooding from rivers. When floodwaters spill into the wetland, they bring water and nutrients and leave both behind. But humans have often cut off floodplains from rivers by building roads, levees, berms, etc. Think about what would happen if a river could no longer flood into these areas. How would the resulting increased amount of water and nutrients in the river affect soils, hydrology, and life downstream?
Answers
The absence of flooding from rivers into forested floodplain wetlands would lead to adverse effects on soils, hydrology, and the overall biodiversity downstream, emphasizing the importance of maintaining the natural connection between rivers and floodplains for the health and functioning of these ecosystems.
If a river can no longer flood into forested floodplain wetlands due to human interventions, it would have significant consequences for the downstream areas in terms of soils, hydrology, and life.Without periodic flooding, the increased amount of water and nutrients in the river would not be able to disperse and be deposited in the floodplain wetlands. As a result, downstream soils would experience a decrease in nutrient inputs, leading to decreased fertility and altered composition. The absence of regular flooding would disrupt the natural hydrological cycle, reducing the recharge of groundwater and altering the flow patterns in the river system. This could result in decreased water availability, increased erosion, and changes in the overall ecosystem dynamics downstream.The disruption of nutrient flows and hydrological patterns would also have a significant impact on the life forms downstream. Aquatic plants, fish, and other organisms that depend on floodplain wetlands for breeding, feeding, and shelter would face habitat loss and reduced food availability. This, in turn, could disrupt the food chain and impact the abundance and diversity of aquatic and terrestrial species in the downstream areas.The absence of flooding from rivers into forested floodplain wetlands would lead to adverse effects on soils, hydrology, and the overall biodiversity downstream, emphasizing the importance of maintaining the natural connection between rivers and floodplains for the health and functioning of these ecosystems.For more such questions on flooding
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Joaquim and Patrick want to save money on their energy bills. Which one of the following would NOT result in a reduction in energy costs?
Please choose the correct answer from the following choices, and then select the submit answer button.
Answer choices
switching all their compact fluorescent bulbs to incandescent bulbs
buying an Energy Star-rated clothes dryer
installing a tankless water heater
add insulation in the roof space
Answers
Switching all their compact fluorescent bulbs to incandescent bulbs would NOT result in a reduction in energy costs. Option a is correct.
Switching all compact fluorescent bulbs to incandescent bulbs would not result in a reduction in energy costs because incandescent bulbs are not energy-efficient. Compact fluorescent bulbs use 75% less energy than incandescent bulbs and last up to ten times longer, making them a much more cost-effective option. Buying an Energy Star-rated clothes dryer can also help save energy and reduce costs.
Energy Star appliances are designed to use less energy than standard appliances, which translates to lower energy bills over time. Installing a tankless water heater can also help reduce energy costs by only heating water when it is needed. Finally, adding insulation in the roof space can help keep a home warmer in the winter and cooler in the summer, reducing the need for heating and air conditioning, and thus reducing energy costs. Option a is correct.
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interpreting graphics the biodiversity hot spots shown in figure 9 share several characteristics besides a great number of species. look at the map, and name many as many shared characteristics as you can.
Answers
How does the current affect plankton and nekton life?
Answers
Answer:
Advection by ocean currents modifies phytoplankton size structure at small scales (1–10 cm) by aggregating cells in different regions of the flow depending on their size. This effect is caused by the inertia of the cells relative to the displaced fluid
Relative Humidity (%)
Heat Index
Temperature (°F)
80 82 84 86 88 90 92 94 96 98 100 102 104 106 118 110
40 80 81 83 85 88 91 94 97 101 105 109 114 119 124 130 136
45 80 82 84 87 89 93 96 100 104 109 114 119 124 130 137
50 81 83 85
88 91 95 99 103 108 113 118 124 131 137
55 81 84 86 89 93
97 101 106 112 117 124 130 137
60182 B
60 82 84 88 91
95 100 105 110 116 123 129 137
65 82 85 89
93
98 103 108 114 121 128 136
70 83 86 90 95 100 105 112 119 126 134
70 83 86 on
75 84 88 92
97 103 109 116 124 132
80 84 89 94 100 106 113 121 129
85 85 90 96 102 110 117 126 135
90 86 91 98 105 113 122 131
95 | 86 93 100 108 117 127
100 87 95 103 112 121 132
Likelihood of Heat Disorders with Prolonged Exposure or Strenuous Activity
Caution Extreme Caution
Danger
External Danger
1. Look at the figure above. What's the relative humidity percentage when the "real feel" is 108°F and the temperature is 96°F?
O A. 40
O B. 65
O C. 95
D. 50
Answers
Answer:
D 50% is the correct answer
Summarize the findings of other scientists in Germany and Boston that support the work of Calderon-Garciduenas
Answers
Calderón-Garcidueñas has conducted research on the impact of air pollution on the brain and cognitive function. Other scientists in Germany and Boston have also conducted studies that support her work and findings.
In Germany, a group of researchers conducted a study to investigate the effects of air pollution on brain structure and cognitive function in a large population of older adults. The study utilized neuroimaging techniques to assess brain volumes and cognitive tests to evaluate cognitive performance. The findings revealed a significant association between long-term exposure to air pollution and reduced brain volume in regions related to memory and learning. The study also found that higher levels of air pollution were associated with poorer cognitive performance in various domains.
In Boston, researchers focused on the impact of air pollution on children's brain development. They conducted a study involving a cohort of children and assessed their cognitive abilities using standardized tests. The study found that children exposed to higher levels of air pollution exhibited lower cognitive scores, particularly in areas related to attention, memory, and language skills. The researchers also observed structural changes in the brain, specifically in regions involved in cognitive control, in relation to air pollution exposure.
These studies from Germany and Boston provide additional evidence supporting Calderón-Garcidueñas' findings regarding the detrimental effects of air pollution on the brain and cognitive function. They reinforce the notion that long-term exposure to air pollution can lead to structural changes in the brain and have a negative impact on cognitive abilities. The collective findings highlight the importance of addressing air pollution as a public health concern and implementing measures to reduce pollution levels to safeguard brain health and cognitive development, particularly in vulnerable populations such as children and older adults.
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For this assignment, you will first research energy resources in your area. Next, you will gather
information about the political, economic, and environmental effects of the worldwide distribution and use
of the resources you use in your community. Then, you will develop a long-term sustainability plan for
your community. Finally, you will create a multimedia presentation of your sustainability plan.
Background Information
Many states and localities have a number of renewable and nonrenewable resources. Renewable
resources include those that can be replaced faster than they are used: solar power, wind power, timber,
and oxygen are just a few examples. Nonrenewable resources cannot be easily replaced. They are used
at a faster rate than they are created. These include oil, natural gas, coal, minerals, and precious metals.
Many states, municipalities, and businesses have sustainability plans. These are guidelines to avoid
depletion of natural resources to maintain balance in Earth's biological systems. As Earth's population
increases, humans will need to continually work to minimize their impact on the planet's resources. A
sustainability plan outlines specific actions and goals that will aid in this important work.
On a global scale, countries create their own sustainability plans because the global distribution of
resources have political, economic, and environmental effects. Their sustainable plans help them manage
resources and the effects of using these resources. The global distribution of resources also affects
states and communities. Sustainability plans involve details outlining how political, economic, and
environmental issues will be addressed.
Answers
The sustainability plan for my community involves replacing non-renewable energy sources like cola with renewable energy sources like solar and wind energy.
What is a sustainability plan?A sustainability plan outlines strategies for sustaining the program, activities, and partnerships and serves as a road map for accomplishing long-term objectives.
A community sustainability plan serves as a guide for creating a location where people can live, work, and play that is socially just, economically viable, and environmentally sound.
Programs for recycling and composting, renewable energy initiatives, and the use of community green teams to identify and prioritize sustainability requirements are some examples.
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1) Which is not true about polyploidy?
A) It is caused by crossing over
B) It can produce hardy and vigorous plants
C) It never occurs in animals
D) It is lethal in humans
Answers
Answer:
It should be A) It is caused by crossing over
a factory owner might decide to manufacture shirts in parkistan instead of the United States because ?
Answers
Answer:
A factory owner might decide to manufacture shirts in Pakistan instead of the United States because it is less expensive to make shirts there.
Which organism is likely to carry out the process shown in the diagram?
CO, + H,O
Heat
www
Chloroplast
Mitochondrion
MASS
Respiration
OA. Barn owl
OB. Mushroom
C. Alligator
-0₂
Sugar
ATP
Answers
Answer:
C
Explanation:
took the test
What factors would you consider when locating your drinking water well?
Answers
Answer: Proximity to where people live. Convenience is a very important factor to consider when locating a well. Studies have shown that when a water point is located less than 200 meters from a home, people tend to use more water than when the source is farther away.
Explanation:
LESSON SUMMARY: EXIT TICKET
You work for NASA, and have discovered an alien threat.
Apply your knowledge of the advantages and
disadvantages of asexual and sexual reproduction.
NASA has captured an alien and had time to study
the alien's DNA, and how their body works. They
used this information to come up with a special
virus to harm and make only aliens sick. So it
will not affect humans, but it will make aliens
sick, and eventually kill them while not alerting
the population of human beings that aliens are among us. Which type of alien
reproduction would this virus be most effective on (Pick 1 and explain why)
1)Asexually reproducing aliens 2)Sexually reproducing aliens 3) Both
Answers
Asexually reproducing aliens would be more susceptible to the NASA-created virus. Option A is correct.
Which type of alien reproduction would this virus be most effective on?This is due to the fact that asexual reproduction creates genetically identical offspring through the process of mitosis without the transfer of genetic material from one person to another. Because of this lack of genetic diversity, any mutation or genetic change caused by the virus would have an impact on the entire population. On the other hand, through meiosis and fertilisation, sexually reproducing aliens create offspring with distinctive genetic material. Due to the fact that different people would react to the virus differently due to genetic diversity, it would be more challenging for the virus to infect the entire population. As a result, the virus would spread more readily and have a greater effect on the asexually reproducing aliens.
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What process in the hydrological cycle occurs when water vapor in the air changes to liquid water? (A) Condensation (B)Evaporation + (C)Precipitation (D)Vaporization
Answers
Answer:
option A is correct
Explanation:
condensation is the process by which water vapors in the air are converted to liquid water
Answer:
The answer would be condensation. Think of a water bottle and how when you take it out of a fridge, water droplets form on the outside.
Explanation:
We have heard the sun is going to explode! What should we do?
Answers
Answer: Ummm that will not happen
Explanation:
Which study would fall under the atmospheric component of environmental science?
A. The effect of changing temperature on butterflies
B. The effect of the water from factories on drinking water
C. The effect of the type of soil on the growth of plants
D. The effect of surface runoff on the trees in the forest
Answers
Atmospheric sciences can include studies of meteorology, greenhouse gas phenomena, atmospheric dispersion modeling of airborne contaminants, sound propagation phenomena related to noise pollution, and even light pollution.
Explanation:
In simple words, environmental science is the study of living organisms and how they interact with our environment.
Explain the role the ocean plays in the carbon cycle (think about the physical and biological processes that occur in the ocean)
Answers
Answer:
i need help with this exact question.
Explanation: