Which examples are possible environmental impacts of flooding? Select the two correct answers. (1 point,
damage to homes

Answers

Answer 1

Reduction in tourism and Groundwater recharge are possible environmental impacts of flooding  .

What are floods ?

During floods, people need to quickly move themselves and their most valuable possessions to higher ground. Leaving home in search of a safer place is called evacuation. Floods occur at irregular intervals and vary in magnitude, duration and areas affected.

Water flows naturally from high ground to low ground. This means that low-lying areas can flood quickly before they start reaching higher elevations. In rivers, flooding can occur, especially at bends and meanders in the channel, when flow exceeds the bed's capacity. Floods often damage homes and businesses when they are in the natural floodplains of rivers.

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Related Questions

5. What is the difference between an orbital, a
sublevel, and an energy level?

Answers

Energy levels are the fixed distances of electrons from the nucleus, sublevel is a level that is lower than another level whereas an orbital is the most likely location of an electron present around an atom.

What is orbital, sublevel, and energy level?

The sublevels contain carry orbitals. Orbitals are spaces that have a high prospect of containing an electron. An orbital is an area or location where the electrons are present. There can be two electrons in one orbital extreme. Each energy level or shell is divided into many sublevels. Both sublevel and subshell are used interchangeably. The sublevels are constituted by the letters s, p, d, and f. Each energy level has certain sub-levels. Therefore, these circular orbits are called as energy levels or energy shells. The orbits of an atom act for the energy levels of the electrons in it.

So we can conclude that Orbitals and sublevels are both concepts used in chemistry to describe the energy states of electrons.

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how many grams of glucose (c6h12o6) are in 4.9 moles of glucose? report your answer to the nearest 1 g.

Answers

The answer is 0.0055 grams of glucose (c6h12o6) are in 4.9 moles of glucose

The formula weight is a quantity calculated in chemistry by multiplying each element's atomic weight (measured in atomic mass units) by the number of atoms it has in the formula, and then adding up the results. Sometimes referred to as equation weights, these relative weights computed from the chemical equation. This is how isotropically weighted averages are used to get the molar mass(of glucose) (average molecular weight). This differs from molecular mass, which is the weight of a single molecule made up of distinct isotopes.

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Which of these statements is one of the conclusions that formed the basis of dalton’s atomic theory?.

Answers

The correct answer is option D.

The statement that formed the basis of Dalton’s atomic theory is atoms are the smallest particles of matter and cannot be divided farther.

In 1808, Dalton presented a theory named atomic theory which suggests that atoms are the smallest particles of an element and it is impossible to divide them further.

According to his theory every element is composed of these tiny particles.

Furthermore, his theory suggests that atoms neither can be divided nor destroyed.

In a particular matter, for example gold, all atoms have similar properties while their mass varies for every single different element.

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The complete question is:

Which of these statements is one of the conclusions that formed the basis of Dalton’s atomic theory?

a. Atoms can only change into atoms of another element through nuclear reactions.

b. Atoms of gases have less mass than atoms of liquids and solids.

c. Atoms of a particular element all have the same number of protons.

d. Atoms are the smallest particles of matter and cannot be divided farther.

sam wanted to do a demonstration for her class. the directions called for kcl. there was not kcl in the stockroom. what would be the best choice to substitute in the reaction?

Answers

NaCl would be the best choice to substitute in the reaction

The transfer of electrons from one reactant to another occurs during an oxidation-reduction (redox) reaction.

Numerous processes that you have already examined, such as single replacement, combustion, and combination, are redox processes. The loss of electrons is called oxidation. Gaining electrons is what reduction is. In the process, electrons are lost and gained simultaneously. For instance, when oxygen and elemental calcium react, calcium oxide is the result.

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in order to create a 0.500 m 0.500 m solution of h c l hcl for use in a laboratory experiment, how much distilled water must be used to dilute 100 ml 100 ml of a 3.00 m h c l 3.00 m hcl solution?

Answers

For the necessary concentration, 500 ml distilled water must be added here.

Can we drink distilled water?

You can consume distilled water, of course. Because it is flatter and less flavored as tap and bottled waters, you might not enjoy the taste. Businesses boil water, collect the steam, and then condense the liquid back to liquid to create distilled water. Minerals and pollutants are taken out of the water by this method.

Briefing:

Molarity= Volume /Moles​

Moles of HCl present =100×10 −3 ×3=0.3

Required molarity =0.5

∴0.5= Volume /0.3

​∴Volume=0.6 L=600 mL

Here, 600 mL total, 100 mL at the beginning

For the necessary concentration, 500 ml distilled water must be added here.

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Electronic configuration An element's atomic number tells you the number of _______________ in the nucleus. The number of in an atom is equal to the number of In the first shell of an atom there are shell there are_______ electrons. In the third shell there are electrons. electrons. In the second​

Answers

Answer:

Electronic configuration An element's atomic number tells you the number of protons in the nucleus. The number of protons in an atom is equal to the number of electrons. In the first shell of an atom there are 2 electrons. In the third shell there are 18 electrons.

A volume of 25cm3 of a carbonate solution of concentration 0.2mol dm-3 was neutralized by 20 cm3 of acid of concentration 0.5 mol dm-3. The mole ratio in which the reactants combine is?
1 mol of carbonate to 1 mol of acid

1 mol of carbonate to 2 mol of acid

2 mol carbonate to 1 mol of acid

3 mol of carbonate to 1 mol of acid

Answers

The correct mole ratio of the reaction is 1 mol of carbonate to 2 mol of acid. Option B

What is the mole ratio?

We know that the ratio of the reactants that are involved in a reaction is what we call the mole ratio. We have to note that a neutralization reaction is the type of reaction that occurs between an acid and a base. We also have to recall that is vita to be able to write the balanced reaction equation before we can be able to find the mole ratio.

Now, we have the balanced reaction equation as;[tex]CO_{3} ^2-(aq) + 2H^+(aq) ----- > H2O(l) + CO2(g)[/tex]. The reaction is thus a 1:2 reaction for the carbonate and acid.

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chemicals that are not medicinal but are encountered in the environment or in industrial activity include all of the following, except...

Answers

Carbon Dioxide.

A presumptive test called phenolphthalein reacts with the heme molecule found in blood. Pink is produced when a reaction is favorable. While bloodstains typically have a reddish-brown hue, the color of the substrate or the stain's age can have an impact on how visible or noticeable the stain is.

A technique for separating substances or metal complexes based on their relative solubilities in two different immiscible liquids, typically water (polar) and an organic solvent, is known as liquid-liquid extraction (LLE), also known as solvent extraction and partitioning (non-polar).

Precipitin Test confirmation is required for positive results. The serologist must determine whether a stain is actually blood after a presumptive test suggests it might be blood. A precipititin test can detect proteins that are only present in human blood.

The Ouchterlony test compares the responses of a blood sample to particular antibodies to identify if it is human or animal. A sample of the unidentified bloodstain is put in an agar gel well.

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calculate the empirical formula for a compound that contains 40.0% carbon, 6.70% hydrogen, and 53.3% oxygen

Answers

The empirical formula for the hydrocarbon is CH₂O.

First, we assume that we have 100g of formaldehyde

According to the question we have 40.0% of carbon, 6.70% of hydrogen, and 53.3% of oxygen. With help of this, we calculate the moles of individual elements.

Moles of C = 40.0 g of C × 1 mol of C / 12.01 g C = 3.331 mol C

Moles of H = 6.7 g of H × 1 mol of H / 1.008 g H = 6.65 mol H

Moles of O = 53.3 g of O × 1 mol of O / 16.00 g O = 3.331 mol O

To get the molar ratio we divide all the moles by the smallest moles which are 3.331. From here the ratio comes out to be C: H: O = 1:2:1.

Thus the empirical formula is, CH₂O.

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5
Use this equation for the next question.
Mg(OH)2 + NaCl ® MgCl₂ + NaOH
Does it satisfy the Law of Conservation of Matter?
Yes
No

Answers

Answer:

Chemistry Secondary School answered Mg (OH)₂ + HCl→ MgCl₂ + H₂O balance it Answer 5.0 /5 6 Diabolical Answer: The answer will be; = Mg (OH)₂ + 2 HCl → MgCl₂ + 2 H₂O That's all. Find Chemistry textbook solutions? Class 12 Class 11 Class 10 Class 9 Class 8 Class 7 Class 6 Preeti Gupta - All In One Chemistry 11 3080 solutions

4) Complete the notation configuration for Neon.

Answers

Answer:

Explanation:

[He]2s²2p⁶

an ax ceramic compound has the rock salt crystal structure. if the radii of the a and x ions are 0.137 nm and 0.241 nm, respectively, and the respective atomic weights are 22.7 g/mol and 91.4 g/mol, what is the density of this material?

Answers

The density of the material would be 1.75 gm/cc.

p = n'∑Ac + ∑AA/VcNA

= n'(∑Ac + ∑AA)/9³NA

=n'(∑Ac + ∑AA)/(2(rA + rX))³ NA

n' = number of atoms per unit cell

= 4(assumption)

rA = 0.137 × 10⁻⁷ cm

rX = 0.241 × 10⁻⁷ cm

NA = Avagadros number

= 6.022 × 10²³

∑Ac = Atomic weight of all cations

∑AA = Atomic weight of all anions

p = n'(∑Ac + ∑∑AA)/(2(rA + rx))³NA

= 4(22.7 + 91.4/(2(0.137 × 10⁻⁷ + 0.241 × 10⁻⁷))³ 6.022× 10²³

= 1.75 gm/cc

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when 100 cm3 of 1.0 moldm-3 hcl is mixed with 100 cm3 of 1.0 moldm-3 naoh, the temperature of the resulting solution increases by 5.0 c what will be the temperature change

Answers

Temperature remains the same as the amount of heat and the concentration remains the same..

When 100cm3 of 1.0 mol dm-3 hcl is mixed with 100 cm3 of 1.0 mol dm-3 of NaOH the temperature remains the same. Here, the volume of the solution gets half .mass and heat released reduced by half.so, temperature remains the same as the concentration of the solution does not change.concentration of the solution is the amount of solute present in the given solution.

So, the temperature remains the same as 5C.We know this from calculating heat exchange using specific heat capacities.This process explains when two or more substances at different temperature are brought together to the environment they eventually reach the same temperature.

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g if a hand cream appears smooth and uniform after you prepared it, but after a week of storage most of the water and most of the oil separated, what do you think must have gone wrong with the preparation?

Answers

Because of Emulsion, when we store hand cream for a week its oil and water get separated.

Water and oil are necessary to make hand cream. water is an emulsifying agent.oil and water mixtures are emulsions when shaken together.The oil will form droplets and dispersed throughout the water.In this process,the most necessary is to mix the oil and water properly.The content of the ingredients may have been miscalculated or the temperature of the water is not enough.

Emulsifiers are added to hand cream.This is based on chemicals phospholipids.These are obtained from plants,nuts,berries ,leafs etc.

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Calculate the mole fraction of the total ions in an aqueous solution prepared by dissolving 0.400 moles of caf2 in 850.0 g of water.

Answers

the mole fraction of the total ions in an aqueous solution prepared by dissolving 0.400 moles of caf2 in 850.0 g of water. is 0.00840 moles

The calculation of the mole fraction is as follow:

As we know that

Molar mass = Number of grams ÷ number of moles

Or

number of moles = Number of grams ÷ molar mass

from the question

Number of moles of CaI2 = 0.400

And, Molar mass of water = 18.0 g/mol

Now we can calculate  the  moles of water is

= 850.0 g ÷ 18.0 g/mol

= 47.22 mol

And, Total number of moles is

= 0.400 + 47.22

= 47.62

So, Mole fraction of CaI2 is

= 0.400 ÷ 47.62

= 0.00840 mole

hence, the mole fraction of the total ions in an aqueous solution prepared by dissolving 0.400 moles of caf2 in 850.0 g of water. is 0.00840 moles

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. at the beginning of his experiment, josh has 10 g of element a and 10 g or element b. when finished with the experiment, josh has 20 g of element a and b combined. this demonstrates what law?

Answers

josh has 10 g of element a and 10 g or element b. when finished with the experiment, josh has 20 g of element a and b combined. This demonstrates ' Law of conservation of mass'.

In a closed system, mass cannot be created or destroyed, but it can be changed from one form to another. Thus, mass of a system remains same before and after the reaction.

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Which type of neuron begins in most body organs and carries information toward the central nervous system?.

Answers

Answer:

Afferent or sensory neurons

Explanation:

They collect stimuli received by receptors throughout the body, including the skin, eyes, ears, nose, and tongue as well as pain and other receptors in the internal organs. Sensory information is transmitted to the central nervous system, which includes the brain and spinal cord.

boron has two isotopes; boron-10 and boron-11. which is more abundant, given that the atomic mass of boron is 10.81?

Answers

Given that boron has an atomic mass of 10.81 amu, which is closer to 11 than 10, boron-11 is more common. This indicates that boron-11 is more prevalent.

What is atomic mass ?

The quantity of protons and neutrons in a specific element's nucleus is known as the atomic mass. This number of electrons in an object's nucleus is often indicated by its atomic number. It is an element's typical weight. The mass of the neutrons and protons can be added to determine the isotopes of an atom in an element.

Why do we use atomic mass?

The term "atomic mass" refers to the weight of a molecule or atom. To determine the average weight of elements and macromolecules as well as to resolve stoichiometry issues, the number of protons is used.

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a flask is filled with 1.65 moles of a gas at 26.1 k and 444.8 mm hg. the flask is then opened and additional 1.76 moles are added. the temperature of the flask is then changed to 281.1 k. what is the pressure (in atm) of the flask under these final conditions?

Answers

The pressure of the flask under these final conditions is 13 atm .

What are moles ?

The current SI definition of moles and the "new SI" draft definition will be reviewed. Current textbook treatments of moles are compared to these official definitions. From a historical perspective, in 1971 he reviews the treatment of moles and material quantities in textbooks before and after the introduction of these quantities in SI. Textbook definitions do not always match official definitions, but reflect common usage by chemists. This is because when the new SI is adopted, the textbook definition will likely be closer to the official definition, and the draft definition more closely matches what is found in many textbooks than the current official definition. However, SI-based quantities of substances are likely to continue to cause problems for chemistry teachers and, if retained, are largely ignored by chemistry practitioners.

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stion 1 of 10
What does a pH of 7 say about a solution?
O A. The solution is neutral.
B. The solution is at equilibrium.
OC. The solution is acidic.
O D. The solution is basic.

Answers

The correct answer is A. A pH of 7 say about a solution is The solution is neutral.

What is a pH of 7

A pH of 7 indicates a neutral solution. The pH scale is a logarithmic scale that measures the acidity or alkalinity (basicity) of a solution. A pH value of 7 is considered neutral, which means the concentration of hydrogen ions (H+) is equal to the concentration of hydroxide ions (OH-) in the solution. In other words, the solution is neither acidic nor basic.

Acidic solutions have a higher concentration of hydrogen ions (H+), which makes them more acidic. The lower the pH value, the higher the concentration of H+ ions and the stronger the acid.

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what is the concentration in molarity of lithium hydroxide prepared by dissolving 48.0 grams 48.0 grams of solid in sufficient water to make 250 ml 250 ml of solution?

Answers

the concentration of lithium hydroxide in molarity was 8M

what are the properties of lithium hydroxide?

A transparent to water-white liquid with a possible strong odour is what lithium hydroxide solution looks like. Skin, eyes, and mucous membranes may have very irritating contact reactions. Through consumption, inhalation, or skin absorption, it may be harmful. Other compounds are created using it.

Given,

weight =48 g

No. of moles  =2448=2 moles

volume =250mL

Molarity Volume (in L)No. of moles=0.25L2=8M

=8M

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Which missing item would complete this alpha decay reaction?

Answers

The missing item which would complete this alpha decay reaction is: C. ²⁵³Fm₉₈.

The types of radioactive decay.

In Science, there are three (3) main types of radioactive decay and these include the following:

Beta decayGamma decayAlpha decay

What is an alpha decay?

An alpha decay can be defined as a type of radioactive decay in which the atomic nucleus of a radioactive element emits an alpha particle, thereby, producing chemical elements that have different atomic nucleus.

During an alpha decay, a radioactive element such as fermium (Fe) with a mass number of 257 would be decreased by four (4) while its atomic number (number of protons) of 100 is decreased by two (2), to produce an isotope and an atom of Helium (⁴He₂), as illustrated in the chemical reaction below:

²⁵⁷Fe₁₀₀  ---->   ²⁵³Fm₉₈ + ⁴He₂

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what precautions should a remote pic do to prevent possible inflight emergencies when using lithium-based batteries?

Answers

When using lithium-based batteries In order to enable optimal recharging, store the batteries in a fridge.

What are the dangers of lithium batteries?

As long as there are no flaws as well as the cells are not damaged, lithium batteries are type of ethical and unlikely to malfunction. Lithium batteries may pose a fire and/or detonation risk if they are damaged or unable to function safely.

Lithium or ion batteries: which performs better?

For reliable and high-power use, lithium-ion and battery packs are both appropriate. But compared to battery packs, battery packs are more effective and common. This is so that they may be used in large quantities due to their higher power levels.

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3. All chemical reactions, whether they are endothermic or exothermic, must reach a particular activation energy to get started.


Describe the difference between reactions that have high activation energy and reactions that have low activation energy​

Answers

Explanation:

for reactions to occur, the reactants must've reach a certain amount of energy for collisions to occur. hence, if a reaction has a lower activation energy, this energy can be reached sooner therefore, reaction would occur faster.

how many atoms of sulfur are in 60.0 g of aluminum sulfide, al2s3? molar masses: al: 27.0 g/mol s: 32.1 g/mol

Answers

There are [tex]1.77 * 10^{24}[/tex] atoms of sulfur in 60.0 g of aluminum sulfide.

How do you calculate the number of atoms in a gram?

To get the answer in grams, divide the element's relative atomic mass by Avogadro's number. The same method can be used to determine a molecule's mass. Add up all the atomic masses in the chemical formula in this situation and divide by Avogadro's constant.

What is the purpose of aluminum sulfide?

Hydrogen sulfide is made with the help of aluminum sulfur. The chemical industry uses it most frequently. It is employed in the production of cathodes. It is used to create structures for nano-networks.

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I need help with the table
But not the Lewis dot diagram part

Answers

The valence electrons and oxidation number and the total no. of dot is given below.:

a) Ca -    2       0      2

b) Ca⁺² -      0    + 2     0

c) Cl             7       0     7

c) Cl⁻            8       -1    8

d) Li               1       0    1

e) Al³⁺            3     +3    0

             Valence electrons      Oxidation number     total number of dots

a) Ca                     2                                   0                                 2

b) Ca⁺²                   0                                  + 2                             0

c) Cl                        7                                   0                                 7

c) Cl⁻                      8                                    -1                                8

d) Li                        1                                      0                               1

e) Al³⁺                     3                                    +3                               0

Thus, the total number of valence electron , oxidation number and the total number of dots is given as:

a) a) Ca -    2       0      2

b) Ca⁺² -      0    + 2     0

c) Cl             7       0     7

c) Cl⁻            8       -1    8

d) Li               1       0    1

e) Al³⁺            3     +3    0

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if you close a pressure cooker with the contents at 280k and 1 atm, what is the pressure when the contents are heated up to 406k ?

Answers

The new pressure will be 1.45atm.

Ideal gas equation gave a relation between pressure, temperature and volume. It can be expressed as:

PV=nRT

Where, P is pressure, V is volume and T is temperature

The given data:

[tex]T_{1}[/tex] = 280K

[tex]T_{2}[/tex]= 406K

[tex]P_{1}[/tex] = 1 atm

[tex]P_{2}[/tex] = ?

The amount of unknown pressure can be determined by using the formula:

P1/T1=P2/T2....(i)

Now, put the values of given data in above equation.

P2= P1T2/T1

P2=1×406K / 280

P2 = 1.45atm

Therefore, the new pressure will be 1.45atm

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5. describe a process in which 2 substances that are mixed together can be separated from each other. would this be a physical change or a chemical change? provide an explanation for your answer.

Answers

When two compounds are combined and change into a third substance, this is referred to as a biochemical reaction (or chemical reaction). When two substances are combined, not all of them react chemically.

How does chemical change?

When one chemical material changes into one or more others, as when iron rusts, this is referred to as a chemical transformation. Chemical reactions produce changes in the way that molecules and atoms are ordered, which leads to the formation of new substances with new properties.

Describe a chemical example:

Examples for chemicals include the basic building blocks, such as zinc, nitrogen, and oxygen; combinations created from these building blocks, such as water, dioxide, or salt; and more complicated substances, such as the air you breathe, rainfall, a chicken, a car, etc.

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ridget performed an investigation to determine if a television set transformed electrical energy into other types of energy. She recorded her observations in a table. What statement best describes the results? Question Observation Does it transform into heat energy? Yes Does it transform into light energy? Yes Does it transform into sound energy? Yes Does it transform into energy of motion? No A television transforms electrical energy into heat and light energy. Electrical energy transforms into more than one type of energy. Sound energy is transformed from heat and light energy. You can transform electrical energy into energy of motion.

Answers

The statements that best describe Bridget's recorded observations are:

Does it transform into heat energy? YesDoes it transform into light energy? YesDoes it transform into sound energy? YesDoes it transform into the energy of motion? No
What is the explanation for the above observations?

1 A television is a device that converts electrical energy into heat and light energy.

2 Electrical energy may be converted into other types of energy.

3 Sound energy is created by combining heat and light energy.

4 Electrical energy may be converted into motion energy.

Energy transfer is the process of transferring energy from one system to another, such as by heat, work, or mass transfer.

Energy is required for living organisms to grow, breathe, reproduce, and move. Because energy cannot be created from a vacuum or a void, it must be transported via the biosphere. The sun is the principal source of energy for practically every ecosystem on Earth.

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Full Question:

Bridget performed an investigation to determine if a television set transformed electrical energy into other types of energy. She recorded her observations in a table. What statement best describes the results?

Question Observation

Does it transform into heat energy?

Does it transform into light energy?

Does it transform into sound energy?

Does it transform into energy of motion?


Which of the following diagram shows a pure substance that is composed of only individual atoms and not molecules?

liquid water
(H₂O)

hydrogen gas
(H₂)

carbon dioxide gas
(CO₂)

argon gas
(Ar)

Answers

Answer:

Argon Gas

Explanation:

:)

Other Questions
why would the consumption function (if extended) intersect the spending axis at a positive value? what does this mean? is it realistic? in piaget's theory, when you need to change the way you think about something in order to understand a new experience, you are engaging in the process of . 25.0 feet50.0 feet20.6 feet19.4 feet The findings from twin studies indicate that identical twins are much more similar than fraternal twins on which of the following?conscientiousnessneuroticismextraversionall of the above Comet 67P is the name of the cometABCDon which the scientific team planned to land aspacecraft.that formed the moon thousands of years ago.that caused the rings of Saturn to change their colors.on which both sand and metals have been found. les agrees to install a new hard drive and software on marilee's computer in exchange for four of her used textbooks. after he installs the hard drive, les says he won't install the software unless marilee gives him two more books. what legal position are the parties in now? The letter "B" is labeling what part of the wave?BWavelengthCompression RarefactionAmplitude How did the US government respond to growing nativist attitudes the mean selling price of senior condominium in green valley over a year was $215,000. the population standard deviation was $25,000. a random sample of 100 new unit sales was obtained. a. what is the probability that the sample mean selling price was more than $210,000? Can I please have facts about catapults Solve each equation for x. Show all steps. A) log base 4 (x^2 -12x+48) =2B) 27^(4x-6) =(1/9)^(2x-7) suppose you need to prepare 100. ml of a solution with the 6.0 mg/l concentration of a dye and what you have is a 30. mg/l stock solution of the dye and pure water. what amounts of the liquids should be mixed? a mortgagge loan in which the interest rate charged fluctuates with the level of current interest rates is called Which selection best describes what granger believes to be the major difference between man and the phoenix?. Solve for x:[tex]\sqrt{x-3} =\sqrt{x} +3[/tex]A. -2B. 2C. no solution D. 4 Which rightdid the states have under the Articles of Confederation? A.theright to elect individual representatives to the Continental CongressO B.the right to wage war and make peaceC.the right to sign treaties with other governments D.the right to set up post offices how are phenolics used in microbial control? multiple select question. added to products household disinfection clinical disinfection routine skin antisepsis What number should go in the empty boxes to complete the calculation for finding the product of help me please omg !!!!!! What tone is established in paragraph 6 of the passage from The Namesake?