Q & A - Science

Q & A

• Which of the following statements best describes the pH of a 0.010 M solution of Which of the following statements best describes the pH of a 0.010 M solution of acetic acid?A)The pH is greater than 0 but less than 2.B)The pH is exactly 2.C)The pH is ...
• The half-life of technetium99 is 60 hours How much of a 50 mg sample will remain after 24 hours The half-life of technetium-99 is 6.0 hours.  How much of a 50.0 mg sample will remain after 24 hours?A)25.0 mgD)3.12 mgB)12.5 mgE)none of the sample will remainC)6.25 mg...
• Which of the following statements regarding oxidation-reduction reactions is correct Which of the following statements regarding oxidation-reduction reactions is correct?A)Oxidation-reduction reactions involve sharing electrons.B)Oxidation can occur witho...
• Oxidizing agent Reducing agent Oxidizing agent   Reducing agentA)Hg(l)             Fe3+aq)D)Fe3+aq)             Hg(lB)Hg(l)             Claq)E)Claq)             Fe3+aqC)Fe3+aq)             Claq35.     ...
• Which of the following is the strongest acid Which of the following is the strongest acid?A)HNO2Ka = 5.6 ? 104D)CH3CO2H, Ka = 1.8 ? 105B)HCN, Ka = 6.2 ? 1010E)HCO2H, Ka = 1.8 ? 104C)NH4Ka = 5.6 ? 101062.            ...
• Assignment Scenario Albury in New South Wales and Wodonga in Victoria are twin cities separated geographically by the Murray River and politically by a State border in Australia It also houses the A Assignment  ScenarioAlbury in New South Wales and Wodonga in Victoria are twin cities separated geographically by the Murray River and politically by a State border  in A...
• Three dimension Three point particles are fixed in place in an xyz coordinate system Particle at the origin has mas Particle at xyz coordinates has mass and particle C at coordina has mass A fourt Three dimension Three point particles are fixed in place in an xyz coordinate system  Particle at the origin has mas  Particleat xyz coordinates has mass  and particle C ...
• Suppose that a particle having positive total energy E moves in a one dimensional lopsided box given by the potential energy field Suppose that a particle having positive total energy E  moves in a one dimensional lopsided box given by the potential energy field
• he following function written in pseudocode inputs INCOME as a variable and outputs the TAX corresponding to that income You can think of this as a greatly simplified income tax IF THEN a TAX ELSE he following function written in pseudocode inputs INCOME as a variable and outputs the TAX corresponding to that income You can think of this as a greatly simplified inc...
• When posting here in the Weekly Summary section please do not post answers only but rather show how you obtained your answers in a step by step manner If your solution is correct it is in your best in When posting here in the Weekly Summary section please do not post answers only but rather show how you obtained your answers in a step by step manner If your solution is...
• Two slits of width each in an opaque material are separated by a center to center distance of A monochromatic light of wavelength nm is incident on the double slit One nds a combined interference an Two slits of width each in an opaque material  are separated by a center to center distance of A monochromatic light of wavelength  nm is incident on the double slit One ...
• The media and popular literature often refers to the early hominin species as apemen This is however a very inappropriate term In this assignment you are to consider the nature of the hominins Answer The media and popular literature often refers to the early hominin species as apemen This is however a very inappropriate term In this assignment you are to consider the ...
• If a sample of an isotope having a mass number of decays at a rate of what is its halflife If a  sample of an isotope having a mass number of  decays at a rate of what is its halflife 
• Did the genome assembly you performed guarantee the optimal assembly Explain why or why not Rhodobacter spheroides genome and assembled with SPAdes What sequencing libraries would you suggest adding Did the genome assembly you performed guarantee the optimal assembly  Explain why or why not Rhodobacter spheroides genome and assembled with SPAdes What sequencing libra...
• Developing a business case is about putting forward an argument or opportunity that a project or initiative could be competed it needs both development of what how when and where you might deliver yo Developing a business case is about putting forward an argument oropportunity that a project or initiative could be competed  it needsboth development of what how when an...
• What are Primary and secondary pollutants in atmosphere What are Primary and secondary pollutants in atmosphere
• James Bond is in trouble To defuse a bomb and save the world he needs the fingerprint of a villain However the villain used acid to remove his fingerprints so nobody can copy it You headmaster of R&D James Bond is in trouble To defuse a bomb and save the world he needs the fingerprint of a villain However  the villain used acid to remove his fingerprints so nobody can...
• A man initially standing at the point O walks along a pier pulling a rowboat by a rope of length L The man keeps the rope straight and taut The path followed by the boat is a curve called a tractrix a A man initially standing at the point O walks along a pier pulling a rowboat by a rope of length L The man keeps the rope straight and taut The path followed by the boat ...
• Calculate the acceleration due to gravity inside Earth as a function of the radial distance r from the planets center Hint Imagine that a mine shaft has been drilled from the surface to Earths center Calculate the acceleration due to gravity inside Earth as a function of the radial distance r from the planets center Hint  Imagine that a mine shaft has been drilled fro...
• A woman has a color blind father but husband with normal vision what are the chances of there sons and daughters to be color blind for sons for daughters for sons for daughters for sons zero for dau A woman has a color blind father but husband with normal vision what are the chances of there sons and daughters to be color blind for sons for daughters  for sons for da...
• MAT Module Five Application Project Guidelines and Rubric Equilibrium Temperature Distribution This project gives students an introduction to one type of problem encountered in thermodynamics that of MAT Module Five Application Project Guidelines and Rubric Equilibrium Temperature Distribution This project gives students an introduction to one type of problem encounte...
• Introduction Score out of Category These cells are hiddendisguised by coloring their text white so they are there when I need them but dont distract students before that Inertial Navigation means figu Introduction Score out of Category These cells are hiddendisguised by coloring their text white so they are there when I need them but dont distract students before that ...
• Consider the steady state temperature distribution in a square plate of The temperatures of and is maintained respectively along top left and bottom edges of a square plate while the temperature of Consider the steady state temperature distribution in a square plate of  The temperatures of and  is maintained respectively along top left and bottom edges of a square p...
• Mr Chan in his early was having problems chewing his food He was asked to stick out his tongue It deviated to the right and its right side was quite wasted What cranial nerve was impaired Explain Mr  Chan in his early  was having problems chewing his food He was asked to stick out his tongue It deviated to the right and its right side was quite wasted What cranial...
• Question is attached below TBP and TCQ are tangent of a circle from T Angel ABP and Angel ACQ Find the value of BAC And BTC angle Question is attached below TBP and TCQ are tangent of a circle from T Angel ABP and Angel ACQ  Find the value of BAC And BTC angle 
• If sucros are dissolved in water what is the boiling point of the resulting solution Kb for water If sucros are dissolved in  water what is the boiling point of the resulting solution Kb for water 
• The molar volume that is the total volume divided by the number of moles of a certain form of solid lead is cm mol Assuming a cubic closest packed face centered structure determine the radius of a P The molar volume that is the total volume divided by the number of moles of a certain form of solid lead is  cm mol Assuming a cubic closest packed face centered  structu...
• A box of negligible mass rests at the left end of a plank The width of the box is and sand is to be distributed uniformly throughout it The center of gravity of the nonuniform plank is cmfrom the righ A box of negligible mass rests at the left end of a plank The width of the box is and sand is to be distributed uniformly throughout it The center of gravity of the nonun...
• Find a current research article within three years in a peerreviewed journal on any topic related to polymer science or polymer engineering Write a news article that presents the important new informa Find a current research article within three years in a peerreviewed journal on any topic related to polymer science or polymer engineering Write a news article that pres...
• A particle starts with an angular acceleration square it moves rad in random interval of find out the time at which random interval starts A particle starts with an angular acceleration  square it moves  rad in random interval of  find out the time at which random interval starts
• A wheel has a constant angular acceleration of In a second interval it turns through an angle of radians Assuming the wheel started from rest how long had it been in motion from the start of thus se A wheel has a constant angular acceleration of In a second interval it turns through an angle of  radians Assuming the wheel started from rest how long had it been in mot...
• This problem shows you how to use symmetry argument to greatly simplifynormal mode calculations As a simplified prototype model for the vibrations of anethylene molecule we will consider only vibrati This problem shows you how to use symmetry argument to greatly simplifynormal mode calculations  As a simplified prototype model for the vibrations of anethylene molecule...
• Assessment topic Research a topic in mathematics which has application in information technology Submission requirements One word or PDF document Task Details This assignment will test the students sk Assessment topic Research a topic in mathematics which has application in information technology Submission requirements One word or PDF documentTask Details This assignm...
• Calculate the current ratio and the quick ratio for the following partial financial statement for Tootsie Roll Round your answers to the nearest hundred Calculate the current ratio and the quick ratio for the following partial financial statement for Tootsie Roll Round your answers to the nearest hundred
• A very old vending machine accepts only nickels and dimes Candy costs up to but sometimes the machine will dispense candy without any coins being inserted into the machine Which inequality shows al A very old vending machine accepts only nickels  and dimes  Candy costs up to  but sometimes the machine will dispense candy without any coins being inserted into the mac...
• Consider a rigid rotator system whose Hamiltonian operator is h Suppose that the initral wavefunction is given by Express the initial wavefunction in terms What is What is  Consider a rigid rotator system whose Hamiltonian operator is hSuppose that the initral wavefunction is given byExpress the initial wavefunction in terms What is  What is 
• Now add an interaction term for s fRatio with Private Store your model results in an object named fit.inter Display a summary of your results Then do an anova test to evaluate if fitinter has more pre Now add an interaction term for s fRatio with Private Store your model results in an object named fit.inter Display a summary of your results Then do an anova test to eva...
• Determine whether the alternating series is absolutely convergent conditionally convergent or divergent using the alternating series test and explain your decision Please show all work Determine whether the alternating series is absolutely convergent conditionally convergent or divergent using the alternating series test and explain your decision Please...
• subject pharmacology Drug interactions Many drug interactions occur at the level of the cytochrome enzymes CYPs What are the main mechanisms for drug interactions involving CYPs Where could a doctor subject pharmacology  Drug interactions Many drug interactions occur at the level of the cytochrome enzymes CYPs What are the main mechanisms for drug interactions involv...
• Three formations each thick overlie one another If a constantvelocityvertical flow field is set up across the set of formations with at thetop and h at the bottom calculate h at the two internal bo Three formations each  thick overlie one another If a constantvelocityvertical flow field is set up across the set of formations with  at thetop and h  at the bottom calc...
• Tina purchases a new computer by financing it on the no payment until next year plan The cash price of the computeris The financing agreement requires equal payments every month for two years If the f Tina purchases a new computer by financing it on the no payment until next year plan The cash price of the computeris The financing agreement requires equal payments ever...
• A keg of beer is covered with a wet towel Imagine that the keg gains energy from its surroundings at a rate of At what rate in grams per second must water evaporate from a towel placed over the keg t A keg of beer is covered with a wet towel Imagine that the keg gains energy from its surroundings at a rate of  At what rate in grams per second must water evaporate from...
• define the following terms laminar flow intermittent streams oxbow lake thalweg benthic sinuosity reach define the following terms laminar flow intermittent streams  oxbow lake thalweg benthic sinuosity  reach
• In assessment task you need to write about your pharmacology topic in a style which is suitable for online delivery a website blog message forum or social software To do this effectively you need to c In assessment task you need to write about yourpharmacology topic in a style which is suitable foronline delivery a website blog message forum orsocial softwareTo do this...
• According to the Crown ATM Network the mean ATM withdrawal is PayEase Inc manufacturers a new model of ATM that allows one to pay bills electric water parking tickets and so on as well as withdraw m According to the Crown ATM Network the mean ATM withdrawal is  PayEase Inc manufacturers a new model of ATM that allows one to pay bills  electric water parking tickets a...
• A cat drops from a shelf above the floor and lands on all four feet His legs bring him to a stop in a distance of A cat drops from a shelf  above the floor and lands on all four feet His legs bring him to a stop in a distance of 
• Tina purchases a new computer by financing it on the no payment until next yea plan The cash price of the computeris The financing agreement requires equal payments every month for two years If the fi Tina purchases a new computer by financing it on the no payment until next yea plan The cash price of the computeris The financing agreement requires equal payments every...
• A keg of beer is covered with a wet towel Imagine that the keg gains energy from its surroundings at a rate of At what rate in grams per second must water evaporate from a towel placed over the keg to A keg of beer is covered with a wet towel Imagine that the keg gains energy from its surroundings at a rate of At what rate in grams per second must water evaporate from ...
• define the following terms laminar flow intermittent streams oxbow lake thalweg benthic sinuosity reach define the following terms  laminar flow intermittent streams oxbow lake thalweg benthic sinuosity  reach
• Discuss how aeration occurs and its role in the stream environmentExp lain why streams are said to be either an erosion stage or deposition stage Discuss how aeration occurs and its role in the stream environmentExp lain why streams are said to be either an erosion stage or deposition stage