Questions Asked on
February 14, 2016

Chemistry
A solution containing equal masses of glycerol, C3H8O3, and water has a density of 1.10 g/mL. Calculate the molality of glycerol. I got 11.9 m.
asked by Student 
algebra
The number of years, N(r), since two independently evolving languages split off from a common ancestral language is approximated by N(r)= 5000 1n r, where r is the proportion of the words from the ancestral language that is common to both languages now.
asked by mm 
Chemistry
1. As the intermolecular forces between molecules increase in magnitude, do you expect each of the following to increase, decrease or remain the same? My answers: Viscosity: increase Boiling point: increase Vapor pressure: decrease Surface tension:
asked by Student 
Science
Why are weather balloon soundings done at the same time around the world?
asked by Anonymous 
Maths
principal = 3000 rate =35/4 time = 1year 2 months interest =
asked by Jash 
Maths
Find the equation of the parabola with latus rectum joining the points (3,5) and (3,3)
asked by Angelina 
science
the radius of planet x is twice that of the earth and its mass is also twice that of the earth. The gravitational acceleration on planet x would be approximatley?
asked by thabo 
math
sum of 1 to 198 odd positive intigers
asked by anil 
Math
One positive integer is three moee than twice another and their sum is greater than 65 but less than 75. What pairs of integers satisfy this conditions?
asked by Raquel 
Maths
Find the equation of the parabola with its axis parallel to xaxis and passing through the points (2,1),(1,2),(1,3)
asked by Angelina 
math
1) the electronic scoreboard at the cricket stadium is 10m^2. For the world cup the score board was enlarged. They increased the length by 1m and the width by 3m. By doing so, the area of the scoreboard tripled. Determine the original length and width of
asked by l.x.masher 
chemistry
a) The combustion of an organic compound in the presence of excess oxygen produced a gas , which makes clear lime water turbid. What element can be identified?
asked by angy 
Maths
The vector v has magnitude 17 and makes an angle of 105 with the positive x direction. Express v in terms of components, with i and j being unit vectors pointing in the positive x and y directions.
asked by Emma 
maths
At 3h00 a clock strikes the bell 3 times. The time between first and last strike is 30 seconds. How long does it take to strike the bell at 12h00?
asked by Tsholo 
maths
A tramp collects endstubs of cigarettes and makes one full cigarette with every 6 end stubs. If he gets 72 end stubs how many full cigarettes can he smoke?
asked by Tsholo 
Physics
A tug is capable of building a ship with a force of 100 KN.if two such tugs are pulling on one ship,they can produce any force ranging from a minimum of 0 KN to a maximum of 200 KN.give a detailed explanation of how this is possible. Use diagram to support
asked by Chipu 
maths
A tramp collects endstubs of cigarettes and makes one full cigarette with every 6 end stubs. If he gets 72 end stubs how many full cigarettes can he smoke?
asked by Anonymous 
maths
a quality control inspector found that 1.3percent of 1500 computer inspected were defective how many computer were defective
asked by ali 
Mathematical Literacy
How many hours,minutes and seconds makes 1461 days ?
asked by Shereen 
maths
Let (xk) ⊂ Rn and x ∈ Rn: Show that xk → x in Rn if and only if for every y ∈ Rn the sequence (⟨xk; y⟩) ⊂ R converges to ⟨x; y⟩, that is, ⟨xk; y⟩ → ⟨x; y⟩ in R.
asked by Alice 
maths
a survey of 250 people showed that 220people favored a candidate for reelection what percent of the people surveyed favoured the candidate
asked by ali 
Foundations 06042400
1. When a manager performs symbolic duties as the head of an organization, that manager is called a A. spokesperson. C. leader. B. figurehead. D. liaison. 2. What is one characteristic of the Industrial Revolution in America? A. The farming society grew to
asked by Kroppy 
chemistry
Solutioin A is sodiun hydroxide prepared by dissolving 2.0g in 250cm what is molar concentration of sodium hydroxide
asked by ruth 
maths
there were 13426 eligible voters for a certain election one election day 8206 people cast their vote what wase the percent of voter turn out
asked by rana 
physical sciences
Calculate the mass in kilograms of one atom of ununhexium
asked by sunday 
Chemistry
A bolt is ordered with a thread of a diameter of 1.25 inches, what is the diameter in millimeters? If the order was mistaken for 1.25 centimeter by how many millimeters would the bolt be in error?
asked by Tom 
Math
Each side of a cube is increasing at the rate of 9cm/s . When the lenght of each side is 5 cm , find the rate of inscrease of its volume and total surface area .
asked by Borhan 
math
The ages of two children are 11 and 8 years. In how many years' time will the product of their ages be 208?
asked by Tofunmi 
Chemistry
calculate kp for the reaction below. PCl3(g) + Cl2(g) ⇌ PCl5(g) How can I calculate it?
asked by JPR 
maths lit,business,history,english,life orientatio
Traditional african marriage is an advantage to men only not women
asked by lerato 
algebra
three more than the product of 17 and Matt's height
asked by angela 
Math
The height of cylinder is deacrease at 0.3cm/s whereas its radius increase at the rate of 0.4cm/s.determine the rate of change of its volume if the radius and the height of the cylinder are 10 cm and 12 cm
asked by Borhan 
english
can anyone check my work?please
asked by Anonymous 
science
What do you mean by law of conservation of energy. Use this law to find speed of an object just before hitting the ground if it is allowed to fall through a height of 19.6m.
asked by peehu goyal 
Programming
#include int main() { char ch; printf("Enter Your State Name : "); scanf("%c",&ch); if(ch == 'a') printf("Shipping Charge : $25"); else if(ch == 'b') printf("Shipping Charge : $50"); else if(ch == 'c') printf("Shipping Charge : $65"); else printf("The
asked by Borhan 
english
Traditional African marriage is an advantage to men only not women
asked by lebo 
chemistry
Q1) Write down all possible dissociation reactions of the following species: a) Perchloric acid. b) Propanoic acid. c) Ammonium ion. d) Sulfurous acid.
asked by hes 
Physics
Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the 12.0V batteries of a 845kg electric car be able to supply to do the following? (a) accelerate from rest to 25.0 m/s in 1.00 min (b) climb a 200m high
asked by Laura 
science
Determine graphically the equilibrant of two forces of 15N and 20N if the angle between them is 135degrees
asked by Homework 
science
A light inelastic string connects two objects of mass 6kg and 3kg respectively. They are pulled up an inclined plane that makes an angle of 30 degrees with the horizontal,with a force of magnitude F. Ignore the mass of the string. Calculate the tension in
asked by zama 
science
it is possible for two obje to have the same dimensin but different units
asked by khensytomboy 
math
Draw four more rectangles with areas equal 24cm^2?
asked by Moeketsi 
economics,english,mathslit,accounting,business,eco
I don't know what to become when I grow up
asked by Anonymous 
Java Programming
I am trying to finish this final problem on my Java homework. Due to a death in the family I've missed a class and now am trying to get back on track. Write a driver class called GasPumpDriver that meets the following specifications: • Prompt the user to
asked by Jay 
Chemistry
1. Explain why the can collapsed using the Combined Gas Law where T1 is the initial temperature of the air inside the can before the can was inverted and T2 is the temperature of the air inside the can after it was plunged into the ice water. 2. Why did
asked by Kissan 
COMPUTER
WHAT IS THE PROGRAMME IN QBASIC THAT ALLOW THE USER TOENTER HIS/HER NAME AND THEN DISPLAY A WELCOME NOTE TO THE NAME.
asked by JOEL 
Programming
#include int main() { char ch; printf("Enter Your State Name : "); scanf("%c",&ch); if(ch == 'a') printf("Shipping Charge : $25"); else if(ch == 'b') printf("Shipping Charge : $50"); else if(ch == 'c') printf("Shipping Charge : $65"); else printf("The
asked by Borhan 
life orientation
evaluate how each of the following personality types deals with interpersonal conflict 1. passive/introvert 2. aggressive/bully 3. assertive/extrovert
asked by nthabiseng 
AP Calculus AB
Which integral gives the area of the region in the first quadrant bounded by the axes, y = e^x, x = e^y, and the line x = 4? The answer is an integral. I know y=e^x has no area bounded, but I don't know how to incorporate it all.
asked by Vikram 
life orientation
justify why each of the following attitudes and behaviour will be ineffective when dealing with interpersonal conflict 1. avoiding conflict 2. competing with one another 3. compromising your viewpoint
asked by nthabiseng 
life orientation
justify why each of the following personality types deals with interpersonal conflict: 1. avoiding conflict 2. competing with one another 3. compromising your viewpoint
asked by Anonymous 
Finance
Gluon Inc. is considering the purchase of a new high pressure glueball. It can purchase the glueball for $110,000 and sell its old lowpressure glueball, which is fully depreciated, for $20,000. The new equipment has a 10year useful life and will save
asked by Ted 
Math
the ratio of father's age to his son age is 8:3. in 5 year's time the sum of their ages will be 54. how old are they
asked by Allison 
life orientation
discuss three ways in which one's acceptance of responsibility can influence effective communication
asked by Anonymous 
Calculus
Find the area of the region bounded by the graphs of y = x, y = 6  2x, and y = 0. (4 points) 3 6 9 None of these Please help I don't know how to do this
asked by Ben 
Maths
The probability that I have to wait at the traffic lights on my way to school is 0.45. Find the probability that on 3 consecutive mornings I have to wait: A) Once B) Twice
asked by Cj 
Maths
Two tetrahedral dice are thrown; one is red and the other is blue . The number on which each lands is noted, the faces being marked 1,2,3,4. Find the probability that the sum of the numbers on which the dice lands is 6 given that the red die lands on an
asked by Luke 
chem
Suppose a g is collected in 145 mL flask wheftfle temperature of the gas is 23°C and the pressure of the gas is 785 mm Hg. Calculate the volume ofthe gas at STP.
asked by Ashley 
algebra
the 9th term of an A.P is 52 while he 12th term is 70. find the sum of is 20 term
asked by wisdom 
World History (one small question)
In the picture "The News Reaches Bogota" what is Bogota?
asked by Anonymous 
math algebra
List the following element 1) xuy 2) yut 3) xut 4) ynt
asked by akinsipe rhoda 
Algebra
The time it takes to cover the distance between two cities by car varies inversely with the speed of the car. The trip takes 15 hours for a car moving at 54 mph. What is the speed of a car that makes the trip in 27 hours?
asked by Marie 
Geometry 1
Ship A and Ship B leave from the same point in the ocean. Ship A travels 150 mi due west, turns 65° toward north, and then travels another 100 mi. Ship B travels 150 mi due east, turns 70° toward south, and then travels another 100 mi. Which ship is
asked by Anonymous 
chemistry
The first ionization energy, E, of a boron atom is 1.33 aJ. What is the wavelength of light, in nm, that is just sufficient to ionize a boron atom? Values for constants can be found here.
asked by Bibi 
chemistry
Consider a sample of excited atoms that lie 3.211 × 10–19 J above the ground state. Determine the emission wavelength (in nanometers) of these atoms.
asked by Anisha 
Science
Two tugboat A and B tow alarge boat in an easterly direction the cable which are connected to A and B respectectively make angles of 45 degrees north of east and 30 degrees south of east to the direction of motion (question it the tension fa is equal to
asked by Sanele 
life orientation
List two issues in sport that can impede nation building
asked by Anonymous 
Chemistry
A firstorder reaction has a halflife of 26.4 seconds. How long does it take for the concentration of the reactant in the reaction to fall to oneeighth of its initial value?
asked by Student 
Chemistry
A solution containing equal masses of glycerol, C3H8O3, and water has a density of 1.10 g/mL. Calculate the molality of glycerol. I got 11.9 m.
asked by Student 
Discrete Math!
Hi, How would you go about showing that the proposition below is a tautology using algebraic manipulation of logical equivalences (not using a truth table)? ( ( p ∨ q) ∧ ( p → r) ∧ ( q → r) ) → r Thanks!
asked by Kylo Ren 
mathematics
A book shelf contains x books.when 4/5 of the books are removed,I have 25 books left.how many were on the shelf.please show ur workings
asked by martins 
Math
A science class has 3 girls and 3 boys in the seventh grade and 4 girls and 1 boy in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she
asked by Brooke 
Algebra ASAP
Can anyone show me how to simplify this stepbystep? THANKS A MILLION! (6x^2)^2(0.5x)^4
asked by Astral Tellurian 
chem
How do you do this? 4 NH3 + 3 O2 > 2 N2 + 6 H2O c.) Assume 1.0 mol N2 is produced. Calculate the moles required for each reactant. Calculate the moles that can be produced for the other product. d.) Assume 0.40 mol H20 is produced. Calculate the moles
asked by Deni 
kendy
which of the following sentences demonstrates correct subject verb agreement? A) Neither the relics nor the ancient text reveal much about the ancient civilization. B)Neither the relics nor the ancient texts reveal much about the ancient civilization.
asked by ashish 
6th grade ss
1.what two climates types dominate most of northern,eastern and southern Africa???? Please help! Ms.sue
asked by Anonymous 
World History (one small question)
When was the Panama Canal completed?
asked by Anonymous 
American History
Georgia's Continued use of the dealth penalty is an attempt to fulfill the governments purpose of _____. A.)Democracy B.)Order C.)Freedom D.)Equality
asked by Anonymous 
American History
A system of government in which the power to govern is concentrated in the hands of one individual is known as? A.) Autocracy B.) Democracy C.) Theocracy D.) Oligarchy
asked by Anonymous 
American History
If one leve of government provides money to another level of government and it is distributed according to a particular set of rules that specify who is eligible for the grant and how much each eligible applicant will receive, it is known as a_____. A.)
asked by Anonymous 
physics
two people kick a ball. one of them kicks it with a force of 215.0 newtons. the other one with 189.0 newtons. their approach creates a 210.0 degree angle at the point of impact and causes the ball to go in a different direction. what is the resultant of
asked by momo 
Assessment
Authentic and performance assessments strive for greater realism and complexity of tasks under the premise that reallife problems can often be solved ______________.
asked by Chris 
math
factor out greatest common factor x(x+13)+14(x+13)
asked by janet 
Math
Create a function which has the following properties: a. It has a horizontal asymptote at y=2 b. It has a discontinuity at x=2 which is not a vertical asymptote c. It has no other discontinuities or asymptotes
asked by Cody 
Chemistry
This is a stoichiometry equation. Cu(s) + 4(HNO3)(aq) > Cu(NO3)2(aq) + 2(NO2)(g)+2(H2O)(l) If you use 6 moles of nitric acid 4(HNO3), how many moles of Copper (II) Nitrate Cu(No3)2 will be produced?
asked by Bryce 
MATH
What is the p.o.i for these set of equations (the substitution method) 2x+y=6 3x+2y=6 i tried to solve this many times but i keep getting different answers. What does x= and what does y=?
asked by PLZ HELP ME 
chemistry
If a solution containing 22.34 g of mercury(II) perchlorate is allowed to react completely with a solution containing 6.256 g of sodium sulfate, how many grams of solid precipitate will be formed?
asked by alex 
PLZ HELP MATH
this is pre calc arithmetic sequence. AT sea lvl pressure is 14.7 psi. It increases by 14.7 at every 30 ft descent. What is pressure at 1000 ft.
asked by ISOSMEXY 
pre calc, also forget my previous question
so at sea lvl pressure is 14.7. EVERY 30 FT DESCENT ITS INCREASES BY 14.7 PSI MORE. what is the pressure at 1000ft. my question is what would be the first term 14.7 or 29.4. AS 14.7 would be the 0 term. term 1 would be 29.4 as its 30 ft below. sea lvl
asked by ISOSMEXY 
Math
the amount (in milligrams) of a drug in the body t hours after taking a pill is given by A(t)=30(0.8)t . (a) What is the initial dose given? (b) What percent of the drug leaves the body each hour? Percent: (c) What is the amount of drug left after 9 hours?
asked by Sarah 
Calculus
Create a function which has the following properties: a. It has a horizontal asymptote at y=2 b. It has a discontinuity at x=2 which is not a vertical asymptote c. It has no other discontinuities or asymptotes Explain how your answer satisfies the previous
asked by Cody 
Chemistry
What is the volume of 2.0 kg of isopropyl alcohol at 20 degrees Celsius? Density at 20 degrees is 0.785g/ml. I got .00255 ml when using 3 sig figs.
asked by Kaylee 
Chemistry
What Mass Of Copper(i)oxide Is Formed By Burning 10.5g Of Copper(i)sulfide
asked by Precious 
Physics
A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water at an initial temperature of 20C. After a short time, the temperature of both the metal and water become equal at 25C. The
asked by Jon 
Calc
The figure shows the graph of f(x)=xe^x, x greater than or equal to 0. figure: f(x) curve is drawn and under the max. point/ concave down curve there is an inscribed rectangle. with width from a(left) to b(right) and height up to a certain point of f(x).
asked by Betty 
Physics
A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water at an initial temperature of 20C. After a short time, the temperature of both the metal and water become equal at 25C. The
asked by Anonymous 
Algebra 2
How would you write a polynomial function with rational coefficients so that P(x)=0 has the given roots? The given roots are 2,2,3,5
asked by Jess 
science
A box is pulled across the floor a at constant speed it is pulled horizontal force of 48 N
asked by otis 
Chemistry
At what pressure would 0.150 mole of nitrogen gas at 23.0^o C occupy 8.90 L ?
asked by Boberto 
socialstudies
1. Which is an example of checks and balances? The constitution contains a bill of rights that details the basic rights of the state’s citizens. The constitution clearly outlines voting requirements and the qualifications for holding public office. The
asked by boPy 
Economics
4. Deregulation and the Cost of Trucking. Suppose the government initially limits the number of trucking firms that can haul freight. The market for truck freight is served by a single firm that produces five million tonmiles of service per year, where
asked by Student 
Calculus
An elementary student kicks a ball straight into the air with a velocity of 16 feet/sec. If acceleration due to gravity is 32 ft/sec^2, how many seconds after it leaves his foot will it take the ball to reach its highest point? Assume the position at time
asked by John 
Algebra
How do you find the zeroes of a function and their multiplicities? Y= (x2)^3(2x+5)^2
asked by Anonymous 
phy 231
A car of mass 860.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 39.6 km/hr (11.0 m/s), the net power which the engine supplies is 5700.0 W (in addition to the extra power required to make up for air resistance and
asked by Andrea 
Calculus
The base of a solid is the circle x2 + y2 = 9. Cross sections of the solid perpendicular to the xaxis are semicircles. What is the volume, in cubic units, of the solid?
asked by Belle 
SOC 203 Quiz Help
Question 1. ALL BUT ONE of the following types of violence occurs because of gender inequality, according to Feminist theory: (Points : 1) rape intimate partner abuse sibling abuse x workplace violence Question 2. Which of the following is one of the ABCs
asked by Mike 
Physics
A toboggan approaches a snowy hill moving at 11.1 m/s . The coefficients of static and kinetic friction between the snow and the toboggan are 0.410 and 0.280, respectively, and the hill slopes upward at 42.0 ∘ above the horizontal. A)Find the
asked by Samantha 
Math
You think you need $1.5 million and your retirement advisor thinks you will average 8% a year on your account. How much will you need to contribute a year to your account if you have 40 years to your retirement?
asked by Emilio 
pre cal 11
the sum of the first n terms of an arithmetic series is Sn=2n^2+5n. Determine the first 3 terms. Help!!!
asked by ISOSMEXY 
pre calculus
Sn= 2n^2+5n IS THE SUM OF THE FIRST N TERMS OF AN ARITHMETIC SERIES. determine first 3 terms
asked by ISOSMEXY 
science
Two knights on horseback start from rest 88.0 m apart and ride directly toward each other to do battle. Sir George's acceleration has a magnitude of .300 m/s^2, while Sir Alfred's has a magnitude of .200 m/s^2. Relative to sir Ggeorge's starting point,
asked by a 
physics
Two knights on horseback start from rest 88.0 m apart and ride directly toward each other to do battle. Sir George's acceleration has a magnitude of .300 m/s^2, while Sir Alfred's has a magnitude of .200 m/s^2. Relative to sir Ggeorge's starting point,
asked by Anonymous 
Physics
A shotputter throws the shot ( mass = 7.3 kg) with an initial speed of 14.0 m/s at a 36.0 ∘ angle to the horizontal. Calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.20 m above the ground.
asked by MB 
Math
If you made $3,000 a year in contributions to your retirement account starting at the age of 25, making an average of 8% annual return, how much will you have at the age of 65?
asked by Emilio 
Calculus
Sorry this is really long. Just wondering how I would do each of these A particle is moving with velocity v(t) = t^2 – 9t + 18 with distance, s measured in meters, left or right of zero, and t measured in seconds, with t between 0 and 8 seconds
asked by John 
Algebra
In a right triangle, one angle measures x degrees where sin x degrees= 5/8. What is the value of cos (90 degreesx) ?
asked by Hannah 
Physical science
What is the force of gravity between two 1215 kg cars separated by a distance of 31m on an interstate highway
asked by Anonymous 
trigonometry
I need help solving this problem. Question: At what points will the line y=x intersect the unit circle x2+y2=1?
asked by Mark 
Math
You are currently making $70,000 a year after taxes and are interested in maintaining your current income. If you are expecting $2,500 a month from Social Security, how much will you need to withdraw from your retirement accounts monthly?
asked by Emilio 
Math
You are trying to decide if you have enough money to retire. You are expecting $2,500 a month from Social Security. You have $1.2 million in your retirement savings, and you only want to use the earnings to live on, which is at an 8% annual rate. You are
asked by Emilio 
Chemistry
Create a balanced equation for the reaction between sodium and bromine. Find how many grams of salt can be made from 5.00 grams of sodium and unlimited bromine. Is it about 39.8 g NaBr2?
asked by Anonymous 
Math
The base of a pyramidshaped tank is a square with sides of length 12 feet, and the vertex of the pyramid is 10 feet above the base. The tank is filled to a depth of 4 feet, and water is flowing into the tank at the rate of 2 cubic feet per minute. Find
asked by Betty 
Managerial Finance
Isabelle wants to save up an amount of $150,000 for her son's college education fees, coming up in 5 years. Find the amount that should be invested today if the bank pays an interest rate of 5% compounded annually
asked by Kim 
Chemistry
Hey there! I have these two questions for my chemistry class, and I am a little confused on how I should go about solving them. If someone could give me the steps necessary to solve these problems I would be most appreciative. 1.) pToluenesulfinic acid
asked by Ka_Chin 
Math!
Hi, How would you go about showing that the proposition below is a tautology using algebraic manipulation of logical equivalences (not using a truth table)? ( ( p ∨ q) ∧ ( p → r) ∧ ( q → r) ) → r Thanks!
asked by Kylo Ren 
Physics
In the figure, the two blocks are attached by a massless rope over a frictionless pulley, and block M1 slides on the table without friction. The masses of the blocks are: M1 = 8.10kg and M2 = 3.90kg. Calculate the tension in the rope. ( g = 9.80 m/s2)
asked by Heather 
physics
(a) Two point charges totaling 7.50 µC exert a repulsive force of 0.100 N on one another when separated by 0.561 m. What is the charge on each?
asked by Tim 
precalc11
arctic games held every 2 years. in 1970 it had 700 competitors in 2000 it had 2000. determine the ANNUAL growth rate. Helpppppppp!
asked by ISOSMEXY 
URGENT! Due soon and I used 8 of 10 attempts
Archaeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive isotope 14C present in the object. The amount of isotope decreases in a firstorder process. If 14.5% of the original amount of 14C is present
asked by Kayla