Questions Asked on
June 5, 2013

Please Help!! Math
If c varies directly as the square root of d, and c = 14 when d = 64, find c when d = 324.
asked by Jnr John 
Math  Decimals
Is 0.052 or 0.05 a bigger number?
asked by Jess 
math
A radio station's signal has a radius of 100 miles. If you drive at a constant speed of 40 miles an hour, nonstop, directly across the diameter of the signal, how long can you listen to the station before the signal fades?
asked by dell 
Please Help!! Math
Wind resistance varies jointly as an object's surface area and velocity. If an mile per hour with a surface area of 25 square feet experiences a wind resistance of 225 Newtons, how fast must a car with 40 square feet of the surface area travel in order to
asked by Jnr John 
Physics
Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.835. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 x 108 Ω·m, and that of aluminum to be 2.82 x 108
asked by Tim 
Chemistry
Automobile air bags employ a chemical reaction involving the rapid decomposition of sodium azide (NaN3) into sodium metal and nitrogen gas to inflate in a collision. How much sodium azide is required to decompose to inflate a 20.0 L air bag? Assume that
asked by Anonymous 
physics
A tennis ball is flying horizontally across the net. Air resistance is not negligible. Identify the forces on the ball
asked by Khadija 
HELP!!! Math
If a varies jointly as b and the square root of c, and a = 21 when b = 5 and c = 36, find a when b = 9 and c = 225.
asked by Jnr John 
chemistry
As pure elements. all of the halogens are diatomic molecular species. their melting points are: F2, 85 K, Cl2 239 K, Br2 332 K, and I2 457 K. using periodic table, how can i predict the molecular formula of elemental astatine. at the only radioactive
asked by niki 
HELP!!! Math
The volume of a pyramid varies jointly as its height and the area of its base. A pyramid with a height of 12 feet and a base with area of 23 square feet has a volume of 92 cubic feet. Find the volume of a pyramid with a height of 17 and a base with an area
asked by Jnr John 
Calculus
5. Find the volume of the solid generated by revolving the region bounded by y = x2, y = 0 and x = 1 about (a) the xaxis (b) the yaxis
asked by Maryam 
science
The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?
asked by Quan 
Chemistry
A "neon" sign contains 2.4¡Ñ10^2mL of argon. Assuming that the gas is at standard temperature and pressure, there is 1.00 moles of gas per 22.4 L of volume. How many argon atoms are present in this sign?
asked by Anonymous 
Physics
A block of mass m1=1.6kg, initially moving to the right with a velocity of +4m/s on a frictionless horizontal track, colides with a massless spring attached to a second block of m2=2.1kg moving left with a velocity of 2.5m/s. The spring constant is 600
asked by Andrea 
Chemistry
If iridium has a density of 23.3 g/cm3 and forms a facecentered cubic lattice, what is the atomic radius of the iridium atom? a. 135.7 pm b. 203.7 pm c. 271.4 pm d. 648.0 pm
asked by Anonymous 
probabilities
What is the probability of obtaining tails or a five
asked by Anonymous 
science,
1,3,5,2 ORDER IT
asked by ENYEW 
Math>> Help!!
Seats for Mathematics, Physics and Biology in a school are in the ratio 5:7:8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?
asked by Jnr John 
Math
2 cm green square is painted on a triangle with a base of 6 and a height of 7. A dot will be randomly placed on the triangle. What is the probability the dot will be placed outside of the square?
asked by Bianca 
Chemistry
What is the molecular geometry of PCl3 a. trigonal pyramidal b. seesaw c. tetrahedral d. Tshape
asked by Anonymous 
math
(a)Given the points P(3,5),Q(8,10)and R(8,0),find the equation of a line which is perpendicular to QR and passes through the mid point of QR. (b)The line 2x+3y=2 and 7x3y=10 intersect at A . Find the equation of the line which passes through A and is
asked by JOJO 
Math
12+12=9 25+25=49 18+18=81 29+29=???????
asked by T.Reed 
chemistry
if a 10 mL of the original 1.0M stock solution was added to a 500mL volumetric flask and diluted to the mark, what would be the new concentration?
asked by Anonymous 
Math  Factorising
Find the quotient and the remainder in the following. a). x^4 + 3x^3 + 5x^2  6x  8 is divided by x + 2 b). 2x^4  3x^3 + 6x^2  5x  4 is divided by 2x  3 Please help, this is urgent. Thanks.
asked by OHara 
HELP!!! Math
If y varies jointly as x and z, and y = 33 when x = 9 and z = 12, find y and x = 16 and = 22.
asked by Jnr John 
HELP!!! Math
Given the relation A = {(5,2),(7,4),(9,10),(x,5)}. What is the value of x that will make relation A a function?
asked by Jnr John 
math
Mike,Liz,and Danna are friends.They each measured the length of the sidewalk in front of their school for a project.Which friend do you think measured incorrectly? Mike measured 280 inches Liz measured 24 ft. Danna measured 8 yards
asked by ttuuffyy 
Maths
Hi, I am just doing some maths revision in light of my maths GCSE resit, which is very soon. I am sitting the higher paper for the first time, so some of the questions towards the end of the paper are very testing of my knowledge. At the moment I am going
asked by Sam 
Math
solve and find value of A,B,C and D. 4 + C = 5 + A*D C = 3 + 3*D 7  C = 6 + B*D
asked by Ying 
math
Barbara Sultan works 40 hours per week as a registered nurse. At the rate of $31.50 per hour, what are her gross weekly earnings
asked by Beth 
Math Polynominal
The following three sets A,B and C satisfy A ⊂ B and C ⊂ A: A={x∣(x−3)(x^2−20x+75)>0}, B={x∣x>α}, C={x∣x>β}. If the maximum value of α is a and the minimum value of β is b, what is the value of a+b?
asked by Crow 
Chemistry  DrBob222
When sodium burns in air it produces a bright white light and heat energy 2Na + O2 2Na2O ?H = 414kJ/mol What would you expect to be the heat energy associated with the reverse process 2Na2O 2Na + O2 Can you please show the entire calculation with units
asked by Timofey 
Math
A spinner with three equal spaces (labeled A,B, and C) is spun. If the spinner lands on A or C a coin is flipped. If the spinner lands on B a standard 6sided dice is rolled. What is the probability of spinning a B and rolling a prime?
asked by Jennyy 
math
If RS=8y+4, ST=4y+8, and RT=36, find the value of y.
asked by Chris 
fundamentals
A playground has its highest point 2.2m above the lowest point, and the slide is 4.9m long. If the average resistance to motion is onefifth of the weight of the child(mass 40kg), find the speed at which the child reaches the bottom show working?
asked by David 
Physics
1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to
asked by DANNY 
Calculus
Use Green's theorem to evaluate the integral: y^(2)dx+xy dy where C is the boundary of the region lying between the graphs of y=0, y=sqrt(x), and x=9
asked by Elyse 
fundamentals
Calculate the total constant force needed to accelerate a vehicle with mass 1400kg and tractive resistance of 320N from 19km/h to 95km/h over a distance of 0.8km on a horizontal plane.show working?
asked by David 
Algebra
A $130,000 home bought with a 20% down payment and the balance financed for 30 years at 7.5% Find the monthly payment for the loan
asked by Becky 
College Algebra
When using the Quadratic formula, why is only necessary to examine the discrimant to determine if the equation only has real numbers?
asked by Jennifer 
language arts
compare and contrast the giver and the truman show
asked by sue 
english
Hey you :) Can you please read that letter to my host family? Can you maybe give me tips what I can add? what I don't have to say? And look up the grammar? Thank you Minnie Dear Host Family, My name is Minnie. I’m 21 years old, my birthday is on 2nd
asked by Minnie 
College Algebra
Suppose that the Quadratic equation had two Xintercepts. How could you use the intercepts to find the vertex?
asked by Jennifer 
PreCalculus
How to write this conic section in standard form? 3y^2 = 108  12x^2
asked by B 
PreCalculus
How to write this conic section in standard form? 3y^2 = 108  12x^2
asked by B 
Physics
A 1.40 block is on a frictionless, 20 inclined plane. The block is attached to a spring ( = 40.0 ) that is fixed to a wall at the bottom of the incline. A light string attached to the block runs over a frictionless pulley to a 60.0 suspended mass. The
asked by Anonymous 
physics
A car moving with a velocity of 24meters per seconds,acceleration for 15seconds at a rate of 1meter per second square,calculate the final velocity of the car
asked by Henry 
Math
Determine 208/207+(208/207×206/205)+(208/207×206/205×204/203)+..+(208/207×206/205×204/203..4/3*2/1)
asked by Clavin 
PLIZ VERY URGENT
Use implicit differentiation to show that a function defined implicitly by sin x + cos y = 2y has a critical point whenever cos x = 0. Then use the first derivative test to classify those critical numbers that lies in the interval (−2, 2) as relative
asked by Anonymous 
Physics
A winch is capable of hauling a ton of bricks vertically two stories (6.50 ) in 22.5 If the winch’s motor is rated at 5.00 , determine its efficiency during raising the load.
asked by Anonymous 
physics
A solid sphere of mass 2 kg is rolling without slipping on a table with linear speed of 0.5 m/s. Calculate its total kinetic energy.
asked by Anonymous 
Math
A rectangle has a length that is 1 less than twice its width. It's area is 21. Find its perimeter.
asked by Bentley 
Geometry
To the nearest inch, what is the diameter of a minipizza if two minis have the same area as one 16inch pizza?
asked by Anonymous 
chemistry
Whadetermines the behavior of an amphoteric compound?
asked by noya 
PHI 208
Many philosophers insist that our most strongly held beliefs should be examined and critically evaluated. Using the required text and outside sources, explain what philosophers mean when they say that beliefs need justification? What is the importance of
asked by lisa 
Math
The ratio of the length of an altitude of an equilateral triangle to its base is A. 1:1 B. 1:2 C. 1:3 D. Square root of 3: Square root of 2 E. None of these
asked by Anonymous 
Physics
A block of weight 30N lies on a horizontal table top. A force of 40N acts parallel to the surface of the table top, but does not cause the block to move. What is the magnitude of the frictional force between the block and the table?
asked by Ashley 
Precalculus
Given f(x)=6x^47x^323x^2+14x+3, approximate each real zero as a decimal to the nearest tenth.
asked by Jen 
ELA
I have an 89, 83, 82, and 74 for school year. I got a 59 on final which is worth 20%. what is my average?
asked by brendan 
Precalculus
Given f(x)=(2x+3)/(3x^2+7x6) find the equations of any vertical, horizontal, or oblique asymptotes.
asked by Jay 
Science
Solar panels turn ___ energy into __ energy heat into electric?
asked by Jerald 
Math
The area of a yard is 15000. If the ratio of the length to the width to the depth is 4:2:1, what are the dimensions of the pool?
asked by Seth 
Math
A 20 foot ladder is leaning against a building. If the ratio of the base of the ladder's distance from the building to its top's height from the ground id 3:4, find how high the top of the ladder is from the ground.
asked by Seth 
statistics
Suppose that 30% of all telephone calls at work are for personal reasons. If a random sample of 15 is taken, let X be the number of personal calls. The standard deviation of the # of personal calls is:
asked by Anonymous 
Math
The area of a trapezium is 360 in2. If the ratio of the bases to the height is 6:10:5, find the dimensions of the trapezium.
asked by Seth 
Math
Given three vertices (3,5), (0,0), and (6,0). Which of the following could be the fourth? A (3,5) B (9,5) C (3,5) D (3,5)
asked by Anonymous 
Engineering
A tapered thinwall circular shaft has constant wall thickness, t, length L, and diameters linearly varying between dA at the support A(x=0) and dB at its free end B(x=L). The shaft is homogeneous with shear modulus G HW6_1A : 20.0 POINTS Obtain a symbolic
asked by Sat 
Business
If a family planned to spend $370 for food during March but only spent $344, this difference would be referred to as a:
asked by Henry 
Math
Mr foster places 11 garden lights along an 80 meter path. Each light is placed an equal distance apart. How far away is the sixth garden light from the second?
asked by Karen 
math
Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.33 10−5watts/cm2
asked by tekeria 
chemistry
briefly explain the problem that will be created if you (a) mark the origin line with a washable flettip markromatogram until after you discover that the solvent front has reached the top of the paper.
asked by mary 
accounting
On November 30, the payroll register of Webster & Smith indicated the following information: Determine the amount of Social Security and Medicare taxes to be withheld. Round your answers to one decimal place. Social Security Tax=$ Medicare Tax=$136,30 I
asked by Trish 
Biology
Describe how you would prepare 10 mL each of 2 M, 1.5 M, and 1 M NaCl solutions from a 2 M stock NaCl solution. Describe your actions–exactly what you would do –stepbystep–when preparing this solution. Also show all calculations. Be sure all
asked by Maria 
Math
Factorise : 1 + a + b + c + ab + bc + ca + abc
asked by Roy 
CHEMISTRY PLEASE HELP
Cobalt was used as an internal standard to analyze a sample of titanium with atomic absorption spectroscopy. A mixture was prepared by combining a 4.00 mL Ti solution of unknown concentration with 3.00 mL of a 11.7 micrograms/mL solution of Co. The atomic
asked by ScienceGeek 
math
For a positive integer x, let f(x) be the function which returns the number of distinct positive factors of x. If p is a prime number, what is the minimum possible value of f(75p2)?
asked by raja harishchandra 
Maths  factorising
Find the quotient and remainder in the following: a) x^4 +3x^3 + 5x^2  6x  8 is divided by x + 2
asked by OHara 
calculus
What is the antiderivative of. 3X/x^2?
asked by Mary 
math
How many ordered pairs of positive integers 1≤k≤n≤50 are there, such that k divides n, and (n/k)!=n!/k!?
asked by raja harishchandra 
math
Find the sum of all positive integers m such that 2^m can be expressed as sums of four factorials (of positive integers).
asked by raja harishchandra 
HELP!!! Math
The area of a yard is 15000 ft^2. If the ratio of the lenght to the width of the yard is 3:2, what are the dimensions of the yard?
asked by Jnr John 
math
The integers from 1 through 10 (inclusive) are divided into three groups, each containing at least one number. These groups satisfy the additional property that if x is in a group and 2x≤10, then 2x is in the same group. How many different ways are there
asked by raja harishchandra 
Please Help!! Math
The volume of a pool is 1728 ft^3. If the ratio of the lenght to the width to the depth is 4:2:1, What are the dimensions of the pool?
asked by Jnr John 
math
The integers from 1 through 10 (inclusive) are divided into three groups, each containing at least one number. These groups satisfy the additional property that if x is in a group and 2x≤10, then 2x is in the same group. How many different ways are there
asked by raja harishchandra 
Math>> Help!!
A 20 foot ladder is leaning against a building.If the ratio of the base of the ladder's distance from the building to its top's height from the ground is 3:4, find how high the top of the ladder is from the ground.
asked by Jnr John 
math
Express (15x^2+5x+2)/(2x)(1+2x^2) in partial fractions.
asked by Regina 
HELP!!! Math
The area of a trapezium is 360 in^2. If the ratio of the bases to the height is 6:10:5, find the dimensions of the tarpezium.
asked by Jnr John 
math
Express (15x^2+5x+2)/(2x)(1+2x^2) in partial fractions.
asked by Regina 
math
Express (15x^2+5x+2)/(2x)(1+2x^2) in partial fractions.
asked by Regina 
Math>> Help!!
If y varies as x, and x = 9 when y = 15, find y when x = 33.
asked by Jnr John 
math
Express (15x^2+5x+2)/(2x)(1+2x^2) in partial fractions.
asked by Regina 
math
Express (15x^2+5x+2)/(2x)(1+2x^2) in partial fractions.
asked by Regina 
HELP!!! Math
The weight of an object on Earth varies directly as the weight of the same object on the moon. A 300 pound object would weight 48 pound on the moon. How muchg would a 65 pound object weigh on the moon?
asked by Jnr John 
math
Express (15x^2+5x+2)/(2x)(1+2x^2) in partial fractions.
asked by Regina 
economics
how managerial economics is related with economics?
asked by namrata 
physics
consider the 52 kg climber. find the tension in the rope and the force that the climber must exert with her feet on the vertical rock face to remain stationary. assume that the force is exerted parallel to her legs. also, assume negligible force exerted by
asked by kim 
heeeeeeeeeeeelp physics
Estimate the time difference between the longest day and the shortest day of a year in seconds if you lived on the Earth's equator with the assumptions below. Note: this is not the difference between solstices as we are adjusting the earth's rotation axis
asked by clavin 
maths
Find the smallest number N such that: The number of divisors of N is A. The number of divisors of A is B. The number of divisors of B is C. The number of divisors of C is 3.
asked by rohit 
maths
Determine 208/207+208/207×206/205+208/207×206/205×204/203+…
asked by rohit 
algebra
For a positive integer x, let f(x) be the function which returns the number of distinct positive factors of x. If p is a prime number, what is the minimum possible value of f(75p2)?
asked by arjit 
algebra
For how many pairs of positive integers n and k with n and k less than or equal to 20, is the number (2n)!(2k)!n!k!(n+k)! an integer?
asked by arjit 
calculus 2
Test the series for convergence/divergence. The Summation from n=1 to infinity of: 1*3*5...(2n1)/(2*5*8...(3n1) I'm not sure what to do with the extra terms on the left.
asked by Jane 
Geometry
Triangle ABC has side lengths AB=8, BC=12 and CA=14. Given that D, E and F are midpoints of BC, CA and AB, respectively. Find the value of AD^2+BE^2+CF^2.
asked by Shin 
help math!
A curve has equation: 3siny + 4cosy = xy + x^2 Q:find dy/dx in terms of x and y.
asked by Ying 
Math>> Help!!
A sum of money is to be distributed amoung A,B,C,D in the proportion of 5:2:4:3. If C gets K1000 more than D, waht is B's share?
asked by Jnr John 
Calculus
(c) find the integral of e^x/ e^3x + e^x dx
asked by Maryam 
Calculus
(c) find the integral of 1/squrt (x^2+2x+10) dx
asked by Maryam 
Calculus
Find the integral of sin(x) cos(x)/sin^2(x)4 dx
asked by Maryam 
Chemistry
Name each compound. /\/\NH2 (that's suppose to be a line diagram...) I got 1pentanamine, but that's wrong. CH3CH2OCHCH2CH3 ..................... ..................CH3 I'm not sure how great this will turn out, but there's supposed to be a CH3 branching
asked by a Canadian 
Physics
All answers should be in degrees. (a) Using the result of Lecture 31 Question 3, and Snell's law, derive and evaluate for the secondary rainbow for the following values of the incidence angle and index of refraction . 1 , 1.4 incorrect 45 , 1.3 incorrect
asked by P 
Calculus
(c) y=x2,y=2−x,and the vertical linex=2
asked by Maryam 
Calculus
3. Find the volume of the solid with crosssectional area A(x) = 10 e^0.01x, 0 ≤ x ≤ 10.
asked by Maryam 
Calculus
4. Find the volume of a pyramid of height 160 feet that has a square base of side 300 feet
asked by Maryam 
English
Which of the following APA citations for a book with one author is correct? A. Percy, William Byrnes (1961). The Moviegoer. New York: Knopf. B. Percy, W. (1961). The Moviegoer. New York: Knopf. C. Percy, W., 1961. The Moviegoer. New York: Knopf. D. Percy,
asked by Amy 
Thermodynamics
An empty cannister of 0.002 m3 is filled with R134a from a line flowing saturated liquid R134a at 0°C. The filling is done quickly so it is adiabatic, but after a while in storage, the can warms up to room temperature, 20degC. Find the final mass in the
asked by Kyle 
Biology
What are the three main type of producers?
asked by Anonymous 
English
To “elide” text is to ___________ text. A. plagiarize B. misspell C. omit D. verify is it C
asked by Amy 
life orientation
Identify one enviromental or human factor that causes ill health or accidents within your community
asked by kim 
Math
John ran 600 meters at baseball practice.How many centimeters did he run?
asked by ttuuffyy 
estimate with whole nubers
Susie has a parttime job at the video store. She makes between $40.00 and $47.00 a day. Which is a reasonable amount of money that Susie makes for working 6 days?
asked by Anonymous 
Movie Essay Topic Help?
Hi, I need to write a essay/narrative/anyotherstyleofessay for the movie "Lean on Me" with Morgan Freeman. I was wondering, if any of you guys have seen it, what would be a good topic to write about? Thanks
asked by Michael 
Math
Which of the following holds about 1 liter of water spoon,glass ,pot, or eye dropper?
asked by ttuuffyy 
heeeeeeeeeeelp math
The integers from 1 through 10 (inclusive) are divided into three groups, each containing at least one number. These groups satisfy the additional property that if x is in a group and 2x≤10, then 2x is in the same group. How many different ways are there
asked by clavin 
heeeeeeeeeeelp math
Calvin and Dan are playing a game of chance. Calvin tosses 8 fair coins, and wins if he obtains at least 4 heads. The probability that Calvin wins can be expressed as a/b where a,b are coprime positive integers. What is the value of a+b?
asked by clavin 
math
Which is the best estimate for the length of a house? A.12 yards B.12 feet C. 12 miles D.12 inches
asked by ttuuffyy 
plllllllllls help math
ABCD is a convex quadrilateral with AC and BD intersecting at E. F is a point on AD such that EF is parallel to CD. It is given that the circumcircle of triangle AED is tangential to DC. If FD=336 and FA=420, what is ED?
asked by clavin 
math
The ratio of girls to boys in a class is 2:3, and you know there are 6 girls, how many boys are in the class?
asked by mary 
math pls hurry
A car travels 60 km in 1hr 30min.how long will it take to cover a distance of 100km at the same speed?
asked by vaibhav 
Math
If the total expenditure was 2.5 million euros determine: 1) cost of administration (which is 20%): i did 20x2.5 million divided by 100 2) by how much thr expenditure on production (30%) exceeded that of selling (25%)
asked by Katherine :)) 
heeeelp math
For each positive integer n, let Hn=1/1 + 1/2 +⋯+ 1/n . If ∑ (up)∞ (base)(n=4) 1/n*Hn*H(n1)= a/b for relatively prime positive integers a and b, find a+b.
asked by clavin 
Chemistry
The ratio of isotopes for a given element can be measured instrumentally using a(n) ____________________.
asked by Anonymous 
Chemistry
How many liters of nitric acid are needed to neutralize 25mL of 4.2M calcium hydroxide?
asked by Anonymous 
Precalculus
Explain how the graph of f(x)=(2)/(x3)^2 can be obtained from the graph of y=1/x^2 by means of translations, compressions, expansions, or reflections.
asked by Gina 
Grammar
I want to give my Algebra teacher a letter to show how much her effort on helping me learn made me appreciate her and I just want to know if this sounds okay. Dear (my teacher's name), I just wanted to take some time to express how much I enjoyed being in
asked by Angie 
math
how much water is needed to add to a halfpint of syrup with 60% sugar to obtain a drink with 5% sugar?
asked by Deidre 
chattco
Dave's age in 4 years is 18. Write an equation that represents Dave's age in 4 years. Use the variable, d, to represent Dave's age
asked by ian 
Chemistry
A "neon" sign contains 2.4¡Ñ10^2mL of argon. Assuming that the gas is at standard temperature and pressure, there is 1.00 moles of gas per 22.4 L of volume. How many argon atoms are present in this sign? a. 6.5¡Ñ1021 b. 2.8¡Ñ1022 c. 3.2¡Ñ1024 d.
asked by Anonymous 
Math Trigonometry
Let f(x)=cos(pi*x/3) g(x)=1^x+(−1)^x h(x)=f(x)⋅g(x) where x is a positive integer. Given that h(x) has a range of exactly 3 different values: a, b and c, what is the value of a^2+b^2+c^2?
asked by Crow 
Math Trigonometry
What is the maximum integer value of n, where n
asked by Crow 
Chemistry
Limestone (CaCO3) emits CO2 gas when exposed to HCl. What is the theoretical yield of CO2 if 56.1 grams of limestone is completely dissolved in HCl? CaCO3(s) + 2 HCl(aq) R CaCl2(aq) + CO2(g) + H2O(l) a. 21.5 g b. 4.16 g c. 9.53 g d. 24.7 g
asked by Anonymous 
Chemistry
As an electron moves closer to the nucleus, energy is: a. absorbed b. released c. remains unchanged d. transformed into a proton
asked by Anonymous 
Chemistry
Which of the following electron configurations belongs to an atom that is most likely to be involved in a covalent bond? a. 1s22s22p63s2 b. 1s22s22p6 c. 1s22s22p63s23p3 d. 1s22s22p63s23p6
asked by Anonymous 
Chemistry
Large jumps in ionization energy tend to occur whenever the removal of that electron disrupts an electron configuration ending in: a. ns2 b. ns1 c. np6 d. np4
asked by Anonymous 
Chemistry
The lower the pH of a weak acid, the: a. higher the concentration of the weak acid. b. higher the dissolved H2(g) concentration. c. higher the Ka of the acid. d. none of the above
asked by Anonymous 
Chemistry
What is the pH of a 0.200 M solution of HNO3? a. 0.70 b. 1.31 c. 6.18 d. 8.53
asked by Anonymous 
Chemistry
How long will it take to collect 1.0 L of H2(g) at STP in the electrolysis of 2.0 M HCl with a current of 4.25 A? a. 15 min b. 34 min c. 2.8 hr d. 11 hr
asked by Anonymous 
Chemistry
A "neon" sign contains 2.4¡Ñ102mL of argon. Assuming that the gas is at standard temperature and pressure, there is 1.00 moles of gas per 22.4 L of volume. How many argon atoms are present in this sign? a. 6.5¡Ñ10^21 b. 2.8¡Ñ10^22 c. 3.2¡Ñ10^24 d.
asked by Anonymous 
Chemistry
The ratio of isotopes for a given element can be measured instrumentally using a(n) ____________________.
asked by Anonymous 
Chemistry
Which of the following electron configurations belongs to an atom that is most likely to be involved in a covalent bond? a. 1s^22s^22p^63s^2 b. 1s^22s^22p^6 c. 1s^22s^22p^63s^23p^3 d. 1s^22s^22p^63s^23p^6
asked by Anonymous 
Chemistry
Large jumps in ionization energy tend to occur whenever the removal of that electron disrupts an electron configuration ending in: a. ns^2 b. ns^1 c. np^6 d. np^4
asked by Anonymous 
Chemistry
A "neon" sign contains 2.4¡Ñ10^2 mL of argon. Assuming that the gas is at standard temperature and pressure, there is 1.00 moles of gas per 22.4 L of volume. How many argon atoms are present in this sign? (a). 6.5¡Ñ10^21 (b). 2.8¡Ñ10^22 (c).
asked by Anonymous 
Approapriate logos
For my school field day, I have to wear a white shirt and it can have logos or pictures. My shirt has the words "God save england" is that approapriate?
asked by Celest 
Reading Activity
1. The old couch needed some new upholstery. What does the word upholstery mean in the sentence above? (1 point) fabric curtains pillows*** legs 2. The pet owner had many feline companions. What does the word feline mean in the sentence above? (1 point)
asked by Gabby 
Physics/Mechanics
tapered thinwall circular shaft has constant wall thickness, t, length L, and diameters linearly varying between dA at the support A(x=0) and dB at its free end B(x=L). The shaft is homogeneous with shear modulus G HW6_1A : 20.0 POINTS Obtain a symbolic
asked by MAN 
Science
7) An apple falls from a tree (h = 9m). In the absence of air resistance, how fast is it traveling when it strikes the ground?
asked by Mark 
wilson
Andrea is as talented as any person I know.
asked by Anonymous 
Physics
7) An apple falls from a tree (h = 9m). In the absence of air resistance, how fast is it traveling when it strikes the ground?
asked by Mark 
math
If you begin with 3000 fish in a pond and 20% die off each year, yet 1000 more are added each year, how many would you end up with at the end of 10 years?
asked by Susan 
BUSINESS
The sales department tells management that they can increase revenue by 20 percent by increasing sales 20 percent, but the production department says that to achieve that number of units, they will have to buy a new piece of equipment that will add
asked by LUCY 
math
A whole number which will divide exactly into another whole number.
asked by kina 
Math
can any one add or subtact this (m^2  m  4) + (m  5)
asked by William 
math
Two runners are competing in a race. One runner averages a pace of 7 minutes per mile and finishes the race in 28 minutes. The second runner finishes the race in 30 minutes. Which of the following is the pace of the second runner?
asked by lifesaver2 
math
Find the sum of all positive integers m such that 2^m can be expressed as sums of four factorials (of positive integers). Details and assumptions The number n!, read as n factorial, is equal to the product of all positive integers less than or equal to n.
asked by anonymous 
Chemistry
When sodium burns in air it produces a bright white light and heat energy 2Na + O2 2Na2O ?H = 414kJ/mol What would you expect to be the heat energy associated with the reverse process 2Na2O 2Na + O2 Can you please show the entire calculation with units
asked by Timofey 
Math
A spinner with three equal spaces (labeled A,B, and C) is spun. If the spinner lands on A or C a coin is flipped. If the spinner lands on B a standard 6sided dice is rolled. What is the probability of spinning a B and rolling a prime?
asked by Jennyy 
english
What grammatical structure is the italicized portion of the sentence? By serving as a popcorn vendor, Don saw many good games. present participial phrase nominative absolute appositive past participial phrase prepositional phrase with a gerund
asked by Chris 
BT
What's the shortcut of sane in stenography?
asked by Brit 
Physics
1. A car is traveling at 85km/h, find the following: A) Its speed in m/s u = 85km/h = 85km/h * 1000m/km/ 60s/min * 60min/m/h = 85000/ 3600 = 23.61 ANS = 23.61m/s B) How many meters will it travel in 8 seconds = 23.61m/s * 8s ANS = 188.88m C) How long (in
asked by DANNY 
Foreign Language Translation French
Le garcon n'a pas de stylo does this mean "the boy does not have a pen?"
asked by Anonymous 
calculus
A conical party hat made out of cardboard has a radius of 4cm and a height of 12cm. When filled with beer, it leaks at the rate of 4cm^3/min. (a)At what rate is the level of the beer failing when the beer is 6cm deep? (b) When is the hat half empty?
asked by kristina 
math
Mitch Anderson is a security guard. He earns $7.45 per hour for regular time up to 40 hours, timeandahalf for overtime, and double time for the midnight shift. If Mitch worked 56 hours last week, including 4 hours on the midnight shift, how much were
asked by Beth