Posts by paul
Total # Posts: 979

chemistry
how do you convert volume of gas to moles of solid? 
chemistry
Standard temp and pressure 
chemistry
0.43g limestone and 98cm3 of carbon dioxide are produced on reaction with excess hydrochloric acid. How much calcium carbonate is present? 
Maths
Plot the three points with first coordinate equal to (2,8) and join them 
chemistry
what is the condensed formula for the product of the hydrogenation of 2butene using a palladium catalyst? 
chemistry
What reagent is commonly used for alcohol oxidation? a. Na2Cr2O7 b.Benedict's Solution c.H2SO4 d. Tollen's Reagent 
IT
What is the best HTML attribute in the world? 
Math
I need help with the steps on how to do this following problem: Bert received a commission of $247.50. If he works for 15% commission what price of the cat did he sell? 
maths
iam a 3 digit number. my tens digit is five more than my ones digit. my hundreds digit is eight less than my tens. what number am i? 
physics
a ray of light strikes a rough surface such that the angle of incidence is 40.0. what is the angle of reflection 1. 0 degrees 2. 20.0 degrees 3. 40.0 degrees 4. the angle of reflection cannot be determined. I am confused between 3 and 4 but I think the correct answer is 40.0 ... 
physics
Thanks 
physics
microwaves with a wavelength of 15.0 cm strike a slit. What is the maximum slit width that will still result in a large amount of diffraction? 1. 7.50 cm 2. 10.0 cm 3. 15.0 cm 4. 30.0 cm This is a multiple choice and I think it's 7.50 cm. Could someone please confirm 
physics
With your way, the answer is 50000 V but that is not the correct answer. 
Chemistry
What is the volume of oxygen required at standard temperature pressure to complete the combustion of ethanol of 2.3 grams of ethanol 
BC Calculus
Fluid is flowing in a tube that has a radius of 3 centimeters. Water is flowing through a circular cross section at a rate of (9r^2) cm/s, where r is the distance from the center of the cross section. What is the total amount of water that flows through the cross section in 4... 
Physics
98 J 8.0 x 9.8 x 1.25 
science
A body is dropped the roof of a building 10 mtr high calculate the time and speed g =10 m/s 
Calculus
What how do you compute the sum of 1/2 + 1/4 + 1/8 + 1/16 + 1/32 +++ 1/2N ? .. 
Calculus
What how do you compute the sum of 1/2 + 1/4 + 1/8 + 1/16 + 1/32 +++ 1/2N ? 
Math
What is the square root 5900 
Math
Insert grouping symbols to make 6+4x0=6 
History
Is there something peculiar about Africa that delayed its drive for independence? (Begin with a specific African country, and argue your case.) 
scence
which one of the following insects does not undergo the stage of egg,larva,pupa and adult? A.Wasp B. Locust C. Bee D. Moth 
math c
A farmer planted cabbages in rows. Each row had 36 cabbages planted at regular intervals of 0.5m.what is the length of each row? 
math
how many books each 1.5cm thick can be kept in a shelf 1.45m high 
english grammar
2 is A 3 is B 
english grammar
1. Our high school would not ________until mid September midseptember midSeptember . a. reopen b. reopen c. re open I think the answer is B 2. We were enjoying our break by indulging in ______activities a. childlike b. childlike c. child like I think the answer is C 3. and... 
english
Thankyou 
english just need someone to check my answer
On second thought the 2nd question should be demagogue 
english
Because he was bourgeois coddled despotic _______ as a child, Rob was a rather selfcentered teenager. dubious coddled despotic bourgeois 2.After hearing the raucous, cheering response to Adamâ€™s speech, Mr. James feared that his new student body president ... 
english
Irony is supposed to be the opposite meaning, right or sarcasm. Is it A, because they were privileged to watch? 
english
Which phrase or sentence in this excerpt from Kurt Vonnegut's "Report on the Barnhouse Effect" demonstrates the use of irony? One long bench had been brought in for the ten of us privileged to watch. The television screens showed, from left to right, the stretch ... 
english
Thank you Reed. I was out of school the last day before spring break for a track meet. We are not allowed to take our school books home. I have my assignments, just trying to make sure I am not behind. 
Physics
A stepup transformer has 500 turns on its primary and 1000 turns on its secondary. When the primary is connected to 100 V and the secondary is connected to a floodlight that draws 4 A, what is the power output? 
math
mark is making gift bags for his friends. there are stickers in 1/4 of the gift bags. If mark makes 12 gift bags. how many wil contain stickers? 1/4x12=3 is this correct 
Math
831.Let A = (1,3), B = (6,0), and C = (9,9). Find the size of angle BAC. 
Math
The graph of x2 ?6x+9+y2 +2y+1 = 25 is a circle. Where is the center of the circle? What is the radius of the circle? 
math
Drawn in a circle whose radius is 14 cm, chord AB is 18 cm long. Calculate the angular size of minor arc AB. 
math
a football match was played for two hours. a man arrives late for the match. what is the probability that he misses the only goal of the match which is scored at 30th minute of the match? 
Engineering Science N4
A box of books has a mass of 46kg and is being towed by a rope which is oriented at 15 degree to the horizontal at a point where it is tied into a knot. If the pulling force is increased until the box begins to slide, determine the box's initial acceleration if the ... 
maths
How much money will you have if you started with $45 and put it in an account that earned 10% every year for 20 years? 
physics
A man holds a child on shoulders while watching a football match. How much work has he done if the game last for 2 hours 
Math
, Two digit whole number between 30 and 80 my tens digit is one more than my ones digit I am a prime number what am I 
Language Arts
i think she is a little loco 
Math
John wants to make brownies. To make brownies he needs 2/5 of a cup of flour per batch of brownies.if John has 2 cups of flour, then how many batches of brownies can John make? 
physics (urgent)
A flywheel with a moment of inertia of 1.00kg m^2 is rotating at 100 rpm. What torque is required to bring it to rest in 10.0 revolutions? 
math (Help)
Determine whether the equation defines y as a linear function of x. If so, write it in the form y = mx + b. 6x+√y7=0 a. y=6x7 b. y=6x+7 c. y=6x d. y is not a linear function of x 
Physics
A 70 kg waterslide rider traveling at 15 meters per second hits a ramp with a 58 degree launch angle  How high will they fly? 
Algebra
The bongo family has three children, including a pair of twins. The third child is 3 years younger than the twins. The sum of the three ages is 42. How old is each? 
calculus
a ladder 10m long is leaning against a vertical wall with its other end on the ground. the top end of the ladder is sliding down the wall , when the top end is 6m from the ground it is sliding down at 2m/sec. how fast is the bottom moving away from the wall at this instant? 
Physics
its b 
Physics (Momentum and collusion)
Two balls of equal mass undergo a collision. Ball one is initially travelling horizontally with a speed of 10 m/s, ball two is initially at rest. After the collision, ball one moves away with a velocity of 4.7 m/s at an angle of 60 degrees from it's original path and ball ... 
stat
A college basketball player scored the following points in the 37 games he played his senior year: Stemandleaf of points n = 37 Leaf Unit = 1.0 133 166 21233444 25555666789 30222233444 389 423 47 52 The first quartile of his point totals is ____________ points 
math
Onehalf of a number plus threefourths of the number is 2 more than fourthirds of the number. find the number . 
Math
How far will a 4ft diameter wheel travel while making 100 revolution? 
Math
95 is the product of vidya's savings and 5 
Physics
“A rifle shot with a velocity of 270m/s at a target that is 400m away.if the shooter wants to directly hit target and what angle he must gire 
regents
The issue is that i am moving to the U.S , but thanks anyways. 
regents
I have to take the Regents exam, but there are a great number of math regents exams. If I am in 11th grade,which one should I take??plz help , this is urgent! !😣 
Math
I am asked to graph a translated parabola,ok, that's pretty easy, but, then,it says that it must be dobe with a dilatation of 2, does that mean that my axis is going to be this way:2,4,6,8,10...?? 
chemistry
I was given the following problem: what is the normality of a solution containing 6 grams of H2SO4 in a 200ml solution? my teacher obtained a normality of 39normals while I took into account that I had two hydrogen free and obtained a result of 0.6 N, who's right? 
Math
Find two consecutive odd integers whose product is 323. Would the two numbers be 17,19 and 17,19??? 
Math
Would the answer be 2.04? 
Math
A baseball is thrown upward. The path of the baseball models the equation h= 4.9t^2 + 9.2t + 1.6, where h is height of the ball, in metres, after t seconds. How long does it take the baseball to fall to the ground? Plzzz help 
math
50 people purchase raffle tickets 3 winning tickets are selected at random if the first prize is $1,000, second prize is $500, and third prize is $100 in how many different ways can the prizes be awarded and is this a permutations or a combinations problem? 
Mathematics
The terms of the geometric series may be: a , ab , ab^2 . The 2. , 3. , 6. term of the arithmetic series may be: c , c+d , c+4d i.e. a = c , ab = c+d , ab^2 = c+4d ==> ab = a+d ==> d = aba ==> ab^2 = a+4(aba) = 4ab3a ==> b^2 = 4b3 ==> b^24b+3 = 0 ==> (b... 
math 5th grade
The width of a picnic table is 3 times its length. If the length is 5 6 yd long, what is the area of the picnic table in square feet? sides are 2 1/2 yd and 5/6 yard. then to find area 2 1/2 x 5/6 = 2 5/12 y2 how do I find square feet? 
english
1. Reich says, “When we see the contrast between the values we share and the realities we live in, that is the fundamental foundation for social change.” What do you think about that statement? How would you describe the disconnect between American values and the ... 
math
i don't know where to start 
math
A ladder is placed against a wall with an angle between the ladder and the ground of 76°. If the ladder must reach 10 m up the wall, how long does the ladder need to be? 
Math
The perimeter of a rectangular field is surrounded by 94 meters of fencing. If the field is partitioned into two parts as shown, a total of 113 meters of fencing is required. Find the dimensions of the field. 
Visual Basic
how to use formula b=p (1+r)^n, to calculate annual interests for a savings account in visual basic project This is my code so far>>>>>>>>>>>>>> Option Explicit On Option Strict On Option Infer Off Public Class MainForm Private ... 
physics
162cos60 and 162sin60 81N and 140.3N 
series
Partial sum = 1/2{3/22N+3/(N+1)(N+2)} 
Calc/Physics
Find the following questions at the depth of 25\text{m}. The gravitational acceleration is g = 9.8\text{m/s}^2 and the density of water is \rho = 1000\text{kg/m}^3. a. Find the hydrostatic force on a square steel plate with sides 2\text{m} placed horizontally. Answer (in ... 
Math
On a map, two cities are four and onefourth inches apart. The scale of the map is onehalf inch = three miles. What is the actual distance between the towns? 
Chemistry lab
1)Why is it necessary to heat the alum until its mass does not change by more than 2mg? 2)Why its it necessary to store the alum in a disccator while it cools before measuring the mass? ( systhesis and analysis of alum crystals experiment) 
nutrition,health, and safety for young children
a 
Science
A flatt horizontal road is been designed for 60km/hr speed limit if the maximun acceleration of the car travelling on the road is to be 15m/s at the above speed limit.what is the minimun radius of the curvature of the curve on the road 
Machine
Jack & Jill went to a well to fetch a bucket of water. The full bucket was 500N. Jack weighed 50kg and Jill weighed 40kg. How would you get bucket from the well 
Math
x=natural gas it dropped by 2cent then increased by 25cents then dropped 43cents...how do I set up this equation? 
Math
400 exercise books are arranged into 3 piles.The first has 5 more books than the 2nd pile.The number of books in the second pile is twice the number of books in the third pile.How many books are there in the third pile?? 
PrimaryMatheMatics 4A textbook
3000 Exercise books are arranged into 3 piles.The first pile has 10 more books than the second pile.The Number of books in the second pile is twice the number of books in the third pile.How Many books are there in the third pile? 
Introduction to computers
Which type of updates should be installed in a test environment before being installed in a live enterprise environment? 
math/phys
someone tell me why this answer is wrong...u are given final wavelength of 0.0022 nm, u want to solve for the intial wavelength using the compton scattering equation which is final wl intial wl= 0.002426(1cos(theta)) theta is 45 degrees. so initial w.l. = 0.002426(1cos45)+0... 
chemistry please help me understand this
What is the charge on Pd when it is coordinated with triphenylphosphine? PPh3. Pd(PPh3)4 .... Google tells me the PPh3 is a neutral ligand, how can this be if the metal has to have a charge associated with it? 
Physics
A container is initially partitioned by a wall into two compartments. The left compartment has volume V1 and the right compartment has volume V2. Both compartments are filled with identical ideal gases at the same temperature T and with an equal number of particles N but at ... 
Math
What is the standard deviation for the given data. Round your answer to one more decimal place 3,5,6,6,9,1 
Math
Thanks! 
Math
Do I just multiply 36X8=288 to find my answer? 
Math
Each morning, the baker gets up early to bake products for the shop to sell throughout the day. He likes to have 36 boxes of each item available in the shop. How much of each item will he need to bake? (Remember to use equations with a letter standing for the unknown quantity... 
Math
Please check to see if I did this correctly. This is a 2 part math problem. 1. Janelle has d dimes and n nickles. Her sister has 5 times as many dimes and 6 times as many nickles as Janelle has. Write the sum of the number of coins they have, and then combine like terms. This ... 
Math
A rectangle has a perimeter of 20 cm. The length of the rectangle is 1 more than twice the width. What is the measurement of the length and width of the rectangle? 
jim chavani highg
1000 598 49 44 
Finance
What is the market price of a 5000.00 bond that matures in 9 years and pays 400.00 interest till maturity compounded semi annually? 
Chm101 introductory inorganic chemistry
I'm going to say sodium, (as a dissolved ion) Wiki: "Every kilogram (roughly one litre by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium (Na+ ) and chloride (Cl− ) ions). " 
chemistry
looks good to me, except the C2H6OH should be C2H5OH. 
stats
nevermind, i found a similar solution. :) 
stats
38% * not .38% 
stats
so the question is: the weights of fish in a certain lake are normally distributed with a mean of 10, a standard deviation of 6. if 4 fish are selected what is the probability that the mean weight will be between 7.6 and 13.6? so usually to find prob, we use the normcdf ...