Questions Asked on
March 3, 2010

Physics
A car travels 20km due north and then 35km in a direction 60 degree west of north. Find the magnitude and direction of the resultant.
asked by Chinedu 
Physics
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 15 g nail when it is struck by a 550 g hammer moving with an initial speed of 5.1 m/s.
asked by Ryan 
pre calc
A ramp leading to a freeway overpass is 470 feet long and rises 32 feet. What is the angle of inclination of the ramp?
asked by kate 
physics
A 1300kg car rolling on a horizontal surface has speed v = 65 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.3 m. What is the spring stiffness constant of the spring?
asked by Justin 
physics
Three forces acting on an object are given by F1 = (  1.85i + 2.50j) N, F2 = (  5.10i + 3.25j ) N, and F3 = (  45.0i + 48.0j ) N. The object experiences an acceleration of magnitude 3.75 m/s2. (a) What is the direction of the acceleration? _________°
asked by anonymous 
Managerial Economics
Suppose Bill is on a lowcarbohydrate diet. He can eat only three foods: Rice Krispies, cottage cheese, and popcorn. The marginal utilities for each food are tabulated below. Bill is allowed only 167 grams of carbohydrates daily. Rice Krispies, cottage
asked by Nauman 
spanish
does "fin" have an accent?
asked by alex 
Physics
Figure 624 shows an initially stationary block of mass m on a floor. A force of magnitude 0.540mg is then applied at upward angle 16 degrees. What is the magnitude of the acceleration of the block across the floor if (a)Us=.6 and Uk=.5 and (b) Us=.4 and
asked by Stan 
physics help!!!
A hypothetical spherical planet consists entirely of iron (p=7860kg/m^3). Calculate the period of a satellite that orbits just above its surface. I really can't solve this! No other information was provided. Please and thank you
asked by Anonymous 
Physics
What is the apparent weight of a 75 KG astronaut 4200 km from the center of the earth's moon in a space vehicle.a) moving at constant velocity, and b) accelerating toward the moon at 209 m/s? state the direction in eachcase
asked by Vim 
Physics
Two objects moving with a speed v travel in opposite directions in a straight line. The objects stick together when they collide, and move with a speed of v/10 after the collision. (a) What is the ratio of the final kinetic energy of the system to the
asked by Zane 
math
rainbow Harbor Cruises charges $16/adult and $8/child for a round trip ticket. The records show that on a certain weekend, 1200 people took the cruise on saturady and 800 people took the cruise on sunday, The total receipte for saturday were $13,600 and
asked by nikki 
geometry
When the number w is multiplied by 4, the result is the same as when 4 is added to w. What is the value of 3w
asked by David 
Chem = )
Write the complete ionic equation for BaCl2 + NaOH > Al2(SO4)3 + BaCl2 > Al2(SO4)3 + NaOH > NaOH + Zn(No3)2 > BaCl2 + NaI >
asked by Lauren 
Physics
Two uncharged metal spheres, spaced 20.0 cm apart, have a capacitance of 28.0 pF. How much work would it take to move 14.0 nC of charge from one sphere to the other? *Please report answer in Joules.
asked by JOTHEY 
Maths Methods
Factorise 5x^2 + 8x + 3
asked by Jenny 
Gr. 12 College English
I can't seem to figure out the tone of the narrator in "The Lottery Ticket", and how it is established.
asked by AL 87 
College Physics
Part A) A 2.2 kg rock is released from rest at the surface of a pond 1.8 m deep. As the rock falls, a constant upward force of 5.0 N is exerted on it by water resistance. Let y=0 be at the bottom of the pond. Calculate the nonconservative work, Wnc , done
asked by Kyle 
chemistry
the number of moles of oxygen gas needed to react with 4.0 moles mg is
asked by rosie 
chemistry 106
Which of the following standard enthalpy of formation values are not zero at 25°C? (Select all that apply.) H2(g) N2(g) Au(s) Be(s) H20(g) Ne(g)
asked by Tanisha 
chemistry 106
The first step in the industrial recovery of zinc from the zinc sulfide ore is roasting, that is, the conversion of ZnS to ZnO by heating. 2 ZnS(s) + 3 O2(g) → 2 ZnO(s) + 2 SO2(g) ΔH = 879 kJ/mol Calculate the heat evolved (in kJ) per gram of ZnS
asked by Tanisha 
Physics
An uncharged capacitor is connected to the terminals of a 3.0 V battery, and 9.0 uC flows to the positive plate. The 3.0 V battery is then disconnected and replaced with a 8.0 V battery, with the positive and negative terminals connected in the same manner
asked by JOTHEY 
chemistry
Phosphoric acid and barium hydroxide solutions mix to form water and solid barium phosphate. Write the word equation, skeletal equation, and the balanced equation for this word problem.
asked by Joe 
CHEMISTRY
Nitrogen and hydrogen react to form ammonia. Consider the mixture of N2 and H2 in a closed container as illustrated below. The container contains 6 hydrogen atoms and 6 nitrogen atoms (all diatomic) Assuming the reaction goes to completion, draw a
asked by Mary 
Chemistry
The reaction: 2 HI==> H2 + I2, is second order and the rate constant at 800 K is 9.70 x 102 M1 s1. How long will it take for 8.00 x 102 mol/L of HI to decrease to onefourth of its initial concentration?
asked by Sleepy 
geometry 10
Type a counterexample that would have to exist in order for the conclusion to be false. The first thirtynine presidents of the United States were men. Conclusion: A woman cannot be president of the United States. counterexample:
asked by amy s 
psychology
According to the GateControl Theory of pain: a)we cannot control the gate through which pain enters or is emitted back from the brain b)the gate for pain is open only for survival instincts c)pain cannot pass through these special units (gates) d)we can
asked by vedrana 
MATH need help
A submarine was cruising at a depth of 153 m. It then rose at 4.5 m/min for 15 min. What was the submarine's depth at the end of this rise? If the submarine continues to rise at the same rate, how much longer will it take to reach the surface? My
asked by Anonymous 
CHEMISTRY!!
A student determined the calorimeter constant of the calorimeter. The student added 50.00 mL of cold water to 50.00 mK of heated , distilled water in a styrofoam cup. The initial temp of the cold water was 21,00C and the hot water, 29.15C. The maximum temp
asked by Sydney 
Chem
A student placed a mixture of BaO and CaO in a 1.46L flask containing carbon dioxide at 35C and 746mmHg. After the reactions were complete she found that the CO2 pressure had dropped to 2.40 x 10^2mmHg. How many moles of CO2 were consumed in the reactions?
asked by Staci 
Environmental Science
True or False 30. Three alternative energy sources are tidal power, ocean thermal energy conservation (OTEC), and hydrogen. True
asked by y912f 
Trig.
prove 2csc(2x)= csc(x)^2tanx
asked by Kyler 
Chemistry
Predict the sign of Delta S in the system for each of the following reactions. 2H3O^+(aq) + CO3^2(aq) > CO2(g) + 3H2O(l) ,+, or 0?
asked by Anonymous 
Chemistry
A given volume of nitrogen, N2, rewuired 68.3 s to effuse from a hole in a chamber. Under the same conditions, another gas required 85.6 s for the samw volume to effuse. What is the molecular mass ?
asked by Anonymous 
3rd grade
The cost of some software is between $60 and $70. The sum of the digits is 18. Which of these amounts could be the price of the software? And why? $57.80, $60.78, $66.60, $76.50
asked by mikel 
Biology
Could someone help me with this question; Ectothermic organisms have body temperatures that vary with the temperature of their surroundings. Discuss the effect this variation might have on the functioning of enzymes in these organisms. Suggest some ways
asked by Sarah 
science
What animal eats lions? What animal eats tigers? What animals eats wolves?
asked by christina 
Critical Thinking
WHAT TYPE OF FACELLIES IS THIS QUESTION AND WHY: gave a radio interview (broadcast on National Public Radio) in which he said that the Church was against the use of condoms. Even though the rate of AIDS infection in Puerto Rico is much higher than on the
asked by Tracie 
chemistry
Commercial bleach contains 5.25% (by mass) of NaClO in water. It has a density of 1.08 g/mL. Calculate the molarity of this solution.
asked by Drew 
College Physics
A 2.2 kg rock is released from rest at the surface of a pond 1.8 m deep. As the rock falls, a constant upward force of 5.0 N is exerted on it by water resistance. Let y=0 be at the bottom of the pond. Calculate the nonconservative work, Wnc , done by water
asked by Kyle 
trig
Prove: sec*4xtan*4x=1+2tan*2x
asked by Sarah Fuller 
buffers
9.00mL of 1.10M CH3COOH and 1.00mL of 0.900M CH3COO what is the pH?
asked by Reen 
trig
A rear windshield wiper on a car has a total arm length of 10 inches and rotates back and forth through an angle of 95 degrees. The actual wiper blade is 7 inches long. Find the area of thr windshield that is being cleaned.
asked by Sarah Fuller 
math
find the area of the circle to the nearest tenth...3.7m is the radius.
asked by may 
trig
Verify the identity: sin(x+y)/cos(xy)=cotx+coty/1+cotxcoty
asked by Sarah Fuller 
math
factor 3m^2n + 2m
asked by belinda 
4th grade
Of the first graders who were asked,1/6 like math best,2/3 like reading best, and 12 like science best.How many first graders were asked their favorite subject?
asked by Alyssa 
French
I need help with grammar, can someone check it out for me? 1. Une valeur mobilière est un fongibles, un instrument négociable représentant une valeur financière. Les deux types de valeurs mobilières sont les actions et les obligations. 2. Une action
asked by Jeff 
Physics
If five forces act towards the same point on a body at angles of 60, 120, 180, 240 and 270 degrees and their respective magnitudes are 60N, 40N, 30N, 25N and 20N. Determine whether this system of forces is in equilibrium; find the resultant.
asked by Chinedu 
geometry 10
Type a counterexample that would have to exist in order for the conclusion to be false. Every map that has ever been drawn can be colored with four colors so that no two regions colored alike touch at more than one point. Conclusion: Every map can be
asked by amy s 
chemistry
Suppose you tried to combine 42 grams of magnesium with 42 grams of oxygen. Which of the two substances would have some left after the reaction and how much magnesium oxide would be formed?
asked by tony 
physics
How much work must be done to stop a 1150kg car traveling at 145 km/h?
asked by Justin 
CHEM
1.) At what temperature will the rate constant for the reaction H2 + I2 to 2HI have the value 5.2×10−3 M^{1}s^{1}? (Assume k=5.4 *10^{4}M}{1)s}^{1} at 599 K and k=2.8 * 10^{2}M}^{1}s}^{1} at 683 K.) 2.)For the firstorder reaction N2O5 to 2NO2 +
asked by anonymous 
physics
Three blocks are in contact with each other on a frictionless, horizontal surface, as shown below. A horizontal force is applied to m1. Take m1 = 2.00 kg, m2 = 3.00 kg, m3 = 5.00 kg, and F = 22.0 N Find the acceleration of the blocks _______m/s2 (to the
asked by anonymous 
History
Well can i include that i think this is an interesting topic to study because you know about the different views. Can i add that to the statement?
asked by Ruth 
Chemistry
i seriously do not understand the formula for this problem :( The reaction for the decomposition of dinitrogen monoxide gas to form an oxygen radical is: N2O(g)==>N2(g)+O(g) . If the activation energy is 250 kJ/mol and the frequency factor is 8.0 x 1011
asked by Bababab 
chemistry
1.) At what temperature will the rate constant for the reaction H2 + I2 to 2HI have the value 5.2×10−3 M^{1}s^{1}? (Assume k=5.4 *10^{4}M}{1)s}^{1} at 599 K and k=2.8 * 10^{2}M}^{1}s}^{1} at 683 K.) 2.)For the firstorder reaction N2O5 to 2NO2 +
asked by anonymous 
Biology
How does the heart pump blood?
asked by Devaughn 
Math
Circle O is centered at the origin and has a radius of 5. Circle O' is the image of circle O after a translation of T1,2. What is the center of circle O'? What is the radius of circle O'?
asked by Collin 
Biology
19. The secondary xylem and phloem form from a. cork cambium b. vascular cambium c. apical meristems d. bark B? 7. A difference between beans and corn during germination is a. the cotyledons are above ground in the bean plant b. the corn shoot is hooked to
asked by mysterychicken 
science
where do scavengers go on the food web/ food chain? like on the top or botttom orr?
asked by christina 
enviromental science
How has the size and location of big cities changes since the year 1900?
asked by rod 
algorithm&pseudocode
write an algorithm for each of these two problems in pseudocode.(20 points each) Mrs. Smith is on a cruise to the Bahamas. On a rainy day, she decides to go to the casino bar and play blackjack. She pays a $5.00 cover charge to enter the casino bar. She
asked by hahn 
art
Gina plans to invest $12,000, part at 4% simple interest and the rest at 6% simple interest. What is the most she can invest at 4% and still be guaranteed at least $650 in interest per year?
asked by Anonymous 
chemistry
Nitrogen and hydrogen react to form ammonia. Consider the mixture of N2 and H2 in a closed container as illustrated below. Assuming the reaction goes to completion, draw a representation of the product mixture. Explain how you arrived at this
asked by Mary 
7th grade
describe three actions taken by the Second continental congress?
asked by ray 
enviromental science
Describe the major problems in today's large cities and the cause of these problems
asked by rod 
fractions
Claire cut some apples into eights. She ate all but 17 pieces. how many whole apples and parts of apples did she have left over?
asked by emily 
ap world
I need to write an essay on this....For the period 1500 to 1830, compare North American racial ideologies and their effects on society with Latin American/Caribbean racil ideologies and their effects on socitey
asked by Lisette 
Math
A vet surveys 26 of his patrons. He discovers that 14 have dogs. 10 have cats. 5 have fish. 4 have dogs & cats. 3 have dogs & fish. 1 has a cat & a fish. Use a diagram to answer the following question: If no one has all 3 kinds of pets, how many patrons
asked by Lindsay 
7th grade
describe three actions taken by the Second continental congress?
asked by ray 
4gr math
on the morning of an important game,gail woke up at the time shown on the clock. she wanted to up 2 hours 35 minutes later. what time did gail want to wake up
asked by jojo 
physics
finding the bearing of a vector? when i am giving a vector like 56 m at 296 degrees do i have to find a bearing of 296 degrees or is it only when i get something like 296 degrees south of east
asked by jake 
vocabulary
Soldiers wear this greenish fabric named by Persians and Hindus so they can't easily be seen. "Is the answer khaki, kiosk, or camoflauge?"
asked by sierra (6th grade) 
Critical Thinking
What type of Facellies is this question and why: From a letter to the editor: “The counties of Michigan clearly need the ability to raise additional sources of revenue, not only to meet the demands of growth but also to maintain existing levels of
asked by Tracie 
economics
I need help with part D below, i thought the function would be y=x/3 + y/2. 1. You produce sandwiches for the Perk cof ee stand. Sandwiches require 3 tablespoons of mayonnaise (x) and 2 tablespoons of mustard (y) (a) Write the production function for
asked by Anonymous 
MATH
HOW MANY DM ARE IN 7KM
asked by JOSELYN 
Spanish
Rewriting this sentence in DIRECT OBJECT PRONOUNS. Vamos a ver a mi actor favorito en el teatro.
asked by Janie 
math
what is 32% in a fraction and decimal?
asked by Cookiie 
Math/Geometry
Can you help me with this? Find the area of each regular polygon. Round to the nearest tenth. 1. an equilateral triangle with an apothem 8.9 inches long
asked by Stan 
math
3x+6
asked by djones 
vocabulary
What word has a French name, but this dance was started in Russia? Options: hula, polka, ballet, or waltz.
asked by sierra (6th grade) 
English II
I really need some help on a good thesis statement on offshore drilling, and I am against it!
asked by Kasey 
social studies
indentify: green mountain boys
asked by ray 
math
8 * 10 to the fourth power in standard form
asked by gina 
Statistics
I'm looking at my notes and I can't seem to figure how my teacher did this problem. She used her name which has 9 letters, 3 vowels, and 6 consonants. If we were to reach in the bag and grab 3 letters out. By using the probability distribution what's the
asked by John 
calculus
if F(x)=f(g(x)), where g(2)=4, g'(2)=3, and f'(4)=5, find F'(2)
asked by Anonymous 
dynamics
a mass m= 10kg is hanging from the end of a spring. intially the spring is unstretched when the mass is pushed perfectly downward with an initial velocity of 1 m/s. the spring constant is k=400n/m and the acceleration of gravity is g=9.81m/s^2. find the
asked by Big Rich 
Chem
Calculate the volume ( mL ) of the solute acetic acid and the volume ( L ) of the solvent H2O that should be added to generate 5.01 kg of a solution that is 0.694 m acetic acid. volume ( mL ) of the CH3CO2H volume ( L ) of the H2O i just want to check my
asked by Mitch 
Science
Do you know at what level PCE concentrations are of concern? Is 8,300 PPB a major problem?
asked by Marissa 
geometry
If p is an interger and 3 is the remainder when 2p+7 is divided by , then p could be what?
asked by David 
chemistry
A reaction is 50% complete in 34.0 min. 1.) How long after its start will the reaction be 75% complete if it is first order? 2.)How long after its start will the reaction be 75% complete if it is zero order? steps would be helpful
asked by joe 
math
there is a playground shaped like a rectangle 40 feet wide and 80 feet long.what is the perimeter of the yard?
asked by vanessa joeph garica fernandez 
physics
need help combining these vectors 56m at 296 degrees, then 83m 152 degrees
asked by jake 
Physics
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 15 g nail when it is struck by a 550 g hammer moving with an initial speed of 5.1 m/s.
asked by Ryan 
SOCIAL STUDIES
ANDREW JACKSON 1. What are details (2) of Indian removal policies that lead to the Trail of Tears? 2. Was the Trail of Tears a "triumph of democracy?" Why or why not?
asked by Happy Face 
Chemistry
Commercial bleach contains 5.25% (by mass) of NaClO in water. It has a density of 1.08 g/mL. Calculate the molarity of this solution. (Hints: assume you have 1 L of solution (mass 1080 g); molar mass of NaClO is 74.4 g/mol)
asked by Drew 
Physics
A sled is initially given a shove up a frictionless 24.0° incline. It reaches a maximum vertical height 1.10 m higher than where it started. What was its initial speed?
asked by Luricela 
Physics
A hypothetical spherical planet consists entirely of iron (p=7860 kg/m^3). Calclate the period of a satellite that orbits just above its surface. I started out with the density formula P=M/V, but i kept subbing in other formulas, but i get stuck..can
asked by ALan 
Finance
The Sterling Tire Company’s income statement for 2008 is as follows
asked by hanad 
Math
A famous golfer tees off on a long, straight 472 yard par 4 and slices his drive 11 degrees to the right of the line from the tee to the hole. If the drive went 285 yards,how many yards will the golfer's second shot have to be to reach the hole?
asked by Anonymous 
Statistics
An experiment consists of rolling a die and selecting a marble from a bag. the bag has 7 orange, 3 pink, and 6 grey marbles. What is the probability of rolling a multiple of 3 and selecting a pink marble? Anwer: The two events are independent of each
asked by Jason (check answer Please) 
math
In 1991 the population of Kenosha, Wisconsin, was 132,000. Between 1991 and 1996, the population of Kenosha increased by approximately 2000 people per year Question: Use the model to estimate the population of Kenosha in 2006
asked by Lilly 
Social Studies
How can you remember that a democracy has people who rule themselves?
asked by Anonymous 
statistics
find the zscore corresponding to a score of X=60 for the each of the following distributions. u=50 and 0=10 u=50 and 0=5
asked by Patricia 
Chemistry
Balance the following equation: C6H5COOH + O2 ==> H2O + CO2
asked by Joe 
chemistry
if 23 g of Fe2O3 formed, how many grams of Fe must have reacted?
asked by michelle 
government
The opposition to school vouchers was a key part of which party's platform in 2000?
asked by Levana 
Chemistry
How do I solve this: If a chemical reaction occurs at a rate of 2.25 x 10^2 moles per liter per second at 322K, what is the rate expressed on moles per liter per minute?
asked by Saul 
Math
In the United States, every 57 minutes an underage drinker is involved in a traffic fatality. A recent report urges a crackdown on teenage drinking and driving. Estimate the number of underage drinkers involved in traffic fatalities each day.
asked by Nina 
Physics
A melon of weight 12 N (near the surface of Earth) is moved through a displacement of magnitude 1.00 m. What happens to the gravitational potential energy (of the melon/Earth system) due to this displacement.
asked by Anonymous 
chemistry
Is hydroxyl(OH) is the functional group present in benzyl alcohol? And what classification tests would you run to verify your IR results?
asked by Jenny 
math
how to simplify 15/60 in a fraction
asked by james 
chemistry
what are the appropriate masses of the subatomic particles expressed in atomic mass unit
asked by Anonymous 
trig
A rear windshield wiper on a car has a total arm length of 10 inches and rotates back and forth through an angle of 95 degrees. The actual wiper blade is 7 inches long. Find the area of thr windshield that is being cleaned.
asked by Sarah Fuller 
trig
Prove: 1sinx/1+sinx=sec*2x2secxtanx+tan*2x
asked by Sarah Fuller 
social studies
what do people speak in ukrain?
asked by elena 
math
to win 1 million dollars,you must draw two cards whose sum is 9 , from a stack of cards numbered 1 though 10 .After the first draw, you replace the card and shuffle the stack again for for the second draw. Wat is the chance your two cards will have a sum
asked by holly 
math
find the missing length in this diagram showing a Tsquare. (reduce the radical to simplist form. 6 cm (one side of triangle) 3 cm ( other side of triangle) the third side (diagonal line conecting other two sides)= x cm.
asked by veronica 
math
find a polynomial with integer coefficients such that square root of 3 + square root of 5 is a root of the polynomial
asked by nancy 
chemistry 106
Determine the amount of heat (in kJ) given off when 2.23 multiplied by 104 g of ammonia are produced according to the following equation. Assume that the reaction takes place under standardstate conditions at 25.0°C. N2(g) + 3 H2(g) 2 NH3(g) ΔH°rxn =
asked by Tanisha 
math
I was asked to deduce the values of a,b, and c for the parabola y= ax^2 + bx +c. There are 4 clues given: 1. the yintercept is (0,6) 2. The curve goes through (4,5) 3. The curvev has a turning point at (2,3) 4. the line of symmetry is x=1 Questions: It is
asked by Dyan 
science
identify a company that is currently employing sustainable development practices i have one company coco cola but i need three please help me
asked by anu 
chemistry 106
Calculate the work done if a gas is compressed from 8.3 L to 3.3 L at constant temperature by a constant pressure of 3.0 atm, and give your answer in units of joules. (1 L · atm = 101.3 J)
asked by Tanisha 
arithmetic
what is 11/4,4/7 and 10/21 in the simplest form i tried adding divide not coming with the right answer
asked by james 
chemistry 106
A 0.1589 g sample of solid magnesium is burned in a bomb calorimeter that has a heat capacity of 1769 J/°C. The calorimeter contains exactly 251 g of water, and the temperature increases by 1.126°C. Calculate the heat given off by the burning Mg, in kJ/g
asked by Tanisha 
English
Analogy for INFINITE: END, would be the same as: wealthy:money blithe:happines abysmal:bottom contrite:repentance delectable:delight
asked by Karen 
chemistry 106
Methanol, ethanol, and npropanol are three common alcohols. When 1.00 g of each of these alcohols is burned in air, heat is liberated. Calculate the heats of combustion of these alcohols in kJ/mol. (a) methanol (CH3OH), 22.6 kJ (b) ethanol (C2H5OH),
asked by Tanisha 
Chemistry (URGENT)
I have a test soon. If you can help me with these questions, that would be great. 1. Define and describe the following. a)Alkaline  metal  base b)Corrosive  burn/eat away  acid c)Caustic  harsh  both? (acid + base) d)Low pH  06.99  acid Please
asked by John 
History
Problems the government faced in mobilizaing the public and the economy and the rising of an army for world war 1
asked by Joy 
algebra
Y=2x5\3y5
asked by Anonymous 
algebra
A box contains two different types of candy, weighs 10 pounds, and costs $14.55. One type of candy costs $1.50 a pound. The other costs $1.35 a pound. How many pounds of each kind are there?
asked by Aspen 
9th grade
science fair ideas
asked by Anonymous 
English
Does any one know what the poet means by these lines in this poem? "Storm clouds are gathering The wind is gonna blow The race of man is suffering And I can hear the moan," Thank you :) Alone Lying, thinking Last night How to find my soul a home Where
asked by Gaveen 
world history
Why did missionaries support european imperialism?
asked by Anonymous 
chemistry
given the reactant amounts specified in each chemical eguation, determine the limiting reactant in each case: a. HCL+NaOH>NaCl+H2O 2.0 mole of HCl 2.5 mole NaOH b. Zn+2HCl>ZnCl2+H2 2.5 mole Zn 6.o mole HCl c. 2Fe(OH)3+3H2SO4>Fe2(SO4)3+6H2O 4.0 mole
asked by christina 
chemistry
Predict the sign of Delta S in the system for each of the following reactions. 2H3O^+(aq) + CO3^2(aq) > CO2(g) + 3H2O(l) ,+, or 0?
asked by Janice 
algebra
If is a line whose equation is y= 2x  1, find the equation of the image of under each of the following translations: in book explanation a. (x, y) S (x, y  2) b. (x, y) S (x +3, y) c. (x, y) S (x  3, y + 2)
asked by Rebecca 
statistics
2.0,3.7,4.9,5.0,5.7,6.7,8.5,and 9.0 what is the range? median? mean? mode?
asked by latanya 
physics
need help combining these vectors (if you can please show me a step by step guide of combining these two. Thank you 56m at 296 degrees, then 83m 152 degrees
asked by jake 
math
two lines intersect in a plane and form four angles. one of the angles formed by this intersection is a 53degree angle. What are the measures of the other three angles? explain your answer
asked by zay 
language arts
in a riddle, a girl stands on one end of a newspaper spread flat on the floor. her brother stands on the other end. neither can touch the other person. how come? please help me!
asked by alyssa 
Data Management
Two cards are drawn from a standard 52 card deck. a) what is the probability that both cards drawn are black? b) what is the probability that one card is red and the other is black? c) what is the probability that a two face cards are drawn? d)what is the
asked by Jud 
Physics
A sled is initially given a shove up a frictionless 24.0° incline. It reaches a maximum vertical height 1.10 m higher than where it started. What was its initial speed?
asked by Luricela 
psy/210
Please explain homework Checkpoint Parenting Styles and Development Appendix F. Describe how three adults, each brought up under a different parenting style as a child might cope differently with one of the changes listed in the table
asked by terry 
L.A
Since happy,sad,upset,etc. are part of feeling/emotions, what is hope, insight, optimism, courage under?
asked by Shadow 
MATH need help
Two wooden poles measured 1.35m and 0.83m in length. to make a new pole thay were attached by overlapping the ends and tying them together. the length of the overlap was 12cm. what was the total length of the new pole in metres? How do you do this?
asked by Anonymous 
physics
need help decomposing theses vectors to x and y 52.9 meters at 19 degrees rectangular corordinate system
asked by jake 
psychology
According to the GateControl Theory of pain: a)we cannot control the gate through which pain enters or is emitted back from the brain b)the gate for pain is open only for survival instincts c)pain cannot pass through these special units (gates) d)we can
asked by vedrana 
physics
in physics, is it easier to pull a cart at a 45 degree angle or put an 8 ft board underneath, and pull it at a 20 degree angle?
asked by Anonymous 
Math
Leonardo da Vinci drew a portrait of a young woman. The portrait is shaped like a rectangle. It is 13.5 inches long and 10 inches wide. What is the area of the portrait?
asked by Jamescia 
english
please explain : “Science gives an intellectual view of reality, and the arts try to make the emotions as precise and disciplined as sciences do the intellect. But of course it’s nonsense to think of the scientist as a cold, unemotional reasoner and
asked by sammi 
11th grade
What value of k will make 3x^2+kx)4 an even function
asked by Kayla 
English
Thank you for your last corrections. Can you check the grammar on the following sentences, please? 1) Can you say "mint pudding with fused dark chocolate"? 2) My aunt bought a perfume for me. (instead of the usual: she gave me a perfume for Christmas) 3)
asked by Franco 
science
my first is VAN but not in PAN,my second is EARTH and also in HEAVEN,my third is ONE and not in two,my fourh is in BUN and also in FUN,my last is in STAR but not in RADAR,i am a planet that moves round the sun.name the planet.
asked by shubham 
Human Resource
I need help doing an outline on how to be a successful interviewer, how would I start it or what should I start with?
asked by Denise 
Binomial
Help me on this one :( Express y= (73xx^2)/[((1x)^2)(2+x)] in partial fractions. Hence, prove that if x^3 and higher powers of x may be neglected, then y=(1/8)(28+30x+41x^2) I did the first part of expressing it in partial fractions. (Since it's very
asked by Keira 
accounting
Can someone give me leads on the Sachiko case. It is a comparison of US vs. Japan financial statements.
asked by Carol 
Biology
19. The secondary xylem and phloem form from a. cork cambium b. vascular cambium c. apical meristems d. bark B? 7. A difference between beans and corn during germination is a. the cotyledons are above ground in the bean plant b. the corn shoot is hooked to
asked by mysterychicken 
Physics
A hypothetical spherical planet consists entirely of iron (p=7860kg/m^3). Calculate the period of a satellite that orbits just above its surface. I really can't solve this! No other information was provided. Please and thank you
asked by Anonymous 
Precalculus
Please help me with these questions ASAP!! Suppose that f(x)=log3(x1) a)If f(6)=1.4 and f(8)=1.7,then evaluate log3(35) and log3(7/5). b)If f(3)=0.6, find log9(2).
asked by jh 
Human Resource
How do regular consultations between manageres and their subordinates impact productivity and job satisfaction?
asked by Shereka Sanders 
math
solve for w, P=2l+2w could you please show me how this is done and explain the rules. i'm hopelessly lost with this. thanks.
asked by jaycey 
Finance
If the Fed tighten the money supply to slow the rate of inflation how might such actions benefit people who want to save money
asked by Mary 
Social Studies
Was Brown vs. Board of Education the only events that have an effect on school segregation? Or was there other events that made school segregation unconstitutional?
asked by Shadow 
Exploring Space
I need to know about the 3 conditions which are need necessarily to travel to the stars. My answer is below. Please add any other information, thanks. Not so sure if my answer makes sense. 3 conditions which are needed neccessarily to travel to the stars
asked by Sara 
History
I have to write a five paragraph essay on the benefits of US expansion and the positive effects that it had on the philippines, cubans, china, and native americans. I can't figure out how to start it.
asked by Stacey 
Precalculus
I REALLY NEED HELP WITH THIS QUESTION, PLEASE HELP!! Give an example of a logarithmic function g, which has a vertical asymptote x = –2, and passes through the origin.
asked by jh 
Exploring Space
this is one questio which I'm stumped on. = y must we be able to travel at the speed of light to explore space. I don't realy know how to explain myself clearly and put that into an answer. I don't get this
asked by Sara 
Math
A reduced fat cookie vontains 6g of fat per serving. In order for food to be considered reduced fat, it must have at least 25% fat than the regular item. What can a person conclude about how much fat is in a serving of the regular cookie? How much fat does
asked by B.B. 
childcare
the formation of childrens core values is most strongly influenced by?
asked by sally 
Chemistry
The reaction: 2 HI==> H2 + I2, is second order and the rate constant at 800 K is 9.70 x 102 M1 s1. How long will it take for 8.00 x 102 mol/L of HI to decrease to onefourth of its initial concentration? can someone please show me how to set this up?
asked by Bababab 
physics
A skier with a mass of 70 kg starts from rest and skis down an icy (frictionless) slope that has a length of 52 m at an angle of 32° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes horizontal, the snow becomes
asked by Larry 
Exploring Space
y is a chemical rocket incapable of getting us to our nearest neighbor proxima centauri? Is it incapable of not getting us to our nearest neighbor proxima centauri because there isn't enough fuel in the universe to provide for the rocket?
asked by Sara 
physics
A balloonist, riding in the basket of a hot air balloon that is rising vertically with a constant velocity of 10.1 m/s, releases a sandbag when the balloon is 43.4 m above the ground. Neglecting air resistance, what is the bag's speed when it hits the
asked by Jake 
Math
Here is the question. I have it solved but I'm not sure that my answer is right. Could someone please help? A metal stays solid at Fahrenheit temperature below 1801.5 degrees. Determine ( in terms of an inequality) those Celsius temperatures for which the
asked by B.B. 
psychology
Neurons communicate with each other through: a) electrical language only b)electrical and hemical language c) the glial cells d)neurogenesis Is C correct answer?THANK YOU
asked by vedrana 
physics help!!
A hypothetical spherical planet consists entirely of iron (p=7860kg/m^3). Calculate the period of a satellite that orbits just above its surface. I really can't solve this! No other information was provided. Please and thank you
asked by Anonymous 
earth
if the illustration is the effect of freezing water on rock what term best decribe the process?
asked by shaay 
macroeconomics
help me graph this answer slope is rise over run. With each 100 increase in income (run), consumption goes up by 50 (rise). So, 50/100 = .5 = slope
asked by mary 
math
x+9y=18 find slope
asked by josh 
Chem
A .326L container holds 0.146g of Ne and an unknown amount of Ar at 30C and the total pressure is 627 mmHg. Calculate the moles of Ar present? (I have calculated temp 308K, pressure is 0.825 atm and moles of Ne are .007)
asked by Staci 
Social Studies
World War I 1. The alliance system was supposed to prevent war, but it turned a local conflict into a general European war. Why did it fail so badly? 2. World War I cost Germany and other European countries on an economic and a social level. How were
asked by Matthew 
math
In each part, give a value that fits each description. a. 2 1/3 times as long as 24 cm b. 75% as long as 24cm
asked by Anonymous 
math
28 students collected 12,374 soda can tabs. If some of the students collected one more tab each than the rest of the students, how many collected 441 and how many collected 442 tabs?
asked by ashley 
english
please explain : “Science gives an intellectual view of reality, and the arts try to make the emotions as precise and disciplined as sciences do the intellect. But of course it’s nonsense to think of the scientist as a cold, unemotional reasoner and
asked by sammi 
Exploring Space
if u could travel at the speed of ligt without fuel, where would the energy required for the engine come from? is this possible? it is impossible to travel anywhere without fuel. The only other option is to walk by foot. I don't know the answer to the
asked by Sara 
amin
10 sentence about perfect organisation
asked by ram 
calculus
Let f(x)=x+4 and g(x)=(x2)^2. Find u(x) so that f(g(u(x)))=4x^2  8x +8.
asked by Anonymous 
math
solve useing the addaditon and multiplication 66x > 35x x>?
asked by jessica 
English
Can someone please tell me who she is refering to as "you" in this poem? Also, what the poem means, beyond the literal level. Thank you :) Alone Lying, thinking Last night How to find my soul a home Where water is not thirsty And bread loaf is not stone I
asked by Gaveen 
physics help
An amusement park ride consists of a car moving in a vertical circle on the end of a rigid boom of negligible mass. The combined weight of the car and riders is 5.1 kN, and the circle’s radius is 10 m. At the top of the circle, what are the (a) magnitude
asked by Anonymous 
Algebra
3Sqrt24x^10yY^8
asked by Wanda 
math
find the area of a square with a side of 3 ft.
asked by kay 
History
Hello. I am doing an essay on the impact of the industrial revolution. I have done the intoduction and two paragraphs. Please can you give me some feedback. thanks What was the impact of the Industrial Revolution The Industrial Revolution was a period from
asked by Ruth 
math
sam has an savings account that increased in value over a twelve month period from $8,765.00 to 9,006.04 . what percent interest did he receive for the 12 month period?
asked by Anonymous 
English
1. As you have the more,you want the more. 2. The more you have, the more you want. 3. The taller you become, the wiser you become. 4. The older you become, the weaker you become. 5. The happier you are, the healthier you look. 6. The more you study, the
asked by rfvv 
Statistics
1. Use the following to answer questions: The table below presents the probability distribution for X = the number of email messages you will receive in the next 10 minutes. (9 pts) X 0 1 2 3 P(X) .35 .35 .25 .05 a. What is the probability that no emails
asked by Denise 
math
1/6 of 30
asked by marina 
4th grade
what kind of triangle has all 3 angles that are all less than a right angle?
asked by Jordan 
physics
What is the maximum speed with which a 1200kg car can round a turn of radius 68 m on a flat road if the coefficient of static friction between tires and road is 0.80?
asked by Justin 
calculus
Find f' for each of the following where g and k are differentiable functions: f=(g^3)(k^2)
asked by Anonymous 
physics
What is the minimum work needed to push a 850 kg car 940 m up along a 9.5 degree incline? Part A: Ignore Friction Part B: Assume the effective coefficient of friction retarding the car is 0.20.
asked by Justin 
type of study design
Rates of prostate cancer were compared to those exposed to caloric restriction and those that were not exposed to such deprivation. I have a list to select from: Cohort Cross sectional x Case series case control experimental x ecological x Im sure its not
asked by Sara 
college
in the following sentence i have to add an adjective clause at the indicated point. Companies that.....are prospering more today than firms that..... How do I answer that???
asked by Jordan Smith 
History
Was not sure whether you got the last post. I am repeating it. Is this a thesis statement. Please comment and can you advise me whether the grammar,spelling etc. Is good? In this essay I am going to show you the impact of the Industrial revolution. By the
asked by Ruth 
Math
suppose the temperature is 12 degrees F and rises 4 degrees every hour for 3 hours. What will the temp b then? Can you please help me write out the equation? Thanks
asked by Kate 
Exploring Space
if u could travel at the speed of ligt without fuel, where would the energy required for the engine come from? is this possible? Would gravity control be helpful? Antimatter? WarpDrive? I need help answering this question:(
asked by Sara 
English Literature
Each of the poems Ana and My papa's Waltz, write an essay to describe the relationship presented.
asked by Devaughn 
law
what are laws
asked by josie 
bus. stats
Given that math SAT scores are normally distributed (follow the empirical rule) m=500 Standard deviation=100 what is the math SAT score for someone who is in the 80th percentile of his or her class.
asked by mike 
law
what are laws
asked by josie 
bus. stats
Given that math SAT scores are normally distributed (follow the empirical rule) m=500 Standard deviation=100 what is the math SAT score for someone who is in the 80th percentile of his or her class.
asked by mike 
chemistry
The pH of a certain acid having a concentration of 0.20 M was measured. The pH was 2.50. Was this a strong or a weak acid? I answered it is a strong acid because strong acids have a lower pH. I am just not too sure if there is anything missing in my
asked by Billy 
CHEM
If you are given only the time and Molarity for example Time Molarity 30s 0.678M 60s 0.762 M 70s 0.00987 M How would you find the constant rate? given only Molarity and time
asked by anonymous 
Gr. 12 English
Before the end of Anton Checkhov's "The Lottery Ticket", he switches the perspective of Ivan to his wife. Next, I have to explain why this technique is or is not effective.
asked by AL 87 
math
26 minutes change in to seconds
asked by esha 
HOME ECONOMICS
WHAT ARE THE DISPOSAL OF FULNESS,THE METHODS USED TO CONTROL THM AND HOW ARE THEY CARRIED
asked by SHIRLEY 
computers
what is the purpose of separating Windows XP Central processes from user mode applications that run with fewer privileges?
asked by Anonymous 
physics
Three blocks are in contact with each other on a frictionless, horizontal surface, as shown below. A horizontal force is applied to m1. Take m1 = 2.00 kg, m2 = 3.00 kg, m3 = 5.00 kg, and F = 22.0 N
asked by diamond 
Biology
Can you guys please just help me out? 19. The secondary xylem and phloem form from a. cork cambium b. vascular cambium c. apical meristems d. bark B? 7. A difference between beans and corn during germination is a. the cotyledons are above ground in the
asked by mysterychicken 
Maths
Increase 472 by 25% but it has to be this way : for example increase 270 by 40% would be 270/10 and x by 4 but in this case the percentage ends with 5 so i need help
asked by Nata 
History
Is this better? If you do not know the impact of the Industrial revolution, you will not understand anything in this essay. By the end of the essay you will understand that life was different before the Revolution and after. You will know that not all the
asked by Ruth 
MATH214
A tennis ball can in the shape of a cylinder holds three tennis balls snugly. If the radius of a tennis ball is 3.5 cm, what percentage of the tennis ball can is occupied by air?
asked by Rebecca 
English Literature
Compare my Papa's walta with ana. they are both poems.
asked by Devaughn 
trig
How do you find the exact values of sin(u/2), cos(u/2), and tan(u/2) of tan(u)=5/8
asked by Kyler 
chemistry
Would you expect orthodimethoxybenzene or paradimethoxybenzene to be nitrated more readily? Justify your choice briefly.
asked by Niki 
English
Before I start posting my questions, I want to ask has anyone read "The Lightning Thief"?
asked by Sara 
History
Is the outline the whole statement. If not tell me. If you do not know the impact of the Industrial revolution, you will not understand anything in this essay. This topic is very interesting to study because you know about the different views. By the end
asked by Ruth 
Trig.
Prove sin(4x)= (4sinxcosx)(2cos(x)^(2)1
asked by Kyler 
Computer
Computers are classified into Four areas, please explain how they are classified?
asked by Waalyn Waal 
Math
How would I write this out? The high temp for a day is 6 degrees C. The mean temp for the day, which is the mean of the high and low temps, is 4 degrees C. What is the low temp for the day? Thank you.
asked by Erin 
Maths
What roots can I use to sketch this graph of: y = x^4  x^2
asked by Remy 
English  2nd last question
I have to answer this. "What effect does this tone have on the reader's response to the story. Support your answer."
asked by AL 87 
critical thinking
SUV's are apartments on wheels
asked by Anonymous 
History
Ok. I understand what an outline statement is. I am now going to write it. Please give me about 1015mins. Thanks
asked by Ruth 
physics
In the high jump, Fran's kinetic energy is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must Fran leave the ground in order to lift her center of mass 1.95 m and cross the bar with a speed of 0.70 m/s?
asked by Justin 
English  final question
I just cannot figure out what word matches this definition. "An object of person that represents a quality, idea, or condition."
asked by AL 87 
writting
paregraph about organization plzzzzzzzzzzz help me
asked by rima 
math
how would you factor 5x^2+x3x3 because I got x(5x1) 3(x1) which doesn't work. Please help.
asked by Dezy 
chemistry
Would you expect orthodimethoxybenzene or paradimethoxybenzene to be nitrated more readily? Justify your choice briefly.
asked by Niki 
English
my teacher asked(only me)that how to put the heart on the line and it contains 5 marks. Can u please tell me i would be so much graceful. Thank you very much, Blish.
asked by Blish Jackson 
Maths
When Professor Sum was asked by Mr. Little how many students in his classes, he answered. “All of them study either languages, or not at all. Onehalf of them study languages only. Onefourth of them study French, oneseventh study physics only, and 20
asked by Amanda 
6th grade math
Ok i need 59% of 100 25% of 30 and 75% of 88 PLEASE!
asked by Avril 
math
how do you simplify a problem like x=30x/2x^2?
asked by Dezy 
8th grade Math
i need some explanation on Area of Trapezoids and Parallelograms....? can some body explain how to find the area?
asked by Austin 
5th grade
How do you figure out area of compound figure
asked by Sydney 
math pre calculus
you are depositing $1000 dollars in a savings account and are given the following options. 6.2% annual interest rate, compounded annually 6.1% annual interest rate, compounded quarterly 6.0% annual interest rate, compounded continuously for each option,
asked by carly 
General Question
How did Mary Wollstonecraft affect firstwave feminism? How did Simone de Beauvoir's writing shape the second wave? How did the events of the first and second wave affect each other?
asked by Devonette 
English
Can you check the grammar in the following sentences, please? Thanks a lot for your last corrections! 1) It was fantastic to see how the sky changed from dark blue to violet and finally to yellow. 2) I drank an orange juice. 3)In the morning I put my
asked by Franco 
12th grade
the constitution was written in order to establish a stronger central government that that provided by the articles of confederation, however the whole point of th american revolution was to renounce an oppressive central authority. explain this apparent
asked by kristen 
calculus
Given f(x) = 2(x^(5/3))  5(x^(2/3)) Find the slope of the tangent at each xintercept
asked by Anonymous 
calculus
Describe all of the different ways a function may not be differentiable at the point P (a,f(a)).
asked by Anonymous 
Chemistry
Nitrogen and hydrogen react to form ammonia. Consider the mixture of N2 and H2 in a closed container. In this container there are 6 diatomic molecules of hydrogen and 6 diatomic molecules of nitrogen. assuming the reaction goes to completion draw a
asked by student 
english
how would i restate this thesis: we live in a world where the enviornment around us impactour lives
asked by sara 
chemistry
What information does this value of Kc indicate with regard to the amount of NO(g)in the equilibrium mixture at a 25 degrees celcuis?THe cointainer is heated and the system reacheas a new equilibruim at 2500 degrees celcuis at this temperature there 0,4
asked by PAMELA 
math
MTH 156
asked by Traci 
2nd grade
Do people sink or float Why
asked by Addi 
SOCIAL STUDIES
Does Andrew Jackson believe that the Trail of Tears was a triumph of American democracy?
asked by Happy Face 
7th grade
what ideas can i get to persuade my class about why we should have longer days and time in school.
asked by angel flores 
math
I have a question about sets. If you have uppercase letters and lower case letters and they question is asking are these equal or equivalent or neither. I believe it would be equivalent because they are the same but different. Please help thanks
asked by Angie 
math
how do you solve? 1/4 x + y = 2
asked by Lindsay 
calculus
There are four integrals: 1) definite integral x/(1+x^4)dx b/w 0_infinity 2) definite integral (x^2)/(1+x^4)dx b/w 0_infinity 3) definite integral (x^3)/(1+x^4)dx b/w 0_infinity 4) definite integral (x^4)/(1+x^4)dx b/w 0_infinity Which of these integrals
asked by Carmen 
English
I NEED HELP PLEASE!!! I need a 5 paragrph mini theme on " Pizza Is The Perfect Meal". For each paragrphs I need 2 references. PLEASE, PLEASE, HELP SOON.
asked by Lori 
English
I have to explain why Ivan's musings over winning the lottery ticket do or do not reveal his true character and feelings towards others. But I just can't seem to find the examples. This is from the short story, "The Lottery Ticket".
asked by AL 87 
algebra
how would i solve for C in this equation (a/(b+c))d = e/f
asked by Anonymous 
Speech Quick ?
Would this be a good informative speech topic? Impact of media on society
asked by Natalie 
history
why did the framers of the constitution revrse their thinking?
asked by kristen 
Finance
An investment of $7,800 made March 31, 2001 pays $700 at the end of every six months for five years and pays $10,000 on March 31, 2006. What rate of interest was being earned every six months?
asked by J 
ENGLISH
What do you think of when you hear the term academic honesty? How does knowing the difference among original ideas, common knowledge, and plagiarism help you stay honest when you write an academic paper? What are some of the consequences of not being
asked by ELIZABETH 
English
I forgot to include the following sentences. Thank you very much for your invaluable help. 1) I went to church for (the) Christmas Mass. 2) How many hours (or just: how long is possible) did it take you to get there? 3) How many days (or just: how long)
asked by Franco 
JORDAN
Complete the following sentence in a way that makes it balanced. Politics make strange bedfellows, and...
asked by Jordan Smith