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Questions Asked on November 29, 2010

A box weighing 215 N is placed on an inclined plane that makes a 55 degree angle with the horizontal. Compute the component of
1. 4 answers
2. asked by Jim
3. 9,129 views
An electron in a hydrogen atom relaxes to the n= 4 level, emitting light of 138 THz .What is the value of for the level in which
1. 2 answers
2. asked by lorah hilpolep
3. 7,726 views
a hydrated salt is a solid that includes water molecules within its crystal structure. a student heated a 9.10-gram sample of a
1. 8 answers
2. asked by Hank
3. 5,855 views
The following data were collected at the endpoint of a titration performed to find the molarity of an HCl solution:Volume of
1. 3 answers
2. asked by vin
3. 5,379 views
Which of the following equations does not represent an oxidation-reduction reaction?3Al + 6HCl → 3H2 + AlCl3 2NaCl + Pb(NO3)2
1. 2 answers
2. asked by Anonymous
3. 5,135 views
I was just wanting to make sure I did these right.How many grams of solute are in each of the following solutions? a.) 2.5 L of
1. 1 answer
2. asked by Carrie
3. 3,828 views
1. State specifically how you would make a conclusive test for an iron (III) salt.2. Which test for iron (II) ions is
1. 2 answers
2. asked by Justin
3. 3,719 views
if .500 mol of copper combines with .250 mol of sulfur what is the empirical formula of copper sulfide?
1. 1 answer
2. asked by Pam
3. 3,396 views
Alfonso got an 87.5% on his test. He got 21 right. How many questions were on the test??
1. 2 answers
2. asked by Laura
3. 3,353 views
Steven has 9 gold coins that are identical in appearance. However, one coin is counterfeit an weighs slightly less that the
1. 2 answers
2. asked by Alejandro
3. 3,331 views
the formula H2O2 is an example of1.molecular formula 2. an empirical formula 3.an ionic formula 4.an organic formula
1. 3 answers
2. asked by tia
3. 3,290 views
I'm having trouble with molarity. What is the molarity of a KCl solution made by diluting 75.0 mL of a 0.200 M solution to a
1. 2 answers
2. asked by Madison
3. 3,200 views
a tennis player swings her 1000g racket with a speed of 6.00 m/s. she hits a 60g tennis ball that was approaching her at a speed
1. 3 answers
2. asked by Anonymous
3. 3,099 views
A pilot wishes to fly 450 km due south in 3 hours. A wind is blowing from the west at 50 km/hr. By means of a vector diagram,
1. 1 answer
2. asked by Shayne
3. 3,088 views
the terminal side of an angle theta in standard position coincides with the line y=5x and lies in quadrant 3. find the six
1. 3 answers
2. asked by meg
3. 2,915 views
The heat of vaporization of liquid water at 373 K is 40.7 kJ/mol. The value of the enthalpy change when 2.00 g of steam
1. 1 answer
2. asked by Anonymous
3. 2,580 views
Suppose you roll a bowling ball at 2.5 m/s across the roof of a flat building. It leaves the edge and strikes the ground 2.0 s
1. 1 answer
2. asked by Katie
3. 2,474 views
Results of a survey of fifty students indicate that 30 like red jelly beans, 29 like green jelly beans, and 17 likeboth red and
1. 3 answers
2. asked by Anonymous
3. 2,302 views
Mrs. Bollo's second grade class of thirty students conducted a pet ownership survey. Results of the surveyindicate that 8
1. 3 answers
2. asked by eric
3. 2,301 views
Can a triangle have sides with the given lengths? Explain.15) 8cm, 7cm, 9cm 16) 7ft, 13ft, 6ft 17) 20in, 18in, 16in 18) 3m, 11m,
1. 2 answers
2. asked by Hannah
3. 2,167 views
A 0.20 M sodium chlorobenzoate (NaC7H4ClO2) solution has a pH of 8.65. Calculate the pH of a 0.19 M chlorobenzoic acid
1. 1 answer
2. asked by justin
3. 2,160 views
how long will it take to earn $525 in interest if $3500 is invested at 6% annual interest rate ?
1. 2 answers
2. asked by teeka
3. 2,156 views
What is the greatest possible product of a 2-digit and a 1-digit number? Explain how you know
1. 3 answers
2. asked by Jasmin
3. 2,085 views
A beaker of mass 1.2 kg containing 2.1 kgof water rests on a scale. A 2.2 kg block of aluminum (of density 2700 kg/m3) suspended
1. 3 answers
2. asked by Sara
3. 2,009 views
1. State specifically how you would make a conclusive test for an iron (III) salt.2. Which test for iron (II) ions is
1. 2 answers
2. asked by Justin
3. 1,991 views
An aqueous mixture containing starch, NaCl, glucose and albumin is placed in a dialyzing bag and immersed in distilled water.
1. 1 answer
2. asked by Beth
3. 1,966 views
• Calculate the annual break-even point in dollar sales and in unit sales for Shop 48.• Prepare a CVP graph showing cost and
1. 4 answers
2. asked by Adrienne
3. 1,891 views
Two spheres A and B, where A has twice the mas of B, are projected at the same horizontal velocity off the edge of two different
1. 1 answer
2. asked by Katie
3. 1,796 views
Calculate the osmolarity of a solution that contains 0.1 M urea, 0.2 M NaCl, and 0.5 M CaCl2. Assume urea does not ionize and
1. 1 answer
2. asked by russel
3. 1,785 views
What is the pH of the solution formed when 0.040mol NaOH(s) is added to 2.00L of 0.020M HCl?
1. 4 answers
2. asked by IH
3. 1,766 views
A yo-yo is made of two solid cylindrical disks, each of mass 0.053 kg and diameter 0.073 m, joined by a (concentric) thin solid
1. 2 answers
2. asked by Sasha
3. 1,717 views
Most elements are stable with eight (8) valence electrons. True or FalseElements react in order to gain, lose, or share
1. 1 answer
2. asked by samantha
3. 1,695 views
The length of a rectangular jewelry box is 5 inches more than twice the width. The perimeter is 28 inches. Find the length and
1. 2 answers
2. asked by Willie
3. 1,670 views
A projectile is launched straight upwards at 45 m/s. Three seconds later, its velocity isA. 75 m/s B. 30 m/s C. 15 m/s D. zero
1. 2 answers
2. asked by Tracey
3. 1,626 views
Which of the following species are isoelectronic? Select all that apply.1) S^2- 2) Be^2+ 3) Cl^- 4) K^+ 5) Ca^2+ 6) Se^2-
1. 2 answers
2. asked by Amy
3. 1,617 views
A spanish exchange student is trying to figure out what his friends like to eat. Provide the correct pronoun forms to complete
1. 1 answer
2. asked by Allie
3. 1,577 views
Briefly describe the main attributes of the following economic systems: market economy, centrally planned economy, and mixed
1. 2 answers
2. asked by Anita fields
3. 1,549 views
Use Opinion 5.07 and information from other research youconduct to find answers to the following questions. Explain each of your
1. 12 answers
2. asked by Huggins
3. 1,543 views
What is the gravitational force between the proton (1.67X10^-27 kg) and the electron (9.11X 10^-31 kg) in a hydrogen atom if
1. 2 answers
2. asked by Alecia
3. 1,535 views
Use the given derivative to find all critical points of 'f' and at each critical point determine whether a relative maximum,
1. 1 answer
2. asked by Roy
3. 1,522 views
Which of the following species are isoelectronic? Select all that apply.1) S^2- 2) Be^2+ 3) Cl^- 4) K^+ 5) Ca^2+ 6) Se^2-
1. 3 answers
2. asked by Amy
3. 1,516 views
The mean starting salary for graduates in the spring of 2004 was $36,280. Assume that the distribution of starting salaries
1. 2 answers
2. asked by Dave
3. 1,493 views
Natalia viajó al Perú. Escribió una lista de lo que va a hacer al volver a casa. Contesta las preguntas según la
1. 1 answer
2. asked by rafay
3. 1,492 views
In an isosceles trapezoid, the longest base is 11", a leg is 5", and the height is 4".Find the length of the shorter base of the
1. 1 answer
2. asked by gayle
3. 1,486 views
What are some similarities between the Wife of Bath's Tale and The Merchant's tale (by chaucer)?
1. 3 answers
2. asked by Anonymous
3. 1,467 views
A ball player wishes to determine her pitching speed by throwing a ball horizontally from an elevation of 3.0 m above the
1. 1 answer
2. asked by PLEASE HELP
3. 1,429 views
In a Word document, write a narrative paragraph that uses dialogue. The paragraph should demonstrate your ability to use
1. 8 answers
2. asked by lakesha
3. 1,427 views
What is the decomposition of AgC2H3O2?AgC2H3O2->?
1. 1 answer
2. asked by Marie
3. 1,420 views
A company issues a 10,000 par value 10-year bond with 8% annual coupon payments. If the yield rate is 6%, calculate the price of
1. 2 answers
2. asked by Kim
3. 1,417 views
For the compound C13H18O2 (ibuprofen) determine the molecules of ibuprofen that contains 15 mol of hydrogen?I am missing a step
1. 3 answers
2. asked by TMV
3. 1,400 views
A store owner wishes to hang a sign weighing 750 N so that Cable A attached to the store makes a 30 degree angle from the
1. 1 answer
2. asked by Jim
3. 1,385 views
a sled mass 50 kg is pulled along snow-covered, flat group. the static friction coefficent is 0.30, and the sliding friction
1. 3 answers
2. asked by Alex
3. 1,344 views
Farmer Frank's pumpkin patch had 360 pumpkins and he was searching for perfect pumpkins to sell at his farm stand. As he walked
1. 3 answers
2. asked by Susan
3. 1,342 views
Use the cues below to write sentences with the verb GUSTAR.MODELO: comida italiana/Vilma = A Vilma le gusta la comida italiana.
1. 2 answers
2. asked by Allie
3. 1,299 views
HAVE CHILD COUNT THE SEA ANIMALS AND THEN DRAW COUNTERS TO SHOW HOW MANY SEA ANIMALS
1. 6 answers
2. asked by LEA
3. 1,261 views
how do you write the chemical equation for liquid pentanol (C5H12O) and gaseous oxygen ?Thanks ~Samantha~
1. 0 answers
2. asked by Samantha
3. 1,258 views
Calculate the mass of strontium hydroxide required to make a 450-mL solution with a pOH of 4.00.Step 1: Find pOH. I found that
1. 1 answer
2. asked by Anonymous
3. 1,204 views
A student studies for a statistics exam where all questions are true or false. A reputable source indicates that with studying
1. 1 answer
2. asked by Joseph
3. 1,204 views
Which of the following electron configurations is not consistent with Hund's rule?1) 1s^2 2s^2 2p^2 3s^1 2) 1s^2 2s^2 2p^6 3s^2
1. 2 answers
2. asked by David
3. 1,187 views
the total pressure of n2o4 and no2 IS 1.38 atm. if kp is 6.75(25 C) calculate partial pressure of NO2 in the mixture. 2NO2<--->
1. 5 answers
2. asked by anon
3. 1,186 views
If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92-liter solution, what is the resulting molarity?
1. 1 answer
2. asked by smith
3. 1,171 views
• Final Project: Most Significant Events• Resources: Appendix A • Write a 1,750- to 2,050-word essay in which you: 1.
1. 1 answer
2. asked by cristee
3. 1,163 views
If the morning temperature is 24degrees and the overall temperature is 7 degrees, what is the evening temperature.
1. 2 answers
2. asked by Ev
3. 1,142 views
A 7200 lb airplane lands on an aircraft carrier with a speed of 72 ft/s. The plane is caught by an elastic band (k=998 lb/ft)
1. 3 answers
2. asked by sandhu
3. 1,135 views
what is the gram formula mass of Li2SO4 ?
1. 1 answer
2. asked by Heather
3. 1,134 views
You are asked to come up with a plan to improve racial and ethnic relations in your community. What would your plan include? How
1. 13 answers
2. asked by lakesha
3. 1,130 views
A record player is spinning at 32 rpm when the motor is switched off. After 6.8 seconds the angular speed has decreased to 20
1. 0 answers
2. asked by emily
3. 1,129 views
Two dogs are pulling on opposite ends of a bone. One dog pulls to the right with a force of 50 N while the other pulls to the
1. 1 answer
2. asked by Jasper
3. 1,122 views
- A 1600-KG ELEVATOR accelerates downward at 2.00 m/s2 starting from rest. how much work does gravity do on the elevator? b) how
1. 1 answer
2. asked by Anonymous
3. 1,107 views
Are these questions below true or false? I am stuck. I think 1 is true and 3 is false1. In Regression Analysis if the variance
1. 0 answers
2. asked by Logan
3. 1,105 views
What is the verb and predicate noun or adjective in this sentence: Rennett is an extract made from the lining of a calf's fourth
1. 1 answer
2. asked by Jon
3. 1,098 views
Briefly describe the main attributes of the following economic systems: market economy, centrally planned economy, and mixed
1. 1 answer
2. asked by Anita fields
3. 1,088 views
prove identity cscx-(cosx)(cotx)=sinx
1. 1 answer
2. asked by logan
3. 1,069 views
I asked this question on last thursday and u told me that the bottom limit for the 1st and the right limit for the 2nd area is
1. 3 answers
2. asked by K
3. 1,065 views
Take the mass of the Earth to be 5.98 ×1024 kg. If the Earth’s gravitational force causes a falling 52 kg student to
1. 1 answer
2. asked by todd
3. 1,062 views
Review Conceptual Example 2 in preparation for this problem. In Figure 5.4, an object, after being released from its circular
1. 2 answers
2. asked by megan
3. 1,058 views
Which of the following is a conjugate acid-base pair?A. H2SO4, H2SO3 B. NH3, NO2 C. CH3OH, CH3COOH D. HF, H2F E. NH3, NH4+
1. 1 answer
2. asked by cs
3. 1,051 views
For the weak acid HX, what is the pH of a 0.10 M solution if the acid is 4.0% ionized?
1. 2 answers
2. asked by cs
3. 1,046 views
A physics student wants to build a spring gun that when aimed horizontally will give a 15.0- g ball an initial acceleration of
1. 0 answers
2. asked by Anonymous
3. 1,022 views
Suppose you roll a bowling ball at 2.5 m/s across the roof of a flat building. It leaves the edge and strikes the ground 2.0 s
1. 0 answers
2. asked by Tray
3. 1,016 views
An object is dropped from a hot-air balloon 1296 feet above theground. The height of the object is given by h=-16(t-9)(t+9)
1. 1 answer
2. asked by Jay
3. 1,007 views
Two masses are suspended from a pulley as shown in the figure . The pulley itself has a mass of 0.30 kg, a radius of 0.20 m, and
1. 0 answers
2. asked by Stacy
3. 1,003 views
RefrigeratorSuppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing
1. 0 answers
2. asked by BG
3. 976 views
if the diagonals of a rhombus is 12 and 16 what is the measure of a side of the rhombus 5,,20,10 square root 3
1. 1 answer
2. asked by Anonymous
3. 973 views
which formula is correctly paired with its name? 1.MgCl2 magnesium dichloride2.N2O5 dinotrogen pentoxide 3.H20 hydrogen oxide
1. 3 answers
2. asked by Anonymous
3. 972 views
A graduated cylinder containing some air is immersed in water. The height between the the water surface and the top of the water
1. 0 answers
2. asked by mmeas
3. 967 views
If current is passed in an electrolytic cell containing sodium nitrate, NaNO3, dissolved in water, what are the products at the
1. 2 answers
2. asked by James
3. 960 views
what it the complete ssubject in this sentence... Can you explain last night's homework to me?
1. 2 answers
2. asked by Kit
3. 960 views
Coroners estimate time of death using the rule of thumb that a body cools about 2 degrees F during the first hour after death
1. 0 answers
2. asked by Anonymous
3. 951 views
Spirit of Australia, a hydroplane boat, made speed records by traveling 239 miles in 0.75 hours. What is its record breaking
1. 1 answer
2. asked by cori
3. 950 views
What is the volume of 325 mL of a sample of gas at 51.0°C and 710. mm Hg if the conditions are adjusted to STP? Assume the
1. 1 answer
2. asked by Kate
3. 943 views
-Suppose you carry out TLC separation of acetaminophen and ibuprofen on silica ggel using a nonpolaar developing solvent. which
1. 1 answer
2. asked by tristan
3. 941 views
What is the pH of a solution of vinegar, which is 5.00% (w/v) acetic acid (CH3COOH, Ka = 1.8 e-5).what is the % dissociation?
1. 1 answer
2. asked by cs
3. 940 views
What is the predicate noun or predicate adjective in this sentence; The thickened mass eventually becomes cheese.
1. 7 answers
2. asked by Jon
3. 934 views
The paragraph should demonstrate your ability to use sentence variety and proper punctuation. Your audience is your classmates.
1. 3 answers
2. asked by reeves
3. 906 views
Find the values of the six trigonometric functions of the angle in standard position with the terminal side passing through the
1. 1 answer
2. asked by kp
3. 903 views
a.)if a person is trying to throw and object with a mass of 2000kg, how much force must they use to lift it?b.) in throwing it,
1. 0 answers
2. asked by Anonymous
3. 895 views
Does one mile = 5280 feet?
1. 1 answer
2. asked by jill
3. 895 views
a flight attendant pulls her 75 N flight bag a distance of 325 m along a level airport floor at a constant velocity. the force
1. 1 answer
2. asked by Alex
3. 892 views
Really need help on figuring out the formula for Iron Complex.The question was: 4.0 g of ferrous ammonium sulphate,
1. 1 answer
2. asked by Nika
3. 891 views

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