Carter
Popular questions and responses by Carter
Chemistry
1. A small piece of zinc reacts with dilute HCl to form H2, which is collected over water at 16°C into a large flask. The total pressure is adjusted to barometric pressure (752 torr), and the volume is 1538 mL. Use Table 5.2 to help calculate the partial
asked on October 18, 2010 
Trigonometry help
If sin(x) = 1/3 and sec(y) = 13/12 , where x and y lie between 0 and π/2, evaluate the expression using trigonometric identities. (Enter an exact answer.) sin(x + y)
asked on August 30, 2011 
Math check, please
A cube has a side length of x feet. Which expression represents the surface area of the cube? 4x square units 24x square units x'2 square units 6x'2 square units *** Find the surface area of the cylinder that has a height of 15 cm and a diameter of 2 cm.
asked on April 17, 2016 
financial litercy
a sales manager has weekends off and 20 paid vacation days per year, including holidays that fall on weekdays. if her salary is $93,600 per year, what is her pay per weekday?
asked on September 18, 2013 
Math
Find the inverses of each of the functions below algebraically. p(r)=2r^2+2r−1 3y+5x=18
asked on February 2, 2016 
Math  Check
2. A cube has a side length of x feet. Which expression represents the surface area of the cube? 4x square units 24x square units x'2 square units 6x'2 square units *** 3. Find the surface area of the cylinder that has a height of 15 cm and a diameter of 2
asked on April 17, 2016 
Chemistry
Consider the following balanced equation: 2N2H4(g)+N2O4(g)→3N2(g)+4H2O(g) Complete the following table showing the appropriate number of moles of reactants and products. If the number of moles of a reactant is provided, fill in the required amount of the
asked on March 5, 2014 
Science
What vocabulary term causes iron to rust
asked on February 19, 2013 
chemistry
How does an ionic bond form between zinc and oxygen? Zn has two electrons in its outside shell and wants to lose those two. Oxygen has six electrons in its outside shell and wants eight; therefore, oxygen takes the two electrons form Zn making the Zn with
asked on November 20, 2006 
Social Studies
What was a primary challenge faced by the Jamestown colonists during the first few years? a.They chose an unsecure location b.They lacked knowlede c.They faced fierce trading competition from the French and Dutch. d.All of the crops they grew had to be
asked on August 31, 2016 
Chemistry
What mass of lithium (in g) is required to react completely with 57.5mL of N2 gas at STP? Lithium reacts with nitrogen gas according to the following reaction: 6Li(s)+N2(g)→2Li3N(s)
asked on March 19, 2014 
chemistry
does chlorine or carbon have greater ionization energy? I would expect it to be harder to pull an electron away from 17 + charges on chlorine than 6+ charges on carbon; although the outer electron is farther away in Cl. You can look these things up in a
asked on December 16, 2006 
chemistry
How do you compare and contrast a chemical equation and an ionic equation? Is a chemical equation any equation while an ionic equation deals with the gain/loss of electrons? A chemical equation usually consists of what I call a molecular equation whereas
asked on December 15, 2006 
Math
24 students in class. 3/6 are boys. How many boys are there in this class?
asked on February 22, 2016 
Math
For each of the functions below, state the domain and range, the restrictions, the intervals of increasing and decreasing, the roots, yintercepts, and vertices. b) f(x)=+squareroot x−2
asked on February 6, 2016 
Math CAN SOMEONE ANSWER MY QUESTION
The point (1,2) is on the graph of f(x). Describe the following transformations on f(x), and determine the resulting point. a) g(x)=2f(x)+3 b) g(x)=f(x+1)−3 c) g(x)=−f(2x) d) g(x)=−f(−x−1)+3
asked on February 3, 2016 
Math
The point (1,2) is on the graph of f(x). Describe the following transformations on f(x), and determine the resulting point. Question 5 options: a) g(x)=2f(x)+3 b) g(x)=f(x+1)−3 c) g(x)=−f(2x) d) g(x)=−f(−x−1)+3
asked on February 3, 2016 
Chemistry
A concentration cell consists of two Sn/Sn2+ electrodes. The electrolyte in compartment A is 0.16 M Sn(NO3)2. The electrolyte in B is 0.86 M Sn(NO3)2. Which electrode is the cathode? What is the voltage of the cell? (Answer with two significant figures.)
asked on May 4, 2015 
Physics
A 75 kg skier starts at rest on top of a icy inclined plane (with a 30 degree angle to the ground). He ends up going past the inclined plane and onto a flat ground. And comes to a rest. The coefficient of friction is .100. How long does it take for the
asked on November 28, 2013 
Math
Verify the identities by transforming the lefthand side into the righthand side. Show work. (tan^2X)/(1cos^2x)= sec^2x HELP
asked on February 26, 2012 
Math
Kevin has a rabbit, a ferret, a gerbil and a turtle. He feeds them in a different order each day. In how many different orders can Kevin feed his pets?
asked on September 29, 2011 
chemistry
What are the acids and bases of the following salts? Na3PO4 PbS KIO3 Do you meant on dissociation? phosphoric acid, sodium hydroxide lead hydroxide, hydrogen sulfuric potasslim hydroxide, idoic acid. I am not certain of your question.
asked on May 19, 2007 
chemistry
I cannot figure out how to work this stoichiometry problem with the given equation: Mg+2HCl>MgCl2+H2 What volume of hydrogen is produced from the reaction of 50.0g of Mg and the equivalent of 75g of HCl What do you not understand about it? It is a
asked on February 5, 2007 
chemistry
How much does 1 molecule of bromine weigh? I know the atomic mass for bromine is 79.90 g but I do not know how to use it to figure out the weight of the molecule. The given answer is 2.654x10^22 but I do not know how to get there. First, the molecule of
asked on January 10, 2007 
chemistry
What instrument is used to determine the mass and relative ambuandaces of small atomic particles? You may be thinking of the mass spectrometer. I'm not sure how small you are talking about but the mass spec is used to determine atomic masses and relative
asked on September 26, 2006 
Math
Solve by substitution :addition, substration or multiplication 2X+10Y=2 and 3X5Y=17 X= Y=
asked on March 23, 2017 
Math
Solve by substitution :addition, substration or multiplication 4X+3Y=19 and 6X+3Y=33 X= Y=
asked on March 23, 2017 
Math
Solve by substitution :addition, substration or multiplication 2X+2Y=2 and 3X2Y=12 X= Y=
asked on March 23, 2017 
math
solve by substitution: addition, subtraction or multiplication. 3X+Y11 and 2X+Y=1 X= Y=
asked on March 23, 2017 
Math
2X3Y=24 and X+6Y=18 X= Y=
asked on March 23, 2017 
Math
3X+Y11 and 2X+Y=1 X= Y=
asked on March 23, 2017 
math
(9)(+21)=
asked on March 23, 2017 
math
(18)(+11)=
asked on March 23, 2017 
math
solve for x 2/3x2/3=x/6+4/3
asked on March 8, 2017 
Maths
A rectangle lawn has perimeter of 34m. Another rectangular lawn is 2cm narrower but 2m longer than the first lawn. If A(one) and A(two) are the areas of the first and second lawn respectively and A(one):A(two)=7:6, find i)the dimension of the lawn. II)the
asked on May 12, 2016 
Maths
The area of a rectangle of width ycm is 140cm^2. If the width is reduced by 2cm, the length increases by 3cm, and the area decreases to 136cm^2 to form an equation that enables you to determine the value of Y and hence, find the diagonal of the original
asked on May 12, 2016 
Nath
2:30 thermometer read 44 degrees Celsius. It risen 3 degrees between noon and 2:30 pm and 12 degrees between 7 am and noon. What was the temp at 7 am
asked on May 3, 2016 
Cal 2
Find c>0 such that the area of the region enclosed by the parabolas y=x2−c2 and y=c2−x2 is 230.
asked on February 9, 2016 
Math
The point (1,2) is on the graph of f(x). Describe the following transformations on f(x), and determine the resulting point. a) g(x)=2f(x)+3 b) g(x)=f(x+1)−3 c) g(x)=−f(2x) d) g(x)=−f(−x−1)+3
asked on February 3, 2016 
Math Need Immediate Help????
Find the inverses of each of the functions below algebraically. a.f(x)=3y+5x=18 b.h(t)=−4.9(t+3)^2+45.8
asked on February 2, 2016 
Math
Find the inverses of each of the functions below algebraically. a.f(x)=3y+5x=18 b.h(t)=−4.9(t+3)^2+45.8
asked on February 2, 2016 
Physics
A 22kg child on a 1.75m long swing is released from rest when the swing supports make an angle of 35 degrees with the vertical. 1.What is the child's maximum potential energy? 2.Disregarding friction, find the child's theoretical speed at the lowest point.
asked on December 13, 2015 
Algebra
X+4=square root of 5
asked on September 28, 2015 
Math
a/c minus c/a
asked on September 15, 2015 
Math
If the diameter of a circle is 22 cm, what is the circumference of the circle and the area of the circle
asked on September 15, 2015 
Algebra
Simplify 0.5(4.1x+3.6y)
asked on September 3, 2015 
math
solve 8/15 a = 9/10
asked on July 26, 2015 
algebra
3x+4
asked on February 24, 2015 
Algebra!
(1) A business shipped 108 packages one day. Customers are charged $3.50 for each standarddelivery package and $7.50 for each expressdelivery package. Total shipping charges for the day were $506.00. How many of each kind of package were shipped?
asked on December 2, 2013 
Algebra!
(1) A business shipped 108 packages one day. Customers are charged $3.50 for each standarddelivery package and $7.50 for each expressdelivery package. Total shipping charges for the day were $506.00. How many of each kind of package were shipped?
asked on December 2, 2013 
chemistry
Calculate the change in entropy (ΔS˚) of reaction (J/K) for the equation as written. BaCO3(s) → BaO(s) + CO2(g) Table: S° (J/(K mol)) BaCO3(s) = 112 BaO(s) = 70.3 CO2(g) = 213.7 So the answer is 41.7 I thought to find the entropy of reaction you
asked on February 23, 2013 
calculus
Find critical points of f, and the extrema of f on the given interval. a)f(x) = x^410x^2; [0,3] b)f(x) = (x/e^x); [0,2]
asked on November 4, 2012 
math
1/3 + 5/14 divided by 5/7 Any help?
asked on September 26, 2012 
chemistry
a 1.00g sample of water is allowed to vaporize completely in a 10.0L container. What is the pressure of the water vapor at 150 degrees celsius?
asked on April 29, 2012 
physics
A boulder in a river has weight of 65N. It displaces a volume of water with a weight of 10N. Which is the net force on this rock? 55 N down 65 N down 75 N up 75 N down
asked on April 17, 2012 
trig
Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trigonometric functions of t whenever possible. 2pi 3pi/4 5pi/6 Three questions. I think those are supposed to be t.
asked on February 26, 2012 
trig
If csc theta = 2, then what is theta approximated to 4 decimal points? RADIANS
asked on February 26, 2012 
4th grade math
how do I find the mean of 92;96;99;103;88
asked on October 12, 2011 
u.s history
What type of change did franklin d. Roosevelt bring?
asked on May 23, 2011 
Literature/The Crucible
Because proctor did not know the 6th commandment, then what happen?
asked on October 28, 2010 
Chemistry
When 0.526 L of Ar at 1.20 atm and 227°C is mixed with 0.270 L of O2 at 501 torr and 127°C in a 400. mL flask at 27°C, what is the pressure in the flask?
asked on October 18, 2010 
criminal justice
how do defense attorneys deal with the moral dilemma of representing people they know are guilty?
asked on September 19, 2010 
HISTORY
Why should a political system be unitary, federal, or confederal? If the U.S. were to have another constitutional convention, would we keep a federal system or change it?
asked on August 8, 2010 
chemistry
What will happen to the volume of a gas in a closed container if you increase the external pressure when the temperature remains constant?
asked on April 28, 2010 
math
Use linear combinations to solve the system 3x − y = −4 −6x + y = 34 The value of x is The value of y is
asked on April 6, 2010 
math
A passenger in an airplane flying at an alti tude of 14 kilometers sees two towns directly to the left of the plane. The angles of depres sion to the towns are 30◦ and 52◦. How far apart are the towns? Answer in units of ft.
asked on April 6, 2010 
Biology and Graphing (Stats)
i need to make a graph on excel.. my data involve putting goldfish (from the same tank and same type) into 3 different environments : acidic, neutral (control), and basic. What kind of graph should I use? just a line graph? but then what should my
asked on March 24, 2010 
math story problems
Petra bought gasoline when the odometer read 15,345.4. After the next filling, the odometer read 15665.6. It took 13.4 gal to fill the tank. a) How many miles did she drive? b) How many miles per gallon (mpg) did the car get?
asked on November 15, 2009 
MATH
a) Multiply and simplify using fractions 3 5  *  5 7 b)Convert your answer to a decimal. thank you for the help.
asked on November 15, 2009 
cal
If sin(x) = 1/3 and sec(y) = 13/12 , where x and y lie between 0 and π/2, evaluate the expression using trigonometric identities. (Enter an exact answer.) sin(x + y)
asked on August 29, 2011 
chemistry
What is the acid and base whose reaction will produce the salt Na3PO4? What is the acid and base whose reaction will produce the salt PbS? What is the acid and base whose reaction will produce the salt KIO3? phosphoric acid, sodum hydroxide lead hydroxide,
asked on May 20, 2007 
chemistry
What are the acids and bases of the following salts? Na3PO4 PbS KIO3
asked on May 19, 2007 
economics
If the reserve requirement is 20% and a bank doesn't have excess reserves, why would a $100 deposit lead to a greater than $100 increase in the money supply? Interest?
asked on May 6, 2007 
econ.
If the reserve requirement is 20% and a bank doesn't have excess reserves, why would a $100 deposit lead to a greater than $100 increase in the money supply. because of the money multiplier. A $100 deposit (e.g., into a checking account) gives the bank
asked on May 6, 2007 
economics
If the reserve requirement is 20% and a bank doesn't have excess reserves, why would a $100 deposit lead to a greater than $100 increase in the money supply. answer posted above.
asked on May 6, 2007 
math
What are the following symbols used in math sequences: a sub i, n, N? ai is the ith element of the sequence n is the value of i in the term you are refering to. For instance, 3,4,5,6 a3 is 5. That term corresponds to n=3 N is the number of terms in the
asked on April 5, 2007 
chemistry
How is the way metals form ions different from the way nonmetals form ions? Think about this. When Na, a metal, becomes an ion, what must it do? It has one electron in its outside shell. When Cl, a nonmetal, forms an ion, what must it do? It has seven
asked on December 17, 2006 
chemistry
How do you name this acid? HClO2 I found the answer but now I need to know N2F4. chlorous acid dinitrogen tetrafluoride
asked on December 16, 2006 
spanish
If you told us which vocabulary you are currently studying it could help narrow down the words. can someone help me unscramble these? it's in spanish. capetlusidr tabonca tishces tconserede well, i figured out all of the above, except for "tconserede" i'm
asked on December 16, 2006 
chemistry
What is the maximum number of hybrid orbitals a carbon atom can form? Is it 4 because carbon has 4 valence electrons? yes.
asked on December 16, 2006 
chemistry
What would the formula be for barium chloride dissolved in water? BaCl2(aq)
asked on December 15, 2006 
chemistry
Does this equation need to be balanced? AlCO3 => AlO+CO2 Also, how would this equation be balanced? NiCl+O2 => Ni2O3+Cl2O5 Neither equation you have is an equation so they can't be balanced. Do you mean aluminum carbonate. That would have the formula
asked on December 14, 2006 
Math
What is the maximum slope for a bridge on an interstate? Since this is not my area of expertise, I searched Google under the key words "maximum slope interstate bridge" to get this possible source:
asked on December 11, 2006 
Shakespeare
I am having trouble finding scholarly articles/essays on issues found in King Lear. Any suggestions? First look at this site for Themes and Motifs: http://www.sparknotes.com/shakespeare/lear/ Then use a search to check articles on those themes. One is
asked on December 11, 2006 
chemistry
How does an ionic bond form between zinc and oxygen? Zn has two electrons in its outside shell and wants to give them away (which makes the next inner shell now the outer shell but is is full with eight electrons). Oxygen has six electrons in its outside
asked on November 24, 2006 
chemistry
What are the certain conditions when ionic compounds conduct an electric current? Why are ionic compounds not always used as conductors? Ionic compounds conduct an electric current when the ions are free to move about. This usally means they are in
asked on November 24, 2006 
chemistry
The more reactive an atom, the higher its potential energy. Which atom has higher potential energy, neon or fluorine? Neon is hardly reactive at all. When it reacts, it will make news. Fluorine is a very reactive element. It is very difficult to keep it
asked on November 19, 2006 
chemistry
How could you make the reaction Cu(NO3)2 + NaCO3  CuCo3+NaNO3 balanced? You have the formula for sodium carbonate wrong> Na2CO3 The carbonate ion is 2 valence, and Na is +1. Now it will balance.
asked on November 5, 2006 
chemistry
what happens when solids, liquids, and gases are heated/cooled? Most expand if heated; contract if cooled. Solids, if heated high enough will melt and the liquid may occupy less volume than the solid. Likewise, liquids, if heated high enough, will boil and
asked on October 9, 2006 
Brothers Karamazov
I do not understand why Dmitri originally doubted that Smerdyakov murdered Fyodor but later changed his mind and thought Smerdyakov murdered Fyodor. Be sure to go into www.sparknotes.com/lit and find this book under the B's  then read the section called
asked on September 14, 2006 
chemistry
How are gases and vapors different? Most use gases and vapors interchangeably. I looked up both words in my copy of Webster's and found gas listed vapor as a synonym and vapor listed gas as a synonym. However, some of the definitions for vapor listed
asked on September 9, 2006 
advanced math
How do you find the domain and range of an equation? Since this is not my area of expertise, I searched Google under the key words "domain range equation" to get these possible sources:
asked on August 28, 2006 
math/science
Since the SI unit for temperature is Kelvin, why is the Celsius scale most often used in the science labs? I don't know that it IS the most often used. For example, almost all of the calculations require changing from C to K (gas law problems, and almost
asked on August 15, 2006

History! Check my answers
14 is a
posted on February 24, 2020 
math
I’m confused
posted on December 1, 2019 
math
0.22 __ __ __0.84 how do I complete the pattern
posted on September 12, 2019 
Math (pls check my answers!!)
So what’s the answer 🤦🏻♂️
posted on September 11, 2019 
Algebra
Write your equation more clearly. It's tough to tell what you're actually asking
posted on June 27, 2019 
Science
I'm not sure what this question is asking
posted on June 17, 2019 
Physics
Not enough information. Provide more context
posted on June 13, 2019