Thursday
August 25, 2016

# Posts by hannah

Total # Posts: 3,219

College Chemistry lab
No. I'm doing the questions in my lab manual and this is all the information I have. The lab is spectroscopic analysis of spinach. Test tube 1 has 9ml of 2.0M HCl and 1 ml of .00050M FeCl3 and 10ml of KSCN. But question asks for the concentration of iron lll before the ...
October 13, 2014

College Chemistry lab
How do I Calculate the concentration of iron(lll) with absorbance measurement. Wavelength is 480nm, solution is 1 ml FeCl3 : 9ml HCl, absorption is .250A, concentration of stock FeCl3 solution is 0.00050M and stock HCl solution is 2.0M. I not sure how to use beer's law to ...
October 13, 2014

Creative Title Help
yo mama eats fish too so stop overfishing
October 12, 2014

Physics
In the system shown in the figure, suppose the block has a mass of 2.7kg , the spring has a force constant of 500N/m , and the coefficient of kinetic friction between the block and the floor is 0.18. Find the work done on the block by the spring and by friction as the block is...
October 9, 2014

Science
A,D,C,C. All right:)
October 8, 2014

Algebra
A rectangular region with one side against an existing building is to be fenced in. Assume that there is 150 ft of material available. Since one side is the building, you will use your material to construct 3 sides of the rectangle.
October 7, 2014

math
Need help! The problem is: draw all the possible rectangles with a perimeter of 26 centimeters and whole number lengths of sides for each rectangle label the lengths of two adjacent sides. Dot array homework sheet. Thanks!
October 6, 2014

Chemistry
8.78 L
October 5, 2014

math
A painter earns \$15 per hour. What is the minimum number of hours he must work to earn at least \$200? Write an inequality to represent this situation and solve. Show your work.
October 5, 2014

history
1.) describe the primary economic activity for each of the tree colonial regions: The new england colonies, the middle colonies , and the southern colonies. explain how the gephraphary of each region helped determine its economy (6 points) @mrs.sue please help
October 3, 2014

social studies
1.) contrast the up country and the low country. identifiy three diffrences between the two regions (6 points) 2.) describe the primary economic activity for each of the tree colonial regions: The new england colonies, the middle colonies , and the southern colonies. explain ...
October 3, 2014

Social Studies
1.)c 2.)a or d 3.)c 4.)a 5.)b 6.)d 7.)b 8.)a 9.)? 10.)c 11.)d 12.)b Thoes are my answeres
October 3, 2014

Social Studies
1. The leaders of the Virginia Company recruited more settlers and reorganized the colony. They allowed the new settlers to own land. Those settlers began to grow tobacco, a crop they learned about from the Indians. By 1612, Virginians were shipping tobacco to England, which ...
October 3, 2014

Math
or sir ._.
October 2, 2014

Math
yes ma'am
October 2, 2014

Math
between were erika is standing to the vertical distance from the kite is 75 meters. how high is the kite in meters a.)125 b.)100 c.)25 d.)15 My answer is c am i correct ?
October 2, 2014

Science
1.)When evaluation was first processed which of the following was used as evidence to suport the idea (1 point) a.)observations of nature**** b.)laboratory experiments c.)extensive fossil collections b.)genetic sequence 2.)a farmer sprays insecticide on his crops and notices ...
October 2, 2014

science
6. I got C 10. I got B 11. I got C
October 1, 2014

math
The area of a circle is found with the formula A =〖πr〗^2, where π represents 3.14. If a tile artist is placing tiles in a circular mosaic pattern and the area of the circle is 658 square feet, what is the approximate radius of the circle in feet? a.)10...
October 1, 2014

History
im not really sure about this oen adn i have read over and over agin what was the direct result of the Stono rebellion? a.)the passage of the slave code b.) the defeat of govern William bull c.) the exicution of the leaders of the rebelion d.) the creation of laws punish thoes...
September 30, 2014

History
thank you ms.Sue i have one more question do mine helping me ?
September 30, 2014

History
1.) why did most slave owners not want slaves to be educated? wouldn't it be they feared education would lead to revolts ?
September 30, 2014

Chemistry
Find the mass (in g) of Carbon in 2.980 g Carbon dioxide.
September 24, 2014

algebra 2
I found out that question 2 is the same equation so it can't be solved but I still need help with question 1.
September 24, 2014

algebra 2
Solve the following systems of equations. If the system cannot be solved ,state that it cannot be solved and explain why. 1.3x+y=7 3x+y=10 2. 5x-2y=-24 -4y=-48-10x
September 24, 2014

algebra. help!
i say false for 1, and for number 2 a?
September 24, 2014

algebra. help!
Is 4x-3=19 true, false, or open? Which of the following is a solution to the equation 16=4x-4? a. -5 b. -4 c. 5 d. 16
September 24, 2014

algebra. help!
is -7+9=-9+7 true false or open
September 24, 2014

English
Yes thank you!
September 24, 2014

English
The 'White House' has been home to many animals as well as presidents. (1 point) common noun proper noun compound noun collective noun
September 24, 2014

math
the expression that is equivalent to -2(x - 7).
September 23, 2014

algebra
1.Find an equation of the line that passes through (4,3) and is parallel to the line 3x-y=7. 2. Find the equation of the line through (4,3) perpendicular to the line 3x+y=7. Please show work so I know how to do it
September 23, 2014

physics
A barge is hauled along a straight-line section of canal by two horses harnessed to tow ropes and walking along the tow paths on either side of the canal. Each horse pulls with a force of 403 N at an angle of 12.9° with the centerline of the canal. Find the sum of the two ...
September 18, 2014

Algebra
Determine the value or values of d that complete the square for the expression. (a) x^2 + dx +64 (b) x^2 + dx +49/4
September 15, 2014

physics
You stand at the edge of a cliff, holding a ball out over the edge. You give the ball an initial velocity of 7.00 m/s straight up, releasing the ball when it is 17.0 m above ground level (the level of the ground at the base of the cliff). Use g = 10.0 m/s2, and neglect air ...
September 15, 2014

Science
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
September 15, 2014

Sience Plase help check my answers
September 15, 2014

Sience Plase help check my answers
1. Why do scientists use models of natural systems? (1 point) Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. Scientists use models of natural systems because they like to use art in science. ...
September 15, 2014

Algebra 2
Reed has \$6.20 in nickels and quarters. If the nickels were quarters and the quarters were nickels, he would have \$3.50 more. How many quarters does Reed have?
September 15, 2014

english
It means that if you want to apply to this nursing program you can't have any other nursing experience, because this is for first-years only.
September 15, 2014

Algebra
The cost of purchasing x meter lengths of a certain rope is: C=1/5x^2-8x+100 per rope. What is the length of the cheapest rope that can be purchased?
September 12, 2014

algebra
True or false if the statement is not true give a counterexample. 1.If a>b,and c is positive, then ac>bc? 2.if a^2=b^2,then a=b? 3. If a>b,and c is positive,then a/c>b/c?
September 12, 2014

Algebra
do I use the quadratic formula to find the two x values?
September 12, 2014

Algebra
Find the value of x for which the area is a maximum: A = 800 + 20x - 1/2x^2
September 12, 2014

A man wants to create a Japanese garden with a parabolic footbridge to cross the creek in front of his garden. The bridge needs to span 5 meters and - according to the design he has selected - is 2 meters tall at the apex. Find a quadratic model that describes the shape of the...
September 12, 2014

Chemistry
What is the volume of 1.25 lb of mercury? The density of mercury is 13.546g/mL.
September 6, 2014

physics
Two identical small spherical conductors (point charges), separated by 0.6 m, carry a total charge of 200 mu or micro CC. They repel one another with a force of 120 N. (For the universal constant k use the value 8.99 times 109 N m2/C2.) so I used q1 + q2= 200e-6C and q1*q2= Fr...
September 4, 2014

geography
The alternative for the Americas agreement of the early 2000s is primarily aimed at... A) excluding the US from Latin America B) creating a Latin America Union C) inviting foreign investment from Asia D) improving ties with the European Union Can't find this anywhere.. ...
September 2, 2014

Chemistry
So since the four of them hybridize how do I write that? Do I just show 1s2 2s2 2p3? Also for an sp carbon is this electron configuration correct: 1s orbital up and down, 2sp orbital up and up, and 2p orbital up and up?
September 1, 2014

math
find d/dx of the integral from 1 to 2x of the (sqrt t^2+1)dt at x=sqrt2 the answer is 6. but i am not sure how to find d/dx. i tried taking the integral then doing that from 1 to 2x and then taking d/dx then plugging in sqrt2 for x but it was wrong
August 22, 2014

math
August 22, 2014

math
which of the following is true about the function g(x)= 4x^2 - 3x^4? a)g is decreasing for x<1 b) g has a relative extreme value at (0,0) c)the graph of g is concave up for all x<0
August 22, 2014

calc
August 20, 2014

calc
a rectangle is inscribed in the upper half of the circle x^2+y^2=a^2 calculate the area of the largest such rectangle. So A=2xy y=sqrt(a^2-x^2)A what do I do from there?
August 20, 2014

geometry
george has been hired to paint the smtihs house. he need to be sure that his ladder reach the highest point of the house, so he decides to use his shadow method the measuring stick is 3 ft and its shadow of the house is 45 the triangles are formed similar
August 19, 2014

math
what does the polar equation r=1/(sintheta + costheta) represent? how do I do this problem
August 3, 2014

math
The base of a rectangular prism is 6 inches - 9 inches. what is the lateral area of the prism
July 16, 2014

math
A regular hexagon has sides of 5 feet. What is the area of the hexagon
July 16, 2014

math
A picture frame is 18 inches long and 8 inches tall. It is 2 inches wide on all 4 side. What is the area of the picture frame?
July 16, 2014

science
A horizontal spring-mass system has low friction, spring stiffness 210 N/m, and mass 0.6 kg. The system is released with an initial compression of the spring of 11 cm and an initial speed of the mass of 3 m/s. suppose that there is energy dissipation of 0.02 J per cycle of the...
July 16, 2014

math
A square pyramid has sides of 8 m. Each face is an equilateral triangle. What is the lateral area of the pyramid?
July 15, 2014

math
What is the equation of the line that passes through (-2, 2) and (1, -4)?
July 15, 2014

math
what is the sum from 1 to infinity of ( 3n^3 - 4n^2 + 5)/(6n^5-2n+7)
July 14, 2014

math
it says that is wrong
July 8, 2014

math
The given curve is rotated about the y-axis. Find the area of the resulting surface. y = 3 − x2, 0 ¡Ü x ¡Ü 4
July 8, 2014

physics
One mole of titanium (6 1023 atoms) has a mass of 48 grams, and its density is 4.54 grams per cubic centimeter, so the center-to-center distance between atoms is 2.60 10-10 m. You have a long thin bar of titanium, 2.4 m long, with a square cross section, 0.11 cm on a side. You...
June 26, 2014

science
A moon orbits a planet in the xy plane, as shown in the figure. You want to calculate the force on the moon by the planet at each location labeled by a letter (A,B,C,D). At each of these locations, what are (a) the unit vector r, and (b) the unit vector F in the direction of ...
June 24, 2014

physics
Match the process with the fundamental interaction responsible for this process. 1)A falling object slows down from a great speed to its terminal velocity. 2)An apple is held off the ground by the surface of a table.
June 24, 2014

Science
1) A person roller skates down a street heading east. Which of the following would be true about friction in this scenario? a; friction does not affect the skates in the scenario b; friction pulls the skates wheels eastward c; friction pulls the skates wheels downward, toward ...
May 20, 2014

Science
Ms. Sue
May 20, 2014

Science
Which of the following best describes the movement of an object at rest if no outside forces act on it? a; it will move due to inertia b; gravity will eventually cause it to move c; it will stay at rest due to inertia d; it will stay at rest due to gravity...
May 20, 2014

Math
Sam Sounds received a \$320 discount loan to purchase a stereo. The loan was offered at 16% for 90 days. Find the interest in dollars and the proceeds for the following problem.
May 20, 2014

all of Alina answers were right i got a 100 good job and thx
May 13, 2014

Chemistry
Fuel pellets are replaced in a nuclear reactor when the U-238 content drops to A. 4% B. 6% C. 50% d. 94%
May 3, 2014

algebra
X+3÷9-X^2
May 2, 2014

PHYSICS URGENT
2. A point charge of +1.0 µC is moved in the direction of an electric field, and it has a change in electric potential difference energy of 10.0 J. What was the change in electric potential difference? 1 µC = 10-6 C (Points : 1) -1.0 × 10^8 V -1.0 × 10^...
May 1, 2014

Math
There are 92 boys. There are 14 fewers girls. How many are the girls are there?
April 30, 2014

Language Arts
Nevermind, i got it. You guys are slow
April 23, 2014

Language Arts
Please check answers! Choose the type of punctuation that is missing from the following sentence It's no wonder that Mark is tired after staying up all night. A. APOSTROPHE **** B. SEMICOLON C. COLON D. HYPHEN Can't you just see the look on his face when he finds out ...
April 23, 2014

URGENT Physics help
Thanks Jerome!!!!
April 21, 2014

URGENT Physics help
Positively charged Object A is brought close to neutral Object B but does not touch it. The two objects begin to attract each other. What is this process called? (Points : 1) grounding charge polarization conduction repulsion 4. How many coulombs could be in a lightning bolt...
April 21, 2014

biology 6
the giant anteater of south america, the giant armadillo of north america, the giant pangolin of Africa and the spiny anteater of Oceania share many characteristics. They all eat ants, have long narrow snouts, few teeth and large salivary gland, yet they do not share a common ...
April 17, 2014

biology 5
which of the following is correct? A. mitosis results in 4 identical daughter cells B. meiosis is used for the production of gametes C. cells go through two series of divisions in mitosis D. daughter cells produced by meiosis contain the same number of chromosomes as the ...
April 17, 2014

biology 4
one strand of DNA could be as long as a football field if it were stretched out lengthwise. One of the factors allowing DNA to fit inside the nucleus of a cell is its ability to: A. break apart into separate genes B. extend to form very long, thick molecules C. coil tightly ...
April 17, 2014

biology 3
the curled ears of the american curl cat are caused by an autosomal dominant allele. What are the chances of a heterozygous female and a homozygous recessive male producing offspring with curled ears?
April 17, 2014

biology 2
which organelle produces proteins? A. nucleus B. lysosome C. ribosome D. Golgi body
April 17, 2014

biology
Intravenous saline injections are often given as a treatment for severe dehydration. the concentration of saline (0.9% NaCI) in these injections is that same as that present in human cells. what would happen if pure water was introduced into the the body instead of saline?
April 17, 2014

Chemistry
For number 1, I was wondering how would you exactly link the structures together? In the form of tris and trans?
April 15, 2014

Chemistry
1. How would you sketch the probable products of the reaction of the cis and trans with each reagent other than AgNO3? _____ with en _____ with NH3 ____ with KSCN cis: trans: (NOTE: What are the differences between cis and trans and its formation?) 2. How exactly would you ...
April 15, 2014

Language Arts
1. A factory might EMIT A. Pollution B. Smokestacks C. Resources 2. How do the members of Don't Be Crude make a persuasive appeal? A. By embarrassing people B. By educating people C. By encouraging people D. by making people laugh 3. What did Gina Gallant NOT have to do to...
April 14, 2014

econ
In January 2012, one US dollar was worth 50 Indian rupees. Suppose that over the next year the value of the Indian rupee decreases to 60 Indian rupees to one US dollar. Suppose also that the price level of all goods and services in India, as measured in rupees, falls 20%, so ...
April 10, 2014

physics
Astronauts in space cannot weigh themselves by standing on a bathroom scale. Instead, they determine their mass by oscillating on a large spring. Supppose an astronaut attaches one end of a large spring to her belt and the other end to a hook on the wall of the space capsule. ...
March 31, 2014

physics
A compact car has a mass of 1150 kg. Assume that the car has one spring on each wheel, that the springs are identical, and that the mass is equally distributed over the four springs. (a) What is the spring constant of each spring if the empty car bounces up and down 2.2 times ...
March 31, 2014

physics
The acceleration due to gravity on the moon is 1.62 m/s2. What is the length of a pendulum whose period on the moon matches the period of a 4.00-m-long pendulum on earth?
March 31, 2014

Math
How many possible combinations are there if a spinner with 4 sections is spun twice?
March 27, 2014

Global Studies
Oh yeah . I just re read. A?
March 27, 2014

Global Studies
Which of not following is NOT associated with El Nino? A. Fish that thrive in cold Pacific waters are driven away. B. Areas that usually have dry weather get heavy rains or are flooded C. Drought plagues certain peoples in South America D. All of the above are associated with ...
March 27, 2014