Friday
December 2, 2016

# Posts by Silvia

Total # Posts: 30

Chemistry
In an aqueous solution containing a mixture of Zn2+and Mg2+, how would you determine their contents by means of EDTA titration?
November 21, 2016

math
using parentheses to make each number sentence true .. 8x9-2-3 equals 32
October 4, 2016

Math
Two numbers. The first plus twice the second equals 11. Twice the first plus three times the second equals 50. What are the numbers?
January 18, 2016

Math
Ah, so it's A, 9?
January 16, 2016

Math
The math club had a lunch meeting where the attendees ordered either a hamburger for \$2.50 or chicken strips for \$3.25. The bill for the 25 lunches was \$74.50. The system of equations below represents this situation. 2.50x + 3.25y = 74.50 --------------------- x + y = 25 How ...
January 16, 2016

chem
what is [Ag^+] in a solution formed by mixing 25.0 ml of 0.10 M AgNO3 with 50.0 ml of 1.50 M Na3PO4. Ksp for Ag3PO4=1.0x10^-21
November 17, 2015

chem
the tsp of magnesium fluoride is 3.7x10^-8.When 400.0 ml of 0.600 M NaF is mixed with 600. ml of 0.217 M Mg(NO3)2, a precipitate forms. (a) what mass of megangsim fluoride(M MASS=62.30g/mol) is produced ? (b) what will be the equilibrium concentrations go Mg^2+ and F^- in the ...
November 17, 2015

math
3/5 of the people at a funfair were children. 3/4 of the remaining people were men. There were 140 more children than women. How many people went to the funfair?
March 20, 2015

Literature-Help me Ms. Sue
2. Sojourner's vision of God is an example of a/an A. myth. B. exterior narrative. C. epiphany. D. simile. Student Answer: A Answer: Incorrect Reference: 4. When does the Narrative of Sojourner Truth take place? A. During the Civil War B. Right after the Emancipation ...
July 3, 2014

hct
convert 50 years into a second
June 12, 2014

hct
You add 8.2g of iron to 25.40mL of water and observe that the volume of iron and water together is 26.44mL . Calculate the density of iron.
June 11, 2014

Math
How do I calculate the monthly payment required to repay a \$250,000 loan in 15 years at 5.75% interest compounded monthly?
April 22, 2014

Quantitative Analysis for Business
The ages of a group of 50 women are approximately normally distributed with a mean of 48 years and a standard deviation of 5 years. One women is randomly selected from the group, and her age is observed. A) Find the probability that her age will fall between 56 and 60 years. B...
May 14, 2013

Math
a. 4/(4+8)= 4/12 = 1/3 => 33,3% b. 4/(4+7)= 4/11 => 36,4%
November 24, 2012

micro economics
Frank owns a soda fountain and sells milkshakes. he sells 50 milkshakes per day for \$5 each. his daily cost is \$290, of which \$30 is fixed cost. what can you say about Franks short run decision regarding shut down and his long run decision regarding exit? please help me out !
April 5, 2012

micro economics
1) Assume that the gold-mining industry is competitive. a) Illustrate a long-run equilibrium using diagrams for the gold market and for the a representative gold mine. b) Suppose that an increase in jewellery demand induces a a surge for in the demand for gold. Using your ...
April 5, 2012

Frank owns a soda fountain and sells milkshakes. he sells 50 milkshakes per day for \$5 each. his daily total cost is \$290, of which \$30 is fixed cost. What can you say about Franks short run decision regarding shut down and long run decision regarding exit?
April 5, 2012

astronomy/physics
Mercury has a semi-major axis of 0.367AU and an eccentricity of e=0.206. Calculate its distance to the Sun at perihelion. Remember to use units of AU in your answer.
December 5, 2011

Geometry
A toddler’s playground has two slides on either side. The slide on the left is situated at a 45° angle to the ground and is 68 centimeters away from the base of the playground. The slide on the right is positioned at a 30° angle to the ground and is 112 ...
December 4, 2011

Geometry
A ladder leans against a house at a 60° angle to the ground. If the ladder extends to a length of 132 inches, what is the height of the house to the nearest hundredth of an inch?
December 1, 2011

astronomy/physics
Use Newton’s Law of Gravity to calculate the force of gravity between a 39 kg person and Earth.
December 1, 2011

HCA430
Which has a greater influence on a person’s health: individual choices and actions (micro perspective) or community policies and resource availability (macro perspective)? Discuss three reasons why you selected one over the other. Your initial post should be 250-300 words...
July 20, 2011

Physics
0 if you add 0 to c you get the same vector.
January 20, 2011

the debate club needs \$240.00 to attend a debate tournament. the club decides to sell iced tea and lemonade at baseball games. iced tea will be sold for \$.50 per cup and lemonade will be sold for \$.80 per cup. write the equation to find how many cups of each beverag must be ...
March 10, 2010

grammar
in order to write sentences that are correct in srtucture is this a fragment run-on sentence
December 9, 2009

21+8(v+3)+3+7v?
May 20, 2009

HHS 225
1.what have been the most significant changes in health and human services over the past fifty years? 2. How has society responsibility to individual needs changed in the last ten years? 3. Who should determine health and human services need? 4. What should the role of health ...
September 23, 2008

social studies
what substance was used to stuff the nostrils?
November 16, 2007

PHYSICS - VERYYYY IMPORTANT!!!
VERY IMPORTANT FOR A PHYSICS PRESENTATION.. PLEASE HELP & EXPLAIN CLEARLY??? THANKS SO MUCH! (a) why is the centripetal force neede to keep a body moving in a circular path? (b) In what direction does a centripetal force accelerate the body on whic it acts?? (c) Upon what ...
January 14, 2007

social studies
what is a roman grinding mill i need an answer by today! do tommorrow PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!! you have to do it your self!11 http://www.si.umich.edu/CHICO/AncientFood/romanfood.html I am not certain of the point. A Roman grinding mill was a grinding mill. The above...
July 27, 2005

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