Sunday
December 21, 2014

Posts by Loretta


Total # Posts: 42

chemistry
calculate the amount of heat released when 77.0g of steam at 104.5 celsius cools to ice at 0.0 celsius. I don't understand the steps to take to solve this problem. Can someone walk me through it please?
November 12, 2014

Chemistry
if 10.0L of neon gas exerts a pressure of 125psi at 373K, what is the number of moles of gas? I don't know how to set this up. I am using ideal gas law N=PV/RT but my answer is not matching. I converted the 125psi to 8.50atm N= 8.50atm*10.0L/1 k * 373k*1 mol/1 atm * 0.0821...
November 12, 2014

Health
I believe it is the contraction phase because diastole is the relaxing phase.
November 12, 2014

Chemistry-It is correct
It is correct.
October 25, 2014

Chemistry-Help Dr. Bob
How many mL of Carbon Dioxide gas at STP are produced from the decomposition of 4.50g of Ferric Carbonate? This is How I tried to solve it..... 4.50g Fe12(CO3)3* 1 molFe2(CO3)3/291.72g Fe2(CO3)3* 3 mol CO2/1 mol Fe2(CO3)3* 22.4L CO2/1mol CO2* 1000ml of CO2/1 L of CO2 = 1036.57...
October 25, 2014

Chemistry
I just calculated it wrong. My answer should have been 1.63g of Cl2
October 25, 2014

Chemistry
How many grams of chlorine gas must react to give 4.82g of BiCl3? 2Bi(s)+3Cl2(g)→2BiCl3(s) My answer was wrong/please review and tell me where I went wrong. 4.82g BiCl3*1mol BiCl3/215.33g BiCl3*3 mol Cl2/2 mol Bicl3* 70.9g Cl2/1 mol Cl2=6.50 g Cl2
October 25, 2014

Chemistry
Thank you, that was the problem. I got the MnCl2 mixed up with the MnSO4..... Thank you for your time. I really appreciate it!!! Have a blessed night.
October 24, 2014

Chemistry
Ok, I know it is wrong, I just checked. Can someone please show me how to do this equation and where I went wrong? Thank you....
October 24, 2014

Chemistry
Can you tell me if this is correct? 1. The equation is balanced already. 45.0ml of HCl*36.46g HCl/22,400ml HCl*MnCl/2HCl*90.39g of MnCl2/1 mol MnCl2= 13.2g MnCl2
October 24, 2014

Chemistry
What mass of Manganese (II) Chloride must react with sulfuric acid to release 45.0ml of hydrogen chloride gas at STP? Please list step by step.
October 24, 2014

College math
f(x)=x^2+7 upward 8 units
March 20, 2014

math
Find the absolute value of: 27.8
January 24, 2014

math
Find the absolute value of: -18.7
January 24, 2014

math
Find the reciprocal: -212/13
January 24, 2014

math
Solve the equation using the addition property of equality. p – 1 = 4
January 24, 2014

algebra
3/7 of what number is 9?
December 21, 2013

contemporary math
Question 1. 1. Natureland Garden Center buys lawn mowers that list for $679.95 less a 30% trade discount. What is the dollar amount of the trade discount? (Points
November 22, 2013

Electricity and Electronics
Actually, CHILL...the correct answer for #15 is B, and the correct answer for #19 is C. My daughter just took this exam & she made a 100 on it.
October 3, 2013

Child development
C. parallel play
April 25, 2013

Chemistry
If I spill 100ml of a .5 M H3PO4 solution, how many grams of NaOH should be dissolved in water and added to the spill to neutralize the acid?
October 10, 2012

Chemistry
If I spill 100ml of a .5 M H3PO4 solution, how many grams of NaOH should be dissolved in water and added to the spill to neutralize the acid?
October 10, 2012

Algebra
An isotope of Glopenium disintegrates according to the formula A(t) = Ao2^-0.0345t where Ao is the initial mass of the substance and t is the time in years. If there are 2 milligrams of Glopenium now, find the number of milligrams that will be left after 35 years. Your answer ...
October 21, 2011

math
i dont know ask somebody ask your mom you stupid
September 30, 2011

Psychology
I think that it is B
July 27, 2011

algebra
While working at The Nut House you are asked to make a mixture of raisins and nuts worth $2.75/lb. You have 12 pounds of raisins worth $1.25/lb. How many pounds of nuts worth $4.00/lb should you add to the raisins to get the right-priced mix? I have no idea how to solve this. ...
April 15, 2011

ALEGBRA1
IDENTIFY THE QUADRANT FOR EACH POINT(-1,6)
April 13, 2011

math
what percent is 14 of 132
March 17, 2011

ALGEBRA
what is your down payment? 20% ($50,000) or less
March 15, 2011

Government
c the standing committees in the house and senate were the bill originated.
February 20, 2011

marketing
Please will you help me with this assignment? It is due on Friday the 20th of May 2011. Thank you very much Loretta Marshall
February 17, 2011

finance
equipment cost $20,000 and is financed over a period of five years at an interest rate of 12%...What is the monthly payment...What is the loan balance at the end of four years and how much interest will have been paid on the loan after five years?
December 1, 2010

nutrition
Case Study: Diet for a Patient with Chronic Hunger, Iron Deficiency Anemia, and Lead Poisoning Jonathan, a two-and-a-half-year-old, lives with his mother and brothers at his grandmother's house in Chicago. His mother, Anita, works at a pharmacy to support the family. ...
April 29, 2010

human resources
A process involveds drilling holes that are supposed to be 3 inches deep. If it is known that the quality cost of a hole drilled 2.95 inches deep is $5.00, what is Taguchi's quality loss function for this process?
April 19, 2010

Maths
Using the binomial theroem to estimate 6.07^2 ive got 6^2(1+0.01)^2 but im not sure if its right and i dont know where to go for here
November 29, 2009

Stat
1. P 2. NP 3. NP 4. NP 5. P 6. NP 7. P 8. P
October 25, 2009

10th grade
reduce each rational expression into lowest terms. 2y+4/3y+6
September 10, 2009

10th grade math
oh wow haha. I see. thank you!
September 10, 2009

10th grade math
Ok that's what I thought. I tried to do that. -2 x 1=-2 -2 + 1=-1 2 x 1=3 2+1=3 -1 x 2=-2 -1+2=1 I don't know what other numbers multiply to 2.
September 10, 2009

10th grade math
Never heard of diamond. I've heard of FOIL.
September 10, 2009

10th grade math
How do I factor 4x^2-12x+8? so far I took out the Greatest Common Factor. 4(x^2-3x+2) What next?
September 10, 2009

PHYSICS!!!HELP!!
The speed of a transverse wave on a string is 450 m/s, while the wavelength is 0.18m. The amplitude of the wave is 2.0mm. How much time is required for a particle of the string to move through a total distance of 1.0km? I NEED SOME HINTS TO DO IT!!!PLEASE HELP!!!THANKS!!!!!
March 2, 2008

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