The first step of the synthesis is described by the reaction below. When 2.000 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4, the theoretical yield of FeC2O42H2O is ______ grams. Fe(NH4)2(SO4)26H2O(s) + H2C2O4(aq)--> FeC2O42H2O(s) + (NH4)2SO4(aq) + H2SO4(aq...
April 15, 2008
The correct interpretation of the equation below is: Fe3+(aq) + SCN(aq) --> and <-- FeSCN2+(aq) A. A heterogeneous equilibrium exists because of the charged ions. B. At equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. C. The ...
April 9, 2008
(A) A student performed the freezing point depression experiment according to directions but mistakenly recorded the mass of lauric acid as 8.300 g instead of 8.003 g. The calculated molar mass of the unknown acid will be ___________ than the true value, because the mass of ...
April 4, 2008
An entry level position pays 8 dollars per hour. A 4% raise is given at the end of each year of employment. What would the pay be after 3 years? My mom tried to help me and she got 8.998912 which we figured would round to 9 dollars. When i reworked the problem i got 8.96. Does...
February 2, 2008
math(EASY BUT CHECKING)
for a spinner numbered one to ten, all outcomes are equally likely. What is the probability of getting a factor of six? I thought it might be 4/10 or 2/5 because i think a factor is a number that can go into another one. I often confuse those with multiples so if someone knows...
February 2, 2008
Math Quantitive Reasoning
The amount of Jen's monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $12. What percentage of her phone bills are between $14 and $86?
December 2, 2007
Rate of change
I have some questions that I would like you to check please. Thanxs! Find the slope then describe what it means in terms of the rate of change of the dependent variable per unit change in the independent variable. 1. The linear function f(x)=4.6x+37 represents the percentage ...
September 1, 2007
The only part of the height equation that we have not discussed is the constant. You have probably noticed that the constant is always equal to the initial height of the ball (80 m in our previous exercises). Now, lets have you develop a height equation. A ball is thrown...
July 18, 2007
In the book Lord of the Flies what is the irony of Samneric's behavior? www.sparknotes.com/lit This is a good place to look up information about a variety of books normally used in classrooms across the country and abroad. You might check out the characters in the ...
July 15, 2007
In Lord of the Flies, why is Percival unable to remember his name and address? Also here: http://www.novelguide.com/novellist.asp?sortby=Title&char=L and here: http://en.wikipedia.org/wiki/Lord_of_the_flies
July 15, 2007
i sorda know how to do this problem, but i am gonna ask anyway. ADDITIONAL INFO: consider a regular deck of cards without the jokers. Cards are replaced after each draw. Find the probability of each of the following. QUESTION: P(pair of red kings) wow thats a hard one i have ...
March 22, 2007
problem: Dena borrowed $7500 to buy a used car. The credit union charged 9%(percent it looks kind of funny) simple intrest per year. She paid $2025 in interest. For what period of time did she borrow the money. It would be 3 years. Get how much they charge her per year which ...
February 5, 2007
What is a unit rate? what is the prime factorazation for 945? idk how to do this 10= 15= GCF= i need help with my prime factorization homework what is a prime factorazation i meed held on my homework how do u determine if the numbers are prime or composite
December 12, 2006
what is an inverse relationship? explain the relationship between the density of a planet and the distance the planet is from the sun "what is an inverse relationship? explain the relationship between the density of a planet and the distance the planet is from the sun.&...
November 16, 2006
If you swim 2 miles in 40 minutes, what is the unit rate? If you use distance=rate*time, then rate =distance/time So 2mi/40min or simplifying to 1 mi per 20min Can you convert this to mile per hour?
October 14, 2006
What is the science of measurement 9 letter word. Thanks, Lindsey Hi there, I was able to find the answer online by typing "science of measurement" in quotes into the google search engine. I hope that helps. Thanks I had done that but without the quotetion marks. ...
September 4, 2006
Something times something equals 97 Are you supposed to factor 97 as the product of integers? We need a little more info to help you. If you are expecting integer results, wait no more as 97 is a prime number. Therefore, no two integers have a product of 97. If you are not ...
August 29, 2006
Something plus something equals 97 You have many combinations of whole numbers that answers your question. 1 + 96 2 + 95 3 + 94 etc, etc. or -- x + y = 97 There are 48 pairs of numbers that sum to 97. Do you have another constraint that would identify the unique answer you ...
August 29, 2006