Tuesday

October 13, 2015
Total # Posts: 339

**Chemistry**

A 156.5 g piece of stainless steel was heated to 510 C and quickly added to 25.11 g of ice at -30 C in a well-insulated flask that was immediately sealed. What will be the final temperature of the system if there is no loss of energy to the surroundings? How much liquid will ...
*October 26, 2008*

**Chemistry**

A 156.5 g piece of stainless steel was heated to 510 C and quickly added to 25.11 g of ice at -30 C in a well-insulated flask that was immediately sealed. What will be the final temperature of the system if there is no loss of energy to the surroundings? Does anyone know how I...
*October 26, 2008*

**spanish**

feliz yo cumpleanos estoy cuando es mi
*October 7, 2008*

**chemistry**

I did a lab in chemistry in which 15-mL jumbo Beral pipets with acetone was heated in boiling water until all of the liquid evaporated. Then the pipets were placed into room temperature water so that the evaporated liquid turns into condensed vapor. The molar mass was later ...
*September 24, 2008*

**6gr math**

78+m=
*September 8, 2008*

**math**

can not unscramble this math word sserwmt
*September 4, 2008*

**Math**

can not unscramble this math word mmttuoaeive
*September 4, 2008*

**Science**

What does copper react with when heated and what is formed as a result? (When you put copper underneath a fire, would the copper be reacting with oxygen or carbon dioxide?)
*September 1, 2008*

**Algebra**

The answer is 1:30 AM Thank You
*July 27, 2008*

**Algebra**

Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling 40 miles per hour. Train B is traveling 48 miles an hour. Train A passes a station at 10:25 pm. If train B passes the same station at 10:55 pm, at what time will train B catch up with ...
*July 27, 2008*

**Algebra**

In 1992, the life expectancy of males in a certain country was 69.8 years. In 1999, it was 72.6 years. Let E represent life expectancy in year t, and let t represent the numbers of years since 1992.
*July 27, 2008*

**chemistry**

whata the period block and group in which elements with the following electron configuration is located? a) [Ne] 3s^23p^4 b) [Kr] 4d^105s^25p^2 c) [Xe] 4f^145d^106s^26p^5
*May 20, 2008*

**algebra**

radicals
*May 11, 2008*

**Math**

SO how many mins. are in 900 s
*April 26, 2008*

**math**

thank you for the website it really helped me on my homework
*March 13, 2008*

**math**

an acute angle has how many degrees in it and how many degrees are in an obtuse angle
*March 13, 2008*

**math**

the square root of 1000 divided by 2 then multiplied by 100 to the fith power then minus 6 then timed by two equals?
*March 13, 2008*

**language arts**

what did john f Kennedy do as president?
*March 13, 2008*

**algebra II**

how do I work a exponential and logarithmic function on a TI83?
*February 5, 2008*

**physics 2**

a metallic object is given a positive charge by induction, does the mass change (increase, decrease, same)? what if given a negative charge instead? I think protons has more mass so mass increases and the opposite is true for electrons. Am I right?
*February 3, 2008*

**math**

y = ax + b, if the slope of the line is 1, what is the acute angle between the line and the x-axis?
*January 28, 2008*

**algebra**

a new parking lothas spaces for 450 cars. the ratio of spaces for fullsized cars to compact cars is 11 to 4. how many spaces are for full-sized cars? how many spaces for compact cars?
*December 12, 2007*

**Social Studies: Jim Crow Laws**

How did Jim Crow laws affect the economy?
*December 9, 2007*

**SCI 275**

I chose raw carrots as my vegetable. According to the chart, the energy gained compared to the energy lost was 10% gained to 90% lost. I would say this is clear evidence that humans need to consume foods closer to the bottom of the food chain so a higher amount of the original...
*November 12, 2007*

**UOP**

how do I punctuate this sentence? The goose bit the mailman on the leg.
*October 22, 2007*

**Math question**

How many 3by3 tile would it take to install a 12by18 floor.
*September 22, 2007*

**math**

sqrt of x-1=x-3 square both sides. Gather terms, factor or use the quadratic equation. I will be happy to critique your work.
*July 8, 2007*

**math**

(2x^sqrt of 2x)(3^sqrt of 5x)
*July 8, 2007*

**Electrochemistry**

A current of 2.50 A is passed through a solution containing Cu+2 ions for 4.00 hours. Calculate the mass of Cu atoms that form at the cathode. Charge= current*time Convert the charge in coulombs to number of electrons. Since it takes two electrons per Cu+2 atom, divide the ...
*May 17, 2007*

**Electrochemistry**

How much electric charge is needed to produce 1.000kg of Na metal from the Na+ ions in NaCl? You need one electron per atom. How many atoms are present in 1kg of Na? Use avagradros number. To change to coulombs, remember that 1 electron= 1.6E-19C
*May 17, 2007*

**tkngaspreureime**

unscramble these 14 letters to make two words--tkngasprureime
*April 19, 2007*

**unscramble letters**

unscramble 14 letters to make two words
*April 19, 2007*

**PLEASE HELP SOLVE RIDDLE**

1,3,4,6 = 24 USE NUMBERS ONCE YOU CAN + / * OR -.
*March 23, 2007*

**theology**

human reason wedded to truth Is this a question? Are we supposed to somehow metaphysically know the question associated with this? Do you have any thinking on this matter? The "truth" is "human" and "reason" are very seldom associated much less &...
*March 22, 2007*

**Science**

Describe the climate and physical characteristics of that biome and the types of organisms that live within it. Give examples of and describe symbiotic relationships between those organisms. Be sure to include at least one example from each of the following: parasitism, ...
*February 13, 2007*

**math**

For a dried flower arrangement, customers can choose from 2 types of containers, 3 sample designs, and 2 sizes. How many different arrangments does the shop offer? please post if possible in the by midnight tonight. Thank you
*January 23, 2007*

**Math [Probability]**

I'm in a Grade 12 Data Management Course. The Current unit is Factorials and Permutations. I'm having a trouble with this question. The answer is suppose to be 120 but I dont know how. How many different ways can 6 people be seated at a round table? Explain your ...
*September 10, 2006*

**math**

I need to know how to calculate what percentage of a number is to another. let me make that clearer, 35 is what percent of 48? how is that calculated? What you are asking is this: 35 is to 45 as x is to 100 or 35/48=x/100 solve for x x=.729 Now to get % you must multiply x by ...
*August 21, 2005*

**unscrambling word**

can not unscramble this math word mmttuoaeive
*June 14, 2005*