you just answered a question for me, but the following are my answers to choose from. it was the 2nd question that I posted. about hydrocloric acid solution mixing with sodium bicarbonate. So, my answers to choose from are gas evolution, precipitation, acid-base neutralization...
Friday, November 20, 2009 at 4:52pm
Thank you for taking the time to respond. I am in the 5th grade. However word problems are a problem. On my homework sheet it says, Strategies Used.... Visual Thinking... My soloution First I... Then I... Next I... After that I... Finally I... My answer is... I think my answer...
Monday, November 16, 2009 at 12:16am
The height of a rocket fired vertically into the air from the ground is given by the formula h(t) = -16t (2nd power) + 384t + 4, where t is measured in seconds. How long will it take to reach its maximum height and what is the maximum height reached by the rocket
Monday, November 9, 2009 at 9:45am
- (-4)3rd power + (-3)2nd power - .5 3rd power is 72.875 correct? The 4 is negative because its to the 3rd power, but the negative before it makes it positive, am I right? thanks
Tuesday, November 3, 2009 at 9:13pm
9th grade Spanish
Write a letter to a new pen pal. Hola, Yo me llamo Claire y you tengo 14 anos. Yo tengo dos hermanas. Ellos tienen 16 y 11 anos. Ellos se llaman Erica y Amelia. Me gusta la pizza y el chocolate. No me gusta huevos. Que te gusta comer? Yo me gusta eschuchar el radio y dormir. ...
Thursday, October 22, 2009 at 4:14am
A 12.0 kg shell is launched at an angle of 55 degrees above the horizon with an initial velocity of 150 m/s. When at its highest point, the shell explodes into 2 fragments - 1 fragments is 3 times heavier than the other. The 2 fragments reach the ground at the same time, ...
Wednesday, October 21, 2009 at 6:52pm
Between 50 and 100 grade 7 students at school are having a bbq. Each student will receive one hot dog. Hot dogs come in packages of 12 and buns in packages of 8. How many students are in grade 7, if all the packages of hot dogs and buns purchased are used up?
Tuesday, October 20, 2009 at 5:14pm
If tbone steak cost 12.00 a lb and 1st util is 48, 2nd is 42, and 3rd util is 36 and we also buy ground round at 4.00 a lb and we derive 24 utils for the 1st lb, 16 for the second and 12 for the third and all we have to spend is 40.00 then how many lbs. of t-bone and ground ...
Monday, October 19, 2009 at 10:39am
I have a Q that im trying to solve: it says: the 1st , 2nd, and 3rd term of a geo. sequence is the same as the 1st, 7th and 9th terms of an arith. sequence.: I have to find the common ratio. So i know: a+8d = a(r^2) (1) a+6d = ar (2) but i don't know how to solve this ...
Monday, October 19, 2009 at 6:29am
In a class 85% of the student recieved the highest grade in English Literature, 80% in Math, 75% in History, and 30% in Chemistry. About what percentage of the students could you say for sure that they recieved the highest grade in all 4 subjects?
Thursday, October 15, 2009 at 5:18pm
Write the two chemical equations that describe the conversion of magnesium into magnesium oxide. 2Mg(s)+O2(g)->2MgO(s?) First off, would MgO be a solid or gas? And I have no idea what the 2nd equation could be.. Can anyone give me a hint?
Tuesday, October 13, 2009 at 8:30pm
Quantum mechanics, eigenfunctions!
Determine if the function sin(x)*e^(ax) where a=constant is an eigenfunction of the operators d/dx and d^2/(dx)^2 Okay. My understanding is that you use the operator and perform its "thing" on the function. In this case, you will have to find the 1st derivative of ...
Thursday, October 8, 2009 at 9:30pm
I'm completely stuck on this question.. Trade barriers only work when..? -infant industries receive the protection. -the United States does not have a trade deficit. -American money is kept in the United States. -other countries do not use trade barriers. I want to say the...
Thursday, October 8, 2009 at 2:48pm
In a fifth grade class of 16 students, one-half of the students arrived at school early,one-fourth arrived on time, and one-eight arrived late. On that day how many were absent? Solve using comparison bars.
Wednesday, September 30, 2009 at 8:06pm
what is the precipitate formed when HCl is added? I believe the answer is NaCl, but I am not sure and this precipitate only formed in the first NaOH extract, as precipitate was essentially nonexistent in the 2nd extract? Below is what was done in the experiment. Also, does the...
Monday, September 21, 2009 at 10:38pm
list each of the activities that follow under the appropriate heading. base your decisions on whether the activity promotes or jeopardizes good health. i think i get this but . can anyone please help me on the 2nd part where it says base your decisions on whether the activity ...
Sunday, September 20, 2009 at 9:42pm
charles I and the civil war 2 1642-49 name a parliamentary victory of 1644 on july 2nd 1644 when the royalist forces were busy cooking their suppers, the roundheads made a surprise attack , scattered the royalist forces and won the vital battle of marston moor. is this right, ...
Saturday, September 19, 2009 at 10:29pm
Sue is able to make six beaded bracelets each month. If Sue begings on January 1st, how many bracelets will she be able to finish in time for the craft sale on May 2nd? What strategy might work to solve this problem
Thursday, September 17, 2009 at 10:19pm
A student threw a ball directly upward from the balcony of a building. The height of the ball as measured from the ground "t" seconds after it was thrown, is given by the expression h= -16t(2nd power) + 64t + 768 When does the ball reach the ground?
Monday, September 14, 2009 at 1:25pm
My teacher is averaging up our grades in one area instead of including them all on our report card. For example, he is putting in one grade for the tests (the average of the grades) instead of including each individual grade for all of the tests. Are these two the same thing, ...
Tuesday, September 8, 2009 at 3:48pm
1. - What's wrong? - I have an important exam tomorrow. - Don't worry too much. (Is the short dialogue grammatical?) 2. Food also can help people's feelings. 3. Food can also help people's feelings. (Which one is correct between 2 and 3? Are both OK?) 4. You ...
Monday, September 7, 2009 at 6:02am
i am wanting to make sure this is correct. the complete subject and the simple subjects of the following. The two-and-a-half-month-old child received 2nd degree burns across the bridge of his nose. Complete: The two-and-a-half-month-old child simple is child? It was suggested ...
Tuesday, August 11, 2009 at 2:53pm
What percent by mass does the water constitute in Na2SO4*10H2O? Determine the formula for the hydrate of cobalt (II) acetate from the following data. Mass of crucible and lid= 28.945g Mass of crucible, lid, and hydrate= 29.986g Mass of crucuble, lid, and anhydrous salt= 29....
Sunday, August 2, 2009 at 7:48pm
Sara sets up an experiment with a control group and an experimental group to study how reading to preschool children may improve their first-grade reading achievement scores. In her study, the independent variable will be a. first- grade reading achievement scores. b. reading ...
Saturday, July 4, 2009 at 6:04pm