Posts by Janice
Total # Posts: 295
do you add all the atomic masses.....giving you 84.004?
How do i find the moles of NaHCO3?
NaHCO3 + HCl -> NaCl+H2O+CO2 What is the normality of a sodium bi carbonate solution containing 5.08g NaHCO3 in 150 ml solution?
Thank you so much!!!
Find the molarity of a salt water solution containing 0.27 mol NaCl in 150g of H2O. My work: 0.27 mol NaCl/150 g x 1000g/1kg = 1.8 M is this correct, i wasn't really sure what to do...
When confronted with an in-flight medical emergency, pilots and crew can consult staff physicians at MedAire, an emergency facility in Tempe, Arizona. If MedAire is called, there is a 4.8 percent chance that the flight will be diverted for an immediate landing. a. Expected ...
Between 11 P.M. and midnight on Thursday night, Mystery Pizza gets an average of 4.2 telephone orders per hour. Find the probability that, a. at least 30 minutes will elapse before the next telephone order b. less than 15 minutes will elapse c. between 15 and 30 minutes will ...
Daily output of Marathon's Garyville, Lousiana, refinery is normally distributed with a mean of 232,000 barrels of crude oil per day with a standard deviation of 7,000 barrels. Find the probability of producing.. a. at least 232,000 barrels b. between 232,000 and 239,000 ...
A stone is thrown straight downward with a speed of 2.2 meter per second from a height of 28 meters. What is the speed of this stone 1 second after it is released? [Neglect air resistance.]
I have a problem. Conner's age is 4 and josh's age is 12. I need to find out how many years until conner is half of josh's age and I am not sure how to put this in equation form.
Thank you both so much. I did figure it out using that method. I thought the teacher wanted algebra, but apparently she just needed to know if we could figure out a problem if given one. Check our skills so to speak. Again, thank you both so much.
I have a problem. A theater runs 2 movies The first movie is 40 minutes long, the second is 60 minutes long. They start at 3:00. At what time will they start at the same time again? I know the answer is 5:00. I know it robably has something to do with 120 minutes somehow. I ...
conflicts between the legal and ethical issues confronting the education of english language learners.
Can media ecology be tested?
Please Simplify: Having problems with this, and have many more to do. But if I get some guidence for this one I think I will be ok! (root5)a^7/2)^4 a^3/a^8 Thank you!
I've been asked to set up a lunch meeting with a client, George Box, Monday at 2:00 p.m. at the Laquinta Hotel. She'll be taking her assistant manager who will share his ideas for a new project they're planning.
As a fundraiser students had to raise $1200. They will sell popcorn ,at the gameshistory shows that there are usually 120 bags of popcorn sold each game. how much money should they charge if they work 6 games?
as a fundraiser students had to raise $1200. They will sell popcorn,at the games history shows that there are usually 120 bags of popcorn sold each game. How much money should they charge if they work 6 games.
anser is c
Answer is A
Answer is D
answer is A
D is the answer
the defendant assumes the burden of proof
All alkalis produce hydroxide ions when dissolved in water. How do we write the chemical equation for aqueous ammonia? I see some textbooks write it as ammonia gas dissolving in water to form ammonium ions and hydroxide ions. NH3(g)+ H2O(l) ==> NH4+(aq) + OH-(aq)
An alkali is a soluble base. Is barium hydroxide an alkali?
We say that most bases are metal oxides and hydroxides, so an example of a base that is not ana oxide or hydroxide would be aqueous ammonia NH3(aq)?
1) Is chalk a mixture or a compound? 2)We say that reactive metals react with acids to give salt + hydrogen gas.Is it necessary to write "dilute acids"?
chem help please
If 720 mL of 0.0165 M aqueous Al3+ and 300 mL of 0.0567 M aqueous Ca2+ are reacted, how many mol of Br- is produced? Al2(SO4)3(aq) + 3 CaBr2(aq) → 2 AlBr3(aq) + 3 CaSO4(s) my answer was .03564 mol of Br will be produced but the real answer is .0340 mol...i do not know ...
my nephew has a homework assignment on symmetrical shapes and there is only half of the shape drawn i can help him draw the other half but i cannot identify all the names of the shapes
where can i find pictures of symmetrical shapes so that i can identify the rest of the shape
12th grade chemistry
Calculate the number of grams in the following :[149.096 g/mole] 8.55 moles of (NH4)3PO4 IT WOULD BE NICE IF I CAN GET STEP BY STEPS TO GET ANSWER !!!
I have to answer questions about Parts of a nonfiction book. example:second entry in index Where on line can I find a book that I can look in the entire book.
The gross national debt initially is equal to $2.5 trillion and the federal government then runs a defict of $100 billion: 1. What is the new level of gross national debt? 2. If 100 percent of this deficit is financed by the sales of securities to the public, what happens to ...
As a person moves away from the equator to the poles, his weight increases. Why?
Why do organisms with the widest limits of tolerance, for most factors, will be the widest distributed?
Sorry, I still do not understand why metals react more vigorously in acids than in water?
1)Are metals more reactive with water or with dilute HCl? Why? 2)Is weighing balance the same as mass balance?
Deduce the anion present in the salt. Assume that the reagent is added to simple salt: - Test: - Concentrated sulphuric acid and manganese(IV) oxide were added to the solid. On warming, a gas was evolved. It turned litmus colourless. Is there something wrong with the question?
Is it correct to say that sulphur dioxide gas will only turn moist blue litmus paper red but will not bleach it?
Concentrated sulphuric acid and manganese(IV) oxide were added to the solid. On warming a gas was evolved which turned litmus colourless. The answer is that Cl2 gas was evolved and chloride ion is present. Can you please explain the reaction that took place?
How does the presence of sodium chloride and acidic substances increase the speed of rusting? Will alkaline substances increase the speed of rusting?
Why do we store very reactive metals such as potassium and sodium in oil? What kind of oil is it?
Alloys are harder and stronger than pure metals. I saw this sentence, "Alloys make the metal harder by preventing the layers of atoms from sliding." I think it is more correct to add the word "easily" at the end of the sentence since in an alloy, it is more...
In the Periodic Table,there are some elements such as Pm (Promethium) and Cm(Curium) that do not have any relative atomic mass. Why is this so?
When we test for carbon dioxide gas, we bubble it through limewater and get a white precipitate CaCO3. What is the equation for the reaction? Is it CO2 + Ca(OH)2 --> CaCO3 + H2O
In the qualitative test for nitrate anion, the test goes like this: - Add dilute sodium hydroxide, then add a little aluminium powder. Warm. When describing the test, is it acceptable to use the word "mixture" as in "warm the mixture"? thanks.
In the qualitative test for nitrate anion, the test goes like this: - Add dilute sodium hydroxide, then add a little aluminium powder. Warm. Why do we need to warm the mixture?
If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how long would the job take if Sam, Lisa, and Tom worked together to complete it?
The relative electric charge of a proton is +1, the relative electric charge of an electron is -1 and that of neutron is 0. What is electric charge and why is it relative? Thank a lot.
The relative mass of a proton is 1 and the relative mass of a neutron is 1. 1)Why do we use the term "relative mass" instead of mass? Is it because the mass of a proton is compared to the mass of a carbon-12 atom? 2) Can we say that the relative mass of an atom is 2...
What is 25/125 in simplist form?
What is a particular economic concern of Tuvalu; and what is the relationship between Tuvalu and the economy?
What are the needs of a country with a particular economic concern, such as population, unemployment, etc? What is the relationship between the variable that you selected and the economy? What trends do you see in the data sets? Support your assertions of trends with ...
Is it possible for a small firm with a low concentration ratio to thrive and profit in an industry?
Suppose you have an industry with 20 firms and the concentration ratio is 20%. How would you describe this industry?
I am so lost can someone please help me Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 80 miles per hour and train B is traveling at 100 miles per hour. Train A passes a station at 11:15am. If train B passes the same station at ...
could you explain the difference of seen and saw.Thankyou.
actually for "where do they go" i was referring to the words hier and hier soir. Thanks. I have PC windows.
Another question on word order... for like hier soir, or hier, where do they go? Can I say... Hier soir, je suis allee au cinema. -is this correct? Cause on a test, I put it this way. or does it have to be at the end of the sentence? Je suis allee au cinema hier soir. P.S. How...
Where you usually eat? Ou tu manges d'habitude? I was wondering for asking the question, where the d'habitude goes? End of sentence? And for answering... Je manges au restaurant d'habitude. or D'habitude, je manges au restaurant. or Je manges d'habitude au ...
second question: Is "I want to go to France"....Je veux aller en France. ?
If i want to say "Is the professors are reasonable or difficult?" is it "les professeures sont raisonnables ou difficiles?" or "les professeures sont-ils raisonnables ou difficiles?" Which one is correct? Do you have to include sont-ils? Is it ...
How do you say I am hungry in the morning? Is it, J'ai faim du matin.
When I want to say this monday, can i say ce lundi? or does it have to be le lundi?
thanks a lot for your help.
Passe compose again, last time SraJMcGin, you give me 4 situations where Past particples agree in gender and number, I get that part, I want to ask for verbs that need to agree, do you always just add e or s (feminine and plural) no matter what the verb's ending is? Like ...
Passe compose: (Please forgive my accent marks) i know the past participle agrees with the subject, my text only have example for aller...je suis alle(e)...tu es alle(e)...nous sommes alle(e)s. But i am not sure for other verbs like descendre and partir... will it be je suis ...
How do you say "On my birthday...", is it "En mon anniversaire"? If i want to say "For dessert...", is it "Pour dessert..." or "Pour le dessert...", with or without the article?
What level of CSR (corporate social responsibility) does the religion Judaism fit into? Ms. Sue answered... How can you fit a religion into a CSR level? Judaism is a highly ethical religion. Me again... How can you fit religion into a CSR? I guess I want to know from their ...
How can you fit religion into a CSR? I guess I want to know from their practices what level do they fit in. Do their actions only concern about money (minimalist) or do they care about the enviroment, the future generations etc. (stewardship) Then, would you fit it into the ...
What level of CSR (corporate social responsibility) does the religion Judaism fit into?
Simplify by removing factors of 1. m^2 - 9/(m+3)^2
Since gases can be highly compressed, what must be true of the spaces between the molecules of the gas?
Iam looking for How do cameras in the courts arouse controversy about the right of privacy?
This is for my home work i go to school on line
I need some ideas on how General Motors can gain market share, what are some of the recommandations for them. Thanks.
4NH3 + 7O2 = 4NO2 + 6H2O HHOW MANY MOLES OF AMMONIA WILL BE REQUIRED TO PRODUCE 10.0 MOLES OF WATER? The equation tells you 4 mols NH3 will produce 6 mols H2O. Can you set up a proportion to make that work? For example, 2 mols NH3 would produce 3 mols H2O and 8 mols NH3 would ...
how many psi are in an atm? 14.7 lbs/in2 = 1 atm. An easy way to have your conversions checked is to go to www.google.com and type in, for example, 1 atmosphere to pounds per square inch and hit the go button.
if a+b=1 and a squared + b squared=2 what does a to the 3rd + b to the 3rd equal? If b is 1, b cubed is one. That would work for the first half, but doesn't extend to a to the 3rd+b to the 3rd and what weould 2 squard be? Thank you so much for helping Are you saying: if a+...
if a=b=1 and a^+b^=2, then what does a cubed +b cubed equal??? ok I don't know if "ok" means that you answered your own question. If both a and b = 1, any power of either a or b will still be 1. I hope this helps. Thanks for asking.
a) In raising a 4800 N piano with a pulley system, the workers note that for every 2 m of rope pulled down, the piano rises 0.3 m. Ideally, how much force is required to lift the piano? (b) If the workers actually pull with 2500 N of force to lift the piano, what is the ...
The normal boiling points of CO and SO2 are -192 degrees C and -10 degrees C, respectively A) At 25 degrees C and 1 atm, which gas would you expect to have a molar volume closest to the ideal value? B) If you reduce the deviation from ideal gas behavior, in what direction ...
I need all math factors for 2,006 2006 = 2*17*59 :)
A salesperson contacts eight potential customers per day. From past experience, we know that the probability of a potentail customer making a purchase is 0.10. a) What is the probability the salesperson will make at least two sales in a day? -Do you use binomial formula for ...
A department store has determined that 25% of all their sales are credit sales. A random sample of 75 sales is selected and the proportion of credit sales in the sample is computed. a) What is the probability that the same proportion will be greater than 0.34? In a random ...
For what values of p>0 does the series Riemann Sum [n=1 to infinity] 1/ [n(ln n) (ln(ln n))^p] converge and for what values does it diverge? You need to let the summation start at n = 3 to avoid the singularity at n = 1 (although you can formally take denominator to b ...
For what values of p>0 does the series a) Riemann Sum [n=1 to infinity] 1/ [n(ln n)^p] converge and for what values does it diverge?
What is the future of Asian diversity in America That's a very broad topic since Asia includes people from such diverse countries as Korea, China, India, Pakistan, Kazakhstan, Russia, Israel, and Saudi Arabia. By the second or third generation, immigrants tend to be ...
A sliver bar 0.125 meter long is subjected to a temperature change from 200C to 100C.What will the length of the bar after the temperature change? See the aluminum question. I will be happy to critique your work and thinking. A silver bar 0.125 meter long is subjected to a ...
What is the length of an aluminum rod at 65 C if its length at 15 C is 1.2 meters? I will be happy to critique your thinking. New length= oldlength(1+alpha*(65-15)) where alpha is the coefficent of linear expansion of aluminum 1.201386 meters
How much heat energy is required to raise the temperature of 5Kilograms of a coal from 20 C to 220 C ? Coal? Doesnt coal decompose before 220C> 1,314,718 j is the correct answer to this question, I just finished a test with that same qustion on it.