Posts by Nikki

Total # Posts: 726

Physics
I'm doing a project concerning space travel to Mars, and I need some help with calculations. This is the description of the assignment: After completing Assignment 1 we realized that our small spacecraft needs to travel at over 7 km/s to keep orbiting rather than spiraling...

Chemistry
4FeCr2O7 + 8K2C03 + O2 --> 2Fe2O3 + 8K2CrO4 + 8CO2 a). How many grams of FeCr2O7 are required to produce 44.0 g of CO2

Chemistry
What is the purpose of washing and drying the thermometer between readnigs?

World Literature and Language
It is about the A Very Old Man with Enormous Wings"

World Literature and Language
How do the villagers respond to the spider girl? What do you think their response symbolizes -- how does it relate to the rest of the story?

New Buffalo High
how many milliliters of a stock solution of 2.00 M KNO3 would you need to prepare 100.0 mL of 0.150 M KNO3?

Chemistry [Science]
Oh gosh... I need help, with like everything... [Show all work] Aluminum nitrite & ammonium chloride react to form aluminum chloride, nitrogen gas and water. What amount of aluminum chloride is present after 43g of ammonium chloride have reacted completely? I

math
is 67% a rational or irrational number

Math (repost)
Ok, I have the idea, but there's one thing that's really bugging me that I don't get... Why would a = -3?

Math (repost)
Given f(x) and g(x)=f^-1(x). If f(1)=4 and f'(1)=-3, then find g'(4). ...No idea where to start with this. Please help? Thanks much!

Math
Given f(x) and g(x)=f^-1(x). If f(1)=4 and f'(1)=-3, then find g'(4). ...No idea where to start with this. Please help? Thanks much!

med coding
whats one option for providing your employees with health care coverage for work related injuries? medicaid plans, medical savings plans, self insurance coverage or referrals to other networks

biology
Carbon monoxide blocks the transport of what by hemoglobin in the blood?

biology
thanks

biology
what is the process by which organisms maintain a relatively stable internal environment?

biology
thanks a bunch

biology
How can the level of pain you feel very if a stimulus causes an all-or-none response?

Chemistry
What's the difference between a galvanic and electrolytic cell when trying to find which half-rxn is the anode or the cathode? So like when you have two equations, depending on what kind of cell it's in, how can you tell which one is the anode and which one is the ...

Math
Solve for x: 3^(x+1)=2^x This is what I have so far... (x+1)log3 = xlog2 ...and now I'm stuck. Help plz? Thanks!

math
Where does the graph y=4x 11 cross the y-axis?

algebra
Provide an example of at least five ordered pairs that do not model a function. The domain will be any five integers between 0 and 20. The range will be any five integers between -10 and 10.

Statistics for Decision
A student conduct a study and reported that 95% confidence intervak for themean ranged from 46-54. He was surethat the mean of the sample was 50,that the standard deviation of the sample was 16and that the sample was atleast 30 but could not remember exact number. can you help me

spanish
what does "si no sabes la hora de un programa, ¿què haces?" mean and how would you answer that question?

Math
thanks Damon

Math
An auditorium has 30 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seats are in the auditorium My answer is 1170 but the way I figured out the problem was by listing numbers 1-30. the problem state that the 1st row had ...

Polish School
hey I need help. Can you finish this sentance, using one of these words? Words powstanie niepodleg³oœci rosyjskim emigracji 1863 Sentance: W XIX wieku Polacy podejmowali próby odzyskania... Thanks!

9th grade
True or False? in the west indies slaves were sold in exchange for land rights?

chem
my answer is 3.86. I believe my calculation is wrong

chem
calculate the pH for a solution that is made by combining 125ml of 6.0*10-2 M hydroflouric aid with 50 ml of .12 M sodium flouride?

math
rainbow Harbor Cruises charges $16/adult and $8/child for a round trip ticket. The records show that on a certain weekend, 1200 people took the cruise on saturady and 800 people took the cruise on sunday, The total receipte for saturday were $13,600 and the total receipts for ...

Math
I doulbe checked my math several of times just to make sure I gave the correct answer 25.35*25.2= $636.30 2.6*1.9=$4.94 2.8*3.9= $10.92 7.5* 4.9= $36.75 636.30 + 4.94 + 10.92 + 36.75= 688.91 So am I correct, or am I doing something wrong still?

Math
Okay, so after I added up the total sums together i got $688.91 that was spent on the purchase. Is this correct?

Math
A carpenter purchased 25.25 feet of hardwood at $25.20 per foot, and 3 types of trim molding: 2.6 feet $1.90 per foot, 2.8 feet at $3.90 per foot, 7.5 feet at $4.90 per foot. How much did he spend on this purchase?

Chem
Acetic acid has a Ka of 1.8*10-5 acetic acid ten times greater tha acetate acetate ten times greater tha acetic acid acetate=acetic acid what is the expected pH?

physics
i think its D

music
is the answer d. development of themes

music
the ____ is an essential characteristic of sonata form a. sudden crescendo b. absence of harmony c. fluctuation of rhythm d. development of themes

music
i think the answer is b. chamber

music
music to be performed by a small group is commonly known as _____ music a. orchestral b. chamber c. concerto d. sequential

music
i think the answer is c. orderly quality

music
which one of the following terms best describes the music of the classical period a. polyphony b. irregular metrical patterns c. orderly quality d. sudden loud and soft notes

music
i think the answer is a. character

music
________ music is generally associated with nonmusical ideas and objects a. Character b. Program c. Recital d. Literary

music
i think the answer is c

music
the chant was incorporated into several musical works of the romantic period a. kyrie b. agnus dei c. dies irae d. credo

music
i think the answer is a. one

music
how many movements are there in a tone poem a. one b. two c. three d. four

music
i think the answer is d. pedals

music
piano music of the romantic period frequently relies on the use of the a. staccato b. reed c. manuals d. pedals

music
i think the answer is b. emotional

music
the music of the romantic era is typically very a. intellectual b. emotional c. scientific d. unimaginative

music
i think the answer is d. literary

music
music is generally associated with nonmusical ideas and objects a. character b. program c. recital d. literary

music
i think the answer is d. optimstic

music
the music of brahms is often describe as a. negative b. dissonant c. disorganized d. optimistic

music
i think the answer is a. prelude

music
a short musical form written especially for the piano is called a a. prelude b. berceuse c. character d. waltz

music
the is an essential characteristic of sonata form a. sudden cresendo b. absence of harmony c. fluctuation of rhythm d. development of themes

music
in a group that plays chamber music, how many instruments will play each part a. one b. two c. three d. four

music
is it c. orderly quality

music
is it a. polyphony

music
which of the following terms best describes the music of the classical period. a. polyphony b. irregular metrical patterns c. orderly quality d. sudden loud and soft notes

music
the is an essential characteristic of sonata form

music
which one of the following terms best describes the music the classical period

business
its 44.1 million

physics
I'm having a really hard time with this physics problem...not really sure where to begin or which equation to use....please help: You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71...

mathematics
Question # 1: A series is: 1. any list of numbers 2. a summation of quantities whose positions are based upon the natural numbers 3. an arrangement of quantities whose positions are based upon the natural numbers. Which number is it? Question # 2: For the rule of 78, for a 12 ...

English
Why is it that in today's working world being able to write well and to use grammar correctly are so important?

Math
question 1: A series is: 1. any list of numbers 2. a summation of quantities whose positions are based upon the natural numbers 3. an arrangement of quantities whose positions are based upon the natural numbers. Which number is it? question 2: For the rule of 78, for a 12 ...

finance
Century Corporation uses a continuous billing system that results in average dialy receipts of $600,000. The company treasurer estimates that a proposed lock-box system could reduce its collection time by 2 days. a. How much cash would the lock-box system free up for the ...

Math
THank you so much

Math
According to the U.S Bureau of Census in the year 1850 the population of the US was 23,191,876 in 1900 the population was 62,947,714 A. Assuming that the population grew exponentially during the period compute the growth constant k. B. Assuming continued growth at the same ...

biology
In this organelle, carbon dioxide and water are converted to _________ and oxygen

maths
using the mean valiue thereom on f(x)=arcsin(x), show that x< arcsin(x)< x/(sqrt1-(x^2)) for 0<x<1

healthcare
suffereing from tetanus

Chemistry
btw my guess for the second one was d.

Chemistry
Sodium Chloride is the LEAST soluble in which of the following liquids? a. H2O b. CCl4 c. HF d. CH3OH e. CH3OOH I know NaCl is a polar molecule...and a dipole-dipole IMF bond? My guess is b because it's nonpolar and I think it's a London Dispersion IMF. Is this right? ...

Chemistry
Complete the reaction: Methanol and propanoic acid are mixed. Okay, I got the two formulas: CH3OH + CH3CH2COOH ---> ??? ...now I don't know what to do. Lots of CH3's and CH2's. Help? Thanks!

AP Chemistry
A 25.0g sample of glucose, C6H12O6, dissolves in 525mL of distilled water. a. what is the boiling point elevation of the solution over the pure solvent? b. At what temperature will the solution boil at sea level? --- I'm not a fan of these types of questions. This is the ...

Math
Determine an equation of the circle that is tangent to both axes, has its center in the fourth quadrant and passes through the point (8, -9). Help please? Thanks much!

Malgebra
dont know

english/ global
What's the word when someone believes in more than one religion? -Like someone who believes in Buddhism and Confucianism at the same time.

Chemistry
I need some help with net ionic equations. I can do single replacement, double replacement, etc., but I don't get stuff like gas forming-reactions or the trends when stuff like a strong acid and water are the reactants. Examples: 1. Moist sodium hydroxide reacts with ...

Physics
A sled is dragged along a horizontal path at a constant speed of 1.5m/s by a rope that is inclined at an angle of 30 degrees with respect to horizontal. The total weight of the sled is 470N. The tension in the rope is 240N. How much work is done by the rope on the sled in a ...

Physics
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. An 850-kg helicopter rises from rest to a speed of 6.9 m/s in a time of 3.8 s. During this time it climbs to a height of 9.4 m. What is...

Physics
An 825-kg race car can drive around an unbanked turn at a maximum speed of 59 m/s without slipping. The turn has a radius of curvature of 135 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of 2700 N on the car. a) What is the ...

English
"My hand was positioned as if I was holding an orange to the piano, just as she said." Is it "I was" or "I were"? People normally say "I were", but I don't know if that's actually grammatically correct. Thanks!

Chemistry
I need some help with writing reactions. I have the following to write out: a. the hydration of copper sulfate b. the reaction of liquid sulfuric acid to form aqueous sulfuric acid c. the reaction of calcium oxide w/ water to form calcium hydroxide For a, I know copper sulfate...

Physics (repost)
(I'll try to describe this the best I can, it's a little hard without showing a picture) This question deals with projectile motion: An archer is standing 150 meters above another archer 450 meters away [so visually the 150m and 450m make the right angle]. The archer ...

Physics
(I'll try to describe this the best I can, it's a little hard without showing a picture) This question deals with projectile motion: An archer is standing 150 meters above another archer 450 meters away [so visually the 150m and 450m make the right angle]. The archer ...

math
g(x) = abs(f(x)) [abs = absolute value] How exactly do I explain this transformation? I don't think "y-values turn positive, matching x-values of f" works very well. An example of another transformation: g(x) = 3f(x) ~Vertical dilation by a factor of 3. So how do...

finance
14. Lear, Inc., has $800,000 in current assets, $350,000 of which are considered permanent current assets.

U.S. History
What exactly were the colonists' reactions after the King issued the Proclamation of 1763? I know "shocked" and "feeling like they can't doing anything without England stepping in" are the obvious ones, but was there anything really specific? On the...

finance/math
N-84 (7*12) I\Y-12% P\Y-1 C\Y-1 PV-(8000) PMT-0 FV-108,994,326 I think you do it this way but the number is too big...

Chemistry
why are diamond tips used on industrial drills?

algebra
my teacher wants us to do problems 1-99 in our books, he wrote it on the board like this; "EEO #1-99" what dose EEO mean?

Math
Graph and identify the kind of conic the graph represents: a. x(t)=3 cos t y(t)=3 sin t on [0,2pi] b. x(t) =2 cos t y(t) =5 sin t on [1,5] I tried graphing A on my TI-89 calculator as y(1)=3 cos x and y(2)=3 sin x. All I see are two wave-like graphs crossing each other; I don...

Math (repost)
Graph x = y^2-6y+11 a. In function mode using two functions b. In parametric mode I already figured out how to graph it in functions, which is +/-sqrt(x-2)+3. The graph is a sideways parabola in the first quadrant opening to the right. I have no idea on how to come up with ...

math
Graph x = y^2-6y+11 a. In function mode using two functions b. In parametric mode I already figured out how to graph it in functions, which is +/-sqrt(x-2)+3. The graph is a sideways parabola in the first quadrant. I have no idea on how to come up with parametric equations for...

Math
Thanks! That really helps. However, what about the Cartesian equation? Am I on the right track with that?

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