Monday
February 8, 2016

# Posts by morgan

Total # Posts: 731

Math
February 2, 2016

Can someone help me on math?
You just asked this same question and I already answered it. \$2,000.00 at 6% for 7 years *** b. \$4,500.00 at 3% for 6 years *** c. \$1,400.00 at 6% for 9 years d. \$5,000,00 at 7% for 3 years *** e. \$800.00 at 15% for 5 years Calculate the tax for each pair of shoes with the ...
February 1, 2016

More math
a,b, and d Simple interest is just p x r x t
February 1, 2016

philosophy
Russell is arguing that philosophy is valuable. You'll want to think about his argument using his own key ideas: •How does he think philosophy is different from science? •Does he think philosophy is different from science in a good or bad sense, like one is ...
January 17, 2016

Math ASAP
Order the numbers from least to greatest. 0.21, 1/5, 0.18, 24% a. 0.21, 1/5, 0.18, 24% b. 24%, 0.21, 1/5, 0.18 c. 0.18, 1/5, 0.21, 24% d. 1/5, 0.18, 0.21, 24% ** Am I right? I don't know. Please help! Thanks so much!
January 11, 2016

Chemistry
A buffer solution contains 0.052 M HC2H3O2 and 0.025 M NaC2H3O2. The pH of this solution is _____. Ka for HC2H3O2 is 1.8x10-5.
December 1, 2015

Algebra
One number is 58 more than twice another. Their product is 58 more than twice their sum. Find the numbers.
November 23, 2015

World History
what is the social position of a merchant in both Christian and Islamic worlds.
November 19, 2015

Statistics
CI=point estimate +- (z)(standard deviation) CI= 0.3 +- (1.96)(0.04) CI= 0.3 +- 0.0784 CI= 0.3 - 0.0784 CI= 0.3 + 0.0784 CI= (0.2216, 0.3784)
November 10, 2015

Statistics
We observe a sample proprotion p-hat = 0.3. If the standard deviation of the sampling distribution of p-hat is 0.04, what is the 95% confidence interval for p?
November 10, 2015

chemistry
Assume that 268mL of 5.00M NaOH are diluted to a final volume of 574mL with water. What is the final molarity of NaOH (FM=40.0).
November 8, 2015

math
A runner and a walker depart from the same point going in opposite directions on a circular track that is 1 mile long. The runner travels at 9 mph and the walker at 3 mph. After how many minutes will they pass each other? I know the answer is 5 but I don't know how to get it
November 5, 2015

math
A runner and a walker depart from the same point going in opposite directions on a circular track that is 1 mile long. The runner travels at 9 mph and the walker at 3 mph. After how many minutes will they pass each other? I know the answer is 5 but I don't know how to get it
November 5, 2015

Jackie Carden
Mr Snyder is tiling a floor. The floor is 16 tiles long and 9 tiles wide. The center section is 12x long and 5 tiles wide. How many tiles are in the border section?
October 19, 2015

World History
Can someone please help me answer this question Historians traditionally date the end of the Roman Empire to 476 AD. Why is this? Is this a good date to use for the end of Rome? Why or why not? Does this date adequately capture the end of the so­called “Greco­...
October 11, 2015

World History
Can someone please help me found out the answer to this question. Discuss the relationship between inequality and war from the time of the earliest cities (roughly 4000 BC) to the end of the Bronze Age (roughly 1200 BC). You may consider any form of inequality in any group of ...
October 11, 2015

Chemistry
The strontium-87 isotopes stores in the body and decays by the process shown below. The half-life is 2.80hr. Suppose that 0.766 millicuries got into the body. How many mc will remain after 8.40 hr?
September 27, 2015

Chemistry
The strontium-90 isotope decays by the reaction below. It has a half-life of 28 yr. If the initial activity of this isotope was 168dpm, what would the activity be after 28.0 yr?
September 27, 2015

math
In jims,5 times as many students take the bus as those who walk. A total of 24 students walk or take the bus. How many more students take the bus than walk to school?
September 22, 2015

Science
How do I write the correct dissolution reaction for BaCl2
September 16, 2015

Chemistry
Which of the following shows the correct dissolution reaction for BaCl2?
September 16, 2015

science
Based on the oxidation numbers which compound is the oxidizing agent in the following reaction? 8Al + 3KClO4 ¨ 4Al2O3 + 3KCl
September 7, 2015

Chemistry
determine the molarity of a solution of silver nitrate prepared by dissolving 5g of silver nitrate in 25.0mL of water
September 1, 2015

Math
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a \$14 monthly fee and charges an additional \$0.20 for each minute of calls. The second plan has an \$18 monthly fee and charges an additional \$0.15 for each minute of ...
July 25, 2015

pre calculus
32% of a particular radioactive substance disappears in 227 years. Part 1: Find the decay constant. Your answer must be correct to five decimal places. Part 2: Determine the time T in years required for 93% of the substance to disapper. Your answer must be correct to two ...
July 6, 2015

geometry
Does pi cancel when I add 48ƒÎã2 + 36ƒÎ ?
May 11, 2015

Pre-Ap Chemistry
This is my last question and this one really threw me for a loop. I know that the temp has to be converted to kelvin which would make it 315.4 What volume of oxygen gas can be collected at 0.683 atm pressure and 34.0◦C when 42.4g of KClO3 decompose by heating, according ...
May 8, 2015

Pre-Ap Chemistry
This is due online in 20 minutes and I've been working on it for 3 hours. Im lost on what to do with this question. Please help How much H2 gas at STP can be produced by the reaction 2Na(s) + 2H2O(§¤) -> H2(g) + 2NaOH(aq) of 3.80 g of Na and excess water? ...
May 8, 2015

CHEMISTRY
264.6666666667 :) thanks!
May 8, 2015

CHEMISTRY
Nitric acid can be produced by the reaction of gaseous nitrogen dioxide with water. 3NO2(g) + H2O(§¤) −> 2HNO3(§¤) + NO(g) If 794 L of NO2 gas react with water, what volume of NO gas will be produced? Assume the gases are measured under the ...
May 8, 2015

THIS IS DUE BY 10PM
it said that it was wrong
May 8, 2015

THIS IS DUE BY 10PM
so then would it be (22.4)(.0821)(316.0) divided by 1.09? which is ultimately 534.671
May 8, 2015

THIS IS DUE BY 10PM
What is the volume of 0.100 g of C2H2F4 vapor at 1.09 atm and 43.9◦C? Answer in units of L
May 8, 2015

science
are you from connexus and if you are what grade
May 4, 2015

Chemistry
Calculate the pH of the resulting solution if 50 cm3 of 0.045mol dm-3 solution of C5H5N is mixed with 100 cm3 of 0.035 mol dm-3 of C5H5NH+
April 29, 2015

Chemistry
Calculate the pH of the resulting solution if 50 cm3 of 0.045mol dm-3 solution of C5H5N is mixed with 100 cm3 of 0.035 mol dm-3 of C5H5NH+
April 29, 2015

Math
We write at the same time again. LOL
April 16, 2015

Math
Thank you
April 16, 2015

Math
I know I said it was C now.
April 16, 2015

Math
April 16, 2015

Math
Yea but on my paper it doesn't say it like it does on the previous questions so I kind of got confused.
April 16, 2015

Math
Determine whether this sequence is arithmetic or geometric. Find the next three terms. 4. 3, 12, 21, 30, .... A.40, 50, 60 B.38, 46, 54 C.39, 48, 57 D.36, 32, 39 A? Thank you
April 16, 2015

Math
Thank you sooooooo much Irving.
April 16, 2015

Math
Determine whether this sequence is arithmetic or geometric. Find the next three terms. 81, 27, 9, 3, . . . A. arithmetic, 0, –3, –6 B. geometric, 0, –3, –6 C. geometric, 1,1/3 , 1/9 D. The sequence is neither geometric nor arithmetic. Is the answer C? Thank...
April 16, 2015

Math
lol I didn't even notice. Thanks.
April 16, 2015

Math
Thank you again sooooooooooooo much. You are a great help!:) Your really smart.
April 16, 2015

Math
Determine whether each sequence is arithmetic or geometric. Find the next three terms. -4,8,-16,32... A. Arithmetic, 64,128,256 B. Geometric, -64,128,-256 C. Geometric, -48,64,-80 D. The sequence is neither arithmetic nor geometric sequence. B? Thank you
April 16, 2015

Math
But a geometric sequence is when you times it and arithmetic is when you add it. So the answer has to be C, because C answer and A's answer are the same except arithmetic is the right answer.
April 16, 2015

Math
Determine whether each sequence is arithmetic of geometric. Find the next three terms. 14,19,24,29.... A. Geometric,34,39,44 B. Arithmetic,32,36,41 C. Arithmetic, 34,39,44 D. This sequence is neither arithmetic or geometric. Is the answer C? Thank you
April 16, 2015

geometry
State whether the following numbers make a right triangle and a Pythagorean triple: 2, 2 root 2, and 2 root 3 I am pretty sure that both answers are no, because 2 squared and 2 root 2 squared equal 8, whereas 2 root 3 squared equals 6, so it cannot form a right triangle or ...
April 4, 2015

grammer
Even in Hollywood, there was a “blacklist” of entertainment figures that should not be hired because they were suspect for their role in support in communism. I believe this sentence is confusing with the use of should. Do you agree? If so, what word or words should ...
March 17, 2015

chemistry
What is the strongest intermolecular force that occurs between carbon dioxide molecules? A. London dispersion forces B. Hydrogen bond C. Covalent bond D. Dipole-induced dipole attractions I think the answer is D but I am not sure
March 13, 2015

Chemistry
The reason that nonpolar oil will not dissolve in polar water is that the attractive forces between: A. the oil molecules are ionic and the attractive forces between the water molecules are covalent. B. the water molecules are weaker than the attractive forces between the ...
March 13, 2015

chemistry
March 12, 2015

chemistry
b. Gibbs Free Energy can either be negative when a chemical reaction is spontaneous or positive when a chemical reaction is nonspontaneous. When a chemical reaction is reversed, it can either go from spontaneous to nonspontaneous or the other way around. This means that the ...
March 12, 2015

chemistry
a. When a reaction thermodynamically favorable, it will be a spontaneous reaction as well as release energy. Gibbs Free energy is the amount of energy needed for a reaction to take place. If the Gibbs Free energy is negative that means that the reaction does not need an impute...
March 12, 2015

chemistry
a) Describe how to determine if a reaction will be thermodynamically favorable. b) Describe what happens to the Gibbs Free Energy term when a chemical reaction is reversed. c) Describe how coupling reactions are used to drive an unfavorable chemical reaction.
March 12, 2015

chemistry
Explain how the geometry affects the ability of the molecules to experience a dipole affect. One molecule is a trigonal pyramidal while the other is a tetrahedral.
March 12, 2015

Chemistry
what is the VSEPR of NF4+
March 12, 2015

chemistry
In 3-4 sentences, identify how the geometric structure of NF3 is different than that of NF4+. Explain how the geometry affects the ability of the molecules to experience a dipole affect.
March 6, 2015

LSU
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.53 x 104 m/s, and the radius of the orbit is 3.42 x 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 9.28 ...
March 6, 2015

Chemistry
a) A current of 1.50 Amperes passes through a solution of AgNO3 for 3.0 hours. What mass, in grams, of silver collects on the cathode? (molar mass of silver = 107.9 g/mol) b) How many seconds would it take to collect 100 g of silver to collect on the cathode if 1.50 Amperes ...
March 5, 2015

chemistry
1. Many types of spectrophotometers produce graphs containing a base line with peaks. How are the peaks seen on the graphs produced by a spectrometer used in identifying substances? 2. If the analysis of a substance by using spectroscopy shows characteristic peaks, how does ...
March 2, 2015

Chemistry
Calculate the heat of reaction (ΔHrxn) for the following reactions, using heats of formation (ΔHf). Show your work. Refer to a table of heats of formation in your textbook as needed. 5O2(g) + 4NH3(g) → 6H2O(g) + 4NO(g)
March 1, 2015

chemistry
To interpret and compare heats of reaction (Hrxn), standard states must be used. What are the standard states for a gas, an aqueous solution, and a pure substance? Why are they important?
March 1, 2015

chemistry
1. Outline how you would use a calorimeter to determine the enthalpy of fusion of ice. 2. Suppose the enthalpy of fusion of ice determined from your experiment is lower than the accepted value. List three possible causes of the difference in value. Explain how each cause ...
March 1, 2015

physics
A fighter pilot is exposed to an acceleration of 3g in the horizontal direction during takeoff. Knowing that 1g=9.8 m/s2 and that the mass of the fighter pilot is 63.6 kg, what force (in Newtons) does the fighter pilot experience in the horizontal direction? This is the force ...
February 25, 2015

Chemistry
HCl is a gas at room temperature and does not conduct electricity. Yet when dissolved in water, the solution becomes an excellent conductor. Classify HCl as metallic, ionic, molecular or covalent network, and explain why HCl would conduct electricity in an aqueous solution.
February 25, 2015

chemistry
I ned these classified as metallic, ionic, molecular or covalent network and two reasons why. Aluminum Ascorbic acid Graphite Paraffin Palmitic acid Sodium chloride Sucrose Water
February 25, 2015

chemistry
Are acids like ascorbic acid and palmitic acid ionic, molecular, or covalent network compounds
February 25, 2015

Chemistry
Lets say you melted palmitic acid, paraffin, and sucrose. While they be good conductors, poor conductors, or will they not be able to conduct electricity.
February 25, 2015

Chemistry
In general, do transition metals or main group elements tend to have higher melting points? According to a article, the FeCoNi alloy tended to have a uniform structure when only Fe, Co, and Ni were included. With Al and Si, however, it had more segregation in its structure. ...
February 23, 2015

chemistry
I have questions but I don't understand this passage. Could you give a summery? Here are the question 1. One problem the researchers faced was an uncertainty about whether the signals observed in certain mass spectrometry data were, in fact, due to lead isotopes. Explain ...
February 20, 2015

Chemistry
The balanced net ionic equation resulting from addition of aqueous hydrochloric acid to solid chromium(III) hydroxide is: A. Cr(OH)3 (s) + 3 HCl (aq) 3 H2O (l) + CrCl3 (aq) B. Cr(OH)3 (s) + 3 Cl- (aq) 3 OH- (l) + CrCl3 (aq) C. Cr(OH)3 (s) + 3 H+ (aq) + 3 Cl- (aq) 3 H2O (l) + ...
February 20, 2015

chemistry
Describe how to prepare 1 L of a 0.5 M solution of cobalt chloride hexahydrate (CoCl2 6H2O). Be sure to identify the labware shown above (flask and a scale), explain your reasoning, and show any calculations.
February 20, 2015

Chemistry
Use this reaction for this question: 4NH3 (g) + 2O2 (g) 4NO (g) + 6H2 (g); H = -905 J. Which statement is true about the reaction above? A. G is negative at all temperatures. B. S is negative and G is positive. C. S is negative and G is negative. D. G is positive at all ...
February 20, 2015

This is a tricky question but I think I understand 1 trip, both geese 2. two bags of corn, but he has to take the geese back with him 3. the dog and the other bag of corn 4. He has to go back to get the geese So he need to cross the river eight times.
February 20, 2015

chemistry
A particular photon has a wavelength of approximately 2 x 10-7m. What is the energy, in joules, associated with this photon? A. More information is needed. B. 4 x 10-32 C. 1 x 10-18 D. 1 x 1018 E. 1.5 x 1015
February 20, 2015

chemistry
Given the following information about electronegativity, which binary compound would form covelant bonds with the greatest polarity? Element Electronegativity H 2.1 Li 1.0 S 2.5 Al 1.5 F 4.0 Cl 3.0 A. HCl B. LiF C. H2S D. AlH3
February 19, 2015

Chemistry
I believe the reduction values are .15 (copper) and -.25 (nickel)
February 19, 2015

Chemistry
Suppose a galvanic cell contains one nickel electrode and one copper electrode. At 25°C, nickel has a negative reduction potential and copper has a positive reduction potential. At which electrode will reduction occur? Explain. I believe the copper will be oxidized and the...
February 19, 2015

chemistry
Thank doesn't help. I posted the question because I don't understand how to compare the electronegativity when there are molecules like AlH3.
February 19, 2015

chemistry
Given the following information about electronegativity, which binary compound would form covelant bonds with the greatest polarity? Element Electronegativity H 2.1 Li 1.0 S 2.5 Al 1.5 F 4.0 Cl 3.0 A. HCl B. LiF C. H2S D. AlH3
February 19, 2015

chemistry
If BH3 formed the trigonal planar molecule shown in the image below, which statement would best describe BH3? A. Boron does not contain a complete octet of electrons. B. BH3 would orient in an electric field. C. BH3 is a polar molecule. D. BH3 forms four bonds around the ...
February 18, 2015

the answer is d I illuminated a and b because I knew that Tf has to be subtracted by ti. Next I illustrated b because I knew the mass had to be that of water or the total. FInally, I used the formal for c before and my number was to high so division made sense I hope you can ...
February 18, 2015

Chemistry
Should I go with c or d?
February 18, 2015

Chemistry
You want to determine the heat of reaction when a sodium chloride solution is formed using a 10.0 g sample of NaCl(s) and 50.0 mL of water in a coffee cup calorimeter. Which of the following equations would you use? Assume the specific heat of the solution is the same as the ...
February 18, 2015

chemistry
I think the answer could be a. What do you think?
February 18, 2015

chemistry
Why is there a decrease in electron affinity going from lithium to sodium? A. There is a stronger nuclear charge, with no additional shielding electrons or number of shells. B. There are fewer spaces in the valence shell in which to place the added electron. C. The nucleus has...
February 18, 2015

chemistry
Calculate the change in enthalpy produced by dissolving 14.3 g of NaOH in 65.0 g of water if the temperature increases 49.1°C and the specific heat of water is 4.18 J/g°C I believe you multiply 4.18, 65.0, and 49.1. Am I correct
February 16, 2015

Chemistry
I need to make an Orbital diagram for Li2O. Could you help me find a helpful website or something?
February 11, 2015

chemistry
How can Coulomb's law explain the distribution of electrons.
February 10, 2015

Chemistry
lets say you have an F atom and an Ne+ ion. Which is more stable
February 10, 2015

Physics
A bullet with a velocity of 200 m/s is shot at a 2-kg block resting on a horizontal frictionless surface. The bullet imbeds in the block and the bullet-block system slides across the surface with a speed of 5 m/s. A) what is the mass of the bullet? B)The coefficient of ...
February 10, 2015

Physics
A 1000 kg car moving at 27 m/s from left to right collides head-on with a 1500 kg car moving at 30 m/s right to left. A) Determine the magnitude and direction of the velocity of the wreckage after the collision. B) If a 1000 kg car moving at 36 m/s from left to right collides...
February 10, 2015

chemistry
2. Create a visual representation of ionic substances to connect the microscopic structure of ionic substances to each of the following macroscopic properties. a. Solubility in polar compounds (1 point) b. Brittleness (1 point) Please explain how to do this. I know they want ...
February 7, 2015

chemistry
I am having some chemistry problems. 3. The graph compares the 1s orbital energies for the F atom (Z = 9), the Ne+ ion (Z = 10), and the Na++ ion (Z = 11). (the graph shows F having an Orbital Energy of 692.45, Ne+ with 47.74, and Na++ with 33.52) a. How many electrons does ...
February 7, 2015

chemistry
2. Create a visual representation of ionic substances to connect the microscopic structure of ionic substances to each of the following macroscopic properties. a. Solubility in polar compounds (1 point) b. Brittleness (1 point)
February 6, 2015

chemistry due soon
I am having some chemistry problems. 3. The graph compares the 1s orbital energies for the F atom (Z = 9), the Ne+ ion (Z = 10), and the Na++ ion (Z = 11). (the graph shows F having an Orbital Energy of 692.45, Ne+ with 47.74, and Na++ with 33.52) a. How many electrons does ...
February 6, 2015

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