Wednesday

April 16, 2014

April 16, 2014

Total # Posts: 153

**Science**

Human

**Science**

common pathways for food and air are the (1), which connects to the mouth, and (2), which connects to the larynx. Epithelium in this region is (3), which provideds good protection from friction. Three bands of skeletal muscle, the (4) propel food into the (5). Entrance to the ...

**chemistry**

The dosage of technetium-99m for a lung scan is 20 μCi/kg of body weight.How many millicuries should be given to a 65.0-kg patient? (1mCi=1000μCi)Suppose a person absorbed 54mrads of alpha radiation. What would be the dose equivalent in mrems?

**chemistry**

Write a balanced nuclear equation for the positron emission of each of the following radioactive isotopes: silicon-26,mercury-188,7737Rb,9345Rh

**Math**

This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

**math**

together, tom and max have 72 football cards.Tom has 2 more than 4 times as many cards as Max has. How many football cards does tom have ?

**math**

6,400. Since the power is positive, that shows that you will move the decimal point three spaces to the right.

**chemistry**

A certain weak base has a Kb of 7.80 × 10-7. What concentration of this base will produce a pH of 10.17?

**chemistry**

Complete the mass balance expression for a saturated solution of Ag2CO3. Note at least one blank is a numeric coefficient. (Note: Ignore any subsequent reactions of Ag .)

**chemistry**

balance the net ionic equation for the overall reaction. Pt | Fe2+(aq), Fe3+(aq) || I-(aq) | AgI(s) | Ag(s) a) Fe3+(aq) + Ag(s) + I-(aq) → Fe2+(aq) + AgI(s) b) Fe2+(aq) + Ag(s) + I-(aq) → Fe3+(aq) + AgI(s) c) Fe3+(aq) + AgI(s) → Fe2+(aq) + Ag(s) + I-(aq) d) F...

**Math**

Find the amount in each case. 8% is 56 kg.

**chemistry**

Calculate Ecell forthe following electrochemical cell at 25 C Pt(s) |H2(g, 1.00 bar) |H + (aq, 1.00 M) || Pb2+(aq, 0.150 M) | Pb(s)

**chemistry**

write a balanced net ionic equation for the overall reaction represented by the cell notation below. Pt/ Fe2+, Fe3+ // I-/AgI/Ag

**chemistry**

Balance the following redox reaction. MnO4 (aq) + Fe (s) --> Mn2+ (aq) +Fe2+ (aq)

**Math**

Solve the following system: 4x-y+z=6 2x+y+2z=3 3x-2y+z=3 Find the values for x, y, and z

**chemistry**

Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00 M solutions of their ions. a) If connected as voltaic cells in series, which two metals are plated, and what is the total potential? a) Ecell for Ag and ...

**chemistry**

A current of 3.04 A is passed through a Cr(NO3)2 solution for 1.80 hours. How much chromium is plated out of the solution?

**chemistry**

A 1.147 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution. To this solution was added 1.690 grams of KI and 50.00 mL of a 0.00821 M KIO3 solution. The excess I3– was titrated with 50.00...

**achem**

1L of a .2M solution of butanoic acid is altered by adding 5.00g of sodium butanoate. what is the pH of the new solution?

**chemistry**

1L of a .2M solution of Ethanoic acid is altered by adding 5.00g of sodium butanoate. what is the pH of the new solution

**please help analytical chemistry**

50 ml of a .1103M solution of formic acid is titrated with a .2511M NaOH. a) What is the pH before and NaOH is added? b) How many mL of NaOH solution must be added to reach the equivalence pt? c) what is the pH at the equivalence pt of the titration? d) If the titration is con...

**chemistry**

for a .001M solution of methionine: a) calculate the isoelectric pH b) calculate the isoionic pH

**Analytical chemistry**

a .2280g sample contained only NaCl and KBr. it was dissolved in water and titrated with a 0.04799M of AgNO3. complete titration of both halides was found to require 51.27mL of the AgNO3 solution. Calculate the weight percent of Cl in the solid sample.

**a. chem**

A 50.0 mL sample containing Cd2 and Mn2 was treated with 58.7 mL of 0.0500 M EDTA. Titration of the excess unreacted EDTA required 17.7 mL of 0.0300 M Ca2 . The Cd2 was displaced from EDTA by the addition of an excess of CN–. Titration of the newly freed EDTA required 29....

**Quantum**

What is the superposition that results if you apply the Hadamard transform H⊗n to the state 12√(|0n⟩+|1n⟩)? (Here, |0n⟩:=|00⋯0n⟩ and |1n⟩:=|11⋯1&#...

**Quantum**

What is the superposition that results if you apply the Hadamard transform H⊗n to the state 12√(|0n⟩+|1n⟩)? (Here, |0n⟩:=|00⋯0n⟩ and |1n⟩:=|11⋯1&#...

**Quantum Physics**

problem 8? pleaseee

**chemistry**

I multiply the Ea in 0.001 mole as the value is in j/moles. Still I don't get and how we apply two temparatures there?

**chemistry**

I've got 1.14*10^19 applying known formula D=D0*exp[−EA/RT]but it's wrong. Who can write a formula for b?

**math**

Thank you so much for your time and help in my math. :)

**math**

Does this numbers is correct 44 21 16 34 42 6 - less than 5

**math**

please help me with same numbers above but tens digit less than 5. Does this numbers is correct 44 21 16 34 42 6 - less than 5?. The number 5 confusing me what does it mean?

**math**

please help me with same numbers above but tens digit less than 5. Does this numbers is correct 44 21 16 34 42 6 - less than 5?. The number 5 confusing me what does it mean?

**math**

how about the number 6? does this number belong to the above numbers too?

**math**

is this the tens digit greater than -5 75 67 93 88 82 90 77 92 is greater than 5

**math**

no. Can you please explain the difference between them. thank you

**math**

no. Can you please explain the difference between them. thank you

**math**

numbers that have a tens digit greater than 5. Please help me to chose the correct numbers out of this choices 44 75 21 16 93 67 88 82 6 90 77 34 92 42

**math**

numbers that have a tens digit greater than 5. Please chose the numbers 44 75 21 16 93 67 88 82 6 90 77 34 92 42

**Chemistry **

The alcohol in gasohol burns according to the reaction C2H5OH(l) + 3O2(g) --> 2CO2(g) + 3H2O how many grams of water are produced when 3.0 moles of C2H5OH are burned in an excess of oxygen gas?

**Chemistry **

I am having such a hard time approaching this problem. It would be great if you can help me. 1.0 mole of CH4 react with 1.0 mole of O2 in a sealed container. (a) When the reaction is complete, what is the container? (b) How many moles of water are produced? CH4 + 2O2 ---> C...

**Chemistry **

I am having such a hard time approaching this problem. It would be great if you can help me. 1.0 mole of CH4 react with 1.0 mole of O2 in a sealed container. (a) When the reaction is complete, what is the container? (b) How many moles of water are produced? CH4 + 2O2 ---> C...

**physics**

A ball is dropped from the roof of a building. How much time does it take to reach a velocity of 15.4 m/s?

**physics**

A ball is dropped from the roof of a building. How fast is it moving after 4.6 seconds?

**physics**

if ball is thrown upward with a initial velocity of 38.5 m/s and the maximum height of the ball is 74.1m. How long will it take the ball to reach it's maximum height

**geometry**

<1 and <2 are a linear pair, if <2=67, then find m<1

**ms. sue plz**

could u plz check 4. C 5. B 4. At the office, Jacob knows from his boss that his needs will be met as long as Jacob performs his duties successfully. What theory of leadership does Jacob’s boss follow? A. Situational leadership theory B. Transformational leadership theor...

**ms.sue**

thank u

**ms.sue**

7. A 8. C 9. A 10. A please check 7. According to Peter Drucker, who determines an organization’s purpose, or mission? A. Company executives C. Stockholders B. Customers D. Supervisors 8. Which one of the following is a personal source of power? A. Coercive power C. Refer...

**business**

7. A 8. C 9. A 10. A please check 7. According to Peter Drucker, who determines an organization’s purpose, or mission? A. Company executives C. Stockholders B. Customers D. Supervisors 8. Which one of the following is a personal source of power? A. Coercive power C. Refer...

**business**

is the correct answer for # 4 = C and # 5 = B ?? 4. At the office, Jacob knows from his boss that his needs will be met as long as Jacob performs his duties successfully. What theory of leadership does Jacob’s boss follow? A. Situational leadership theory B. Transformatio...

**business**

to be honest with u i was convinced with my first answers, but i wanted to double check, when u said they're not correct i got confused... could u plz help me

**business**

1. D 2. C plz let me know

**business**

the first one I thought they want to allow ppl within the group to make all decisions , that how i based my answer. the second one could , thoughtful attention to needs of ppl for satisfying relationsips leas to a comfortable friendly atm... plz let me know what the correct an...

**business**

is the first one B and the second question A ?? 1.Which one of the following leadership styles could be best characterized by the statement “Let George do it”? A. Contingent C. Democratic B. Laissez-faire D. Autocratic 2. According to the Managerial Grid, which basic...

**business**

is it B ??

**business**

i think it's D Ms. sue could u plz check my other questions that i posted

**business**

Which one of the following situations is an example of overall cost leadership? A. A dress manufacturer wants to make its product unique in its category. B. A company that manufactures school desks is looking for ways to make its desks less expensive than its competition. C. A...

**business**

thank u

**business**

Negative power is primarily associated with A. voluntary exchange relationships. B. situations in which an individual is forced to change. C. situations in which both parties to an exchange feel good about it. D. exchange relationships in which involuntary compliance is viewe...

**Finance**

10.41%

**aliense egypt**

each stone in the pyramids weighed several?

**trigonometry**

I need help!!!! In the right triangle shown below, OG = 7, DG = 8, and m<DOG = 90. What is the measure of <G to the nearest minute?

**English**

I would correct the suggested sentences in the following way: 1. The greed of the 1980’s led the occupational insecurity of the 1990’s that reinforced family ties in the early 2000’s. 2. The building inspector suggested us to apply for a construction permit and ...

**Science 7R**

Yes, you're right. The answer is Lysosomes.

**8th grade math**

1,029 : (53 + 45) = 10.5 You don't know how long time will it take the cars to pass each other, so you assign letter "X" to the unknown time. Then multiply each car's speed by the time it would take for them to pass each other (e.g. by "X"). You'...

**English**

The first sentence is simile

**algebra**

These problems are solved in the following way: x / 16 + x / 8 = 1 Bringing these two fractions to the common denominator (which, in this case, is 16), we get the following: x / 16 + 2x / 16= 1 3x / 16 = 1 Solving the above equation for x, we get the following: x = 1 : 3/16 [r...

**PreCalculus **

I need help with a Matrix Algebra problem A small school has 100 students who occupy three classrooms A, B, and C. After the first period of the school day, half the students in room A move to room B, one-fifth of the students in room B move to room C, and one-third of the stu...

**trig**

tan theta= -4/3 and sec theta<0 find sin (theta = pi/6)

**human resources**

can you please provide me a specific information? I quietly not sure what does it mean by Internal consistency of Walmart. thanks

**human resources**

I wanted to know what is Walmart Internal Consistency ? Employee's goal that work in walmart Employer's goal ( walmart) Goverment's goal toward walmart? and Laws That Guide Discretionary Employee Benefits of Walmart.

**Algebra **

Thank You :)

**Algebra **

6|4p+2|-8<34 please help solve this.

**math**

given the point (-9,6), determine the points that are symmetric to this point with respect to the x-axis,the y-axis, and the origin, respectively. I know what the points are I just don't know how you figure out what order their in. (9,-6) (9,6) and (-9,-6)

**SCHOOL**

-8 + x = -24

**geometry**

ABCD is a parallelogram. If AB is equal to 2x + 1 and CD is equal to x + 13, find x

**psy **

i need help

**Phycology**

provide an example of how one domain of development impacts the other one

**IPC(integrated phsyics)**

Insulating materials are rated by their _____. specific heat heat index R-value temperature resistance

**math**

The perimeter of a quadrilateral is 56. The lengths of three consecutive sides are 9, 13, and 16. What is the length of the fourth side?

**English**

I'm writing my english on theme for a certain novel. What would be a good topic sentence to start my introduction off with?

**com 155**

Describe the strategies you have developed to avoid confusing the use of adverbs and adjectives in the future.

**12th grade**

3X+3=3

**math**

HOW TO SOLVE THIS? sqrt(8)( sqrt(10) - 1 ) PLEASE IT IS URGENT !!!!

**math**

HOW TO SOLVE THIS? sql 8( sql 10 - 1 ) PLEASE IT IS URGENT !!!!

**MATH**

I tryed to write a square root .

**MATH**

HOW TO SOLVE THIS? ã8(ã10-1) PLEASE IT IS URGENT !!!!

**physics**

a)because F=mxa you have m , and you need acceleration that is a , and a is a=v/t

**Math**

If sinx=3/4, with x in quadrant II, then determine the value of sin 2x

**math**

Solve using the multiplication principle -7x>1/5 The solution is x/x _ _

**math**

Solve using the addition and multiplication principles 8x+2-7x<_ 14

**math**

Find the slope, if it exists x+4y=8

**math**

Solve using the multiplication principle and then graph -13x>-65

**math**

Find the y-intercept and the x-intercept for the equations -6x+y=10

**algebra**

Graph the equation and identify the y-intercept is y=1/4x

**Math**

how do i solveseparable differential equation 7x−4y sqrt(x^2+1) dxdy=0 Subject to the initial condition: y(0)=−10

**chemistry ( science)**

how to make electrohemical cell? I have found some examples but they are all with Cu and Zn , and my teacher told us that we mustnt make cell with these two elements. Could you plesase help me

**Maath**

A coffee shop mixes French roast coffee worth $9 per pound with Kona coffee worth $4 per pound. How much of each type of coffee was used in order to obtain 20 pounds of a mixture worth $5 per pound.

**Math**

I posted this problem last night and someone answered. I followed all the steps that this person told me to do and I don't get the right answer. The right answer is suppose to be $23.54. What am I doing wrong? For groups of four or more diners, many restaurants add a 15% g...