# Posts by ac

Total # Posts: 35

Chemistry
Thanks scott! Just a quick correction, the reaction in part C is actually 2Na + O_2 --> Na_2O_2

Chemistry
Thanks scott! Just a quick correction, the reaction in part C is actually 2Na + O_2 --> Na_2O_2

Chemistry
Write a balanced equation for the reaction that occurs in each of the following cases. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.) I think have the reactions, but I'm stuck with the states of matter. Any help would...

chemistry
You in Davis' class?

Coulomb's Law
Two charges attract each other with a force of 16N. What will be the new force if the distance between them is reduced to 1/2 of its original value?

Math
Suppose a planet has a radius of 5,000 km. Starting at the point on its surface at 0 degrees longitude and 0 degrees latitude,find the distance to the point on its surface at 30 degrees longitude and 60 degrees latitude.

Math
As of the 2012 Summer Olympics, the world record for women's long jump is 24 feet, 8 inches. How much longer is the world record than Sheila's first jump? Express your answer in yards. Sheila first jump measured 3 yards, 2 feet, 8 inches. Do I convert to inches or ...

Math
As of the 2012 Summer Olympics, the world record for women's long jump is 24 feet, 8 inches. How much longer is the world record than Sheila's first jump? Express your answer in yards. Sheila first jump measured 3 yards, 2 feet, 8 inches. Do I convert to inches or yards

Math Homework
Sheila's first jump was 3 yards 2 feet 8 inches her second was 2 yards 1 foot 10 inches how much longer was her first jump? express your answer in inches I'm having a hard time setting this up

Homework
Mary Ann poured 250 milliliters of fruit punch into 13 glasses. How many liters of fruit punch did she pour? a. 3.25 Liters b. 32.5 liters c. 325 liters d. 3,250!liters I think it's (a. 3.25), because 250 milliliters converted is 0.25 and 0.25 x 13 = 3.25

Homework
Laing enlarged a photograph to 1 3/4 times it's original size. The original photograph was 5 inches wide. What was the width of the enlarged photograph?. A. 5 3/20 B. 5 3/4 C. 6 3/4 D. 8 3/4 I think it's D I multiplied 5/1 x 7/4= 35/4 = 8 3/4

Math help
Which expression represents the quotient 3.36/6. A. (3/6)+(0.03/6)+(0.6/6) B. (3/6)+(0.30/6)+(0.06/6) C. (6/6)+(0.03/6)+(0.6/6) D. (6/6)+(0.30/6)+(0.03/6) I think it's B but not sure of how I really got the answer anymore.

Math
Makoto's lacrosse practice last 1 3/4 hours. This week he attended all of the practice on Monday and Wednesday, but he had to leave halfway through practice on Friday. How many hours did Makoto's spend at lacrosse practice this week? 1 3/4 + 1 3/4 +1 3/4. + 1 3/4= 5 1/...

Math
Jamal found 1/3 gallon of milk in the kitchen. He poured it into 5 equal size cups. What fraction of a gallon of milk is in each cup? 1/3 of 5 3 x 5 = 15 1/15

Math
Draw a parallelogram with an area of 48 sq cm with a decimal factor oft the length ,width or both

Calculus
find the absolute extrema for f(x)= (5-x) with a closed interval of -1,2

algebra

Music
i have the same test

algebra
a 13- foot ladder is placed so that it reaches to a point on the wall that is 2 feet higher than twice the distance from the base of the wall to the base of the ladder. How high does the ladder reach?

ssc 101
What is subculture

Statistics
Recall that very satisfied customers give the XYZ- Box video game system a rating that is at least 42. Suppose that the manufacturer of the XYZ- Box wishes to use the random sample of 65 satisfaction ratings to provide evidence supporting the claim that the mean composite ...

Pre cal
find the value of cotè given secè=5/4 and cscè<0

Math
17 bj n lm mnh j mj nj mjk nj

chem lab (webwork)
the answer is 7 for HCL and 8.72 for HC2H3O2

Marketing
To compete more successfully with its many competitors offering packaged cookies, Famous Amos added its own line of extra chunky premium cookies. This seems to be an effort at: A. Market development. B. Combination. C. Market penetration. D. Product development.

Physics
A droplet of ink in an industrial ink jet printer carries a charge of 1.6 x 10 to the power of -10C and is deflected onto paper by a force of 3.2 x 10 to the power of -4N. What is the strength of the electric field to produce this force?

math
Name 300 in two different ways

social studies
what impact did the establishment of french and dutch colonies in north america have on native americans?

Pigskin geography
#16 what is the host team which is in a state with two peninsula?

...Physics...
A jet moving at 500 km/h due east moves into a region where the wind is blowing at 120 km/h in a direction 30 degrees north of eat. What is the new velocity and the direction of the aircraft relative to the ground? I am completely lost on this question...

Physics
Thanks! ^^

Physics
A track star in the long jump goes into the jump at 12 m/s and launches herself at 20 degrees above the horizontal. How long is she in the air before returning to Earth? (g= 9.81 m/s squared) I tried using some formulas but I'm using all of the wrong formulas for this ...

CALCULUS - need help!
Determine the limit of the trigonometric function (if it exists). 1. lim sin x / 5x (x -> 0) 2. lim tan^2x / x (x ->0) 3. lim cos x tan x / x (x -> 0)

Calculus
Solve. (A) 2sin^2 x = 1 (B) tan^2 x = 3

physics- pressure/gas
Suppose 2500 J of heat are added to 4.1 mol of argon gas at a constant pressure of 120 kPa. (Assume that the argon can be treated as an ideal monatomic gas.) Find the change in internal energy. I started using U = N (3/2 kB T). But I have too many unknowns. The only other ...

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