# Posts by Jack

Total # Posts: 1,823

L.A

math
Yes

Algebra

ENGLISH
No It's 1. B 2. A 3. C 100% correct

physics
Using the following conversion factors, determine the number of milliliters in a volume of 2.37 fluid ounces: 1 gallon (gal) = 128 oz., 3.785 x 10-3 cubic meters (m3) = 1 gal, 1 mL = 10-6 m3. I got an answer 7.09ml, but it's incorrect, so confused how to covert those factors

math
Point C and point D are plotted on the graph. Plot points A and B to form rectangle ABDC with an area of 36 square units. Plot point E at (2, 4).

english
No i have to do a tale. I wont do that idea, because it wouldn't work. Thank you for your suggestions.

english
Thank you.. i wanted something to do more with the weather of summer, but i don't think it would work for a tale??

english
Taking a summer course and reading a novel

english
I need to create a tale, which the principal topic is summer. Im not sure what kind of tale i can write about summer

Chemistry
Also*

Chemistry
Always the answer would be .1, right?

Chemistry
Just trying to understand this, but is C always the basic number when doing problems like this?

Chemistry
If the electromagnetic radiation used to send television signals have a frequency of 3.0 * 10^9 Hz, what is its wavelength? I forget how to do a problem like this. Just taking a guess, is this somewhat a conversion equation?

Chemistry
How does the kinetic-molecular theory help explain the difference between solids, liquids, and gases? I don't know how to really answer this question because the theory only talks about gases, unless I am looking at the wrong one. I tried to look it up swell and all I got ...

Chemistry
When naming a molecular compound, such as CO, would I write it as mono carbon monoxide or carbon monoxide? My textbook has the rule written as prefix+1st element prefix+2nd element, but I am not sure if the mono applies to the carbon or not.

Chemistry
Other than what you stated, I feel as if I need something else to answer the first question, such as numbers to help back it up.

Chemistry
What data led to the development of the Law of Multiple Proportions? Give an example and explain why this law is important in chemistry. Would this be a good answer: John Dalton used the same observations he used for his law of definite proportions to help develop the law of ...

Chemistry Stoichiometry
Oh I see now. I read it as each step you had was just different equations that you combined, not as a series of steps. Thank you!

Chemistry Stoichiometry
I wasn't in class when my teacher taught me this, and she did not go over the material well, so how were you able to go from PV=nRT to M=dRT/P?

Chemistry Stoichiometry
The density of chloroform at a pressure of 220 mmHg and 25 degrees celsius is 1.42 g/L. Calculate the molar mass of chloroform. My set up is: mol*K .289 atm 1 1.42g/L ------------- ------------ ------ --------- .08206Latm 1 298K What I am unsure of is if this is the right way ...

Chemisty
How does the kinetic molecular theory help explain the difference between solids, liquids, and gases? Would the answer be basically stating how the theory states the difference of their atom structure? Or is it something else?

Does it even matter at this point? Schools almost over, and you may even have a choice to disappear from the teacher(s) by going to another school. In my opinion, this "Anonymous teacher poses no threat.

art
Thanks Kitty, Great work.

Language Arts
Its D C A A

Calculus
Let f : R --> R be an odd function. Explain why, for any positive number a, the integral from -a to a of f(x) = 0.

Chemistry
yes that's what he was asking, thank you!

Chemistry
Consider the combustion of ethane: 2C2H6(g)+7O2(g)-->4CO2(g)+6H2O(g) If the ethane is burning at the rate of 0.7 mol/L × s, at what rates are and being produced?

Chemistry
The thiosulfate ion (S2O32-) is oxidized by iodine as follows: 2S2O32-(aq) + I2(aq) → S4O62-(aq) + 2I-(aq) In a certain experiment, 4.41×10-3 mol/L of S2O32- is consumed in the first 11.0 seconds of the reaction. Calculate the rate of production of iodide ion in ...

Chemistry
Which has the highest, second highest, third highest, and lowest boiling points? 1.0.20 m MnSO4 2.9.6E-2 m Al2(SO4)3 3.8.4E-2 m Al2(SO4)3 4. 0.45 m Sucrose(nonelectrolyte) [I know it is m times i but not sure how to get "i"]

IT/235 - IMAGE EDITING AND IMPLEMENTATION
If done in-house, what equipment would be required and what costs would be incurred? How would the photography affect the day-to-day store operations under each model?

Chemistry
A solution is made by dissolving 26.7 g urea, a nonelectrolyte, in 301 g water. (The vapor pressure of pure water is 23.8 torr at 25°C and 71.9 torr at 45°C.) Calculate the vapor pressure of this solution at 25°C.

Algebra
What the minimum of y=2x^2-7x-2? How do you find it?

maths, functions
The demand in units per week for a given product as a function of its price, p, in dollars is given as D(p) = 1100 Ð 200p, the supply of the same product in units per week as a function of its price, p, in dollars is given as S(p) = 100p Ð 100. The market clearing ...

operation managment
Garden Variety Flower shop uses 625 clay pots a month. The pots are purchased at \$2 each. Annual carrying costs per pot are estimated to be 15 percent of cost, and ordering costs are \$125 per order. The manager has been using an order size of 1,500 flower pots. There are 4 ...

Calculus
a) The value of a computer after t years after purchase is v(t) = 1000e^(-0.45t). At what rate is the computer's value falling after 5 years? b) Assume that the total revenue received from the sale of x items is given by R(x) = 32 ln (5x+3), while the total cost to produce...

algebra
Solve: 2a-3/a+1 = 3a-5/a+3

math

math
Boris has a coin and a number cube. The number cube is labeled 1-6. He flips the coin once and rolls the number cube once. What is the probability that the coin lands tails up and the cube lands on a even number? A. 2/3 B. 1/4 C. 1/12 D. 1/6 How do i solve this problem? I'...

social studies
I need help with the same question...

geometry.
Theres no numbers given to answer this question.

Math
Wells uf you think and do the math you Will get 3 Lbs and 6 Oz

This is nothing to do with school
A cinema sells adult tickets and child tickets. The total cost of 3 adults and 1 child is £30 The total cost of 1 adult and 3 children is £22 What is the cost of adult and child tickets

Choose all statements that are not true. a 20% of 20 is 4 b 30% of 30 is 9 c 40% of 50 is 15 d 50% of 110 is 60 e 60% of 60 is 360 The answer I choose is all of them. Is this correct.

Math
Choose all statements that are true? a 15% of 15 is 1 b 5% of 50 is 10 c 10% of 100 is 10 d 2% of 100 is 5 e 3 % of 200 is 6 I picked a, c and e.

math
2 lines are given by kx+6y-5=0 and 3x+2y+4=0 if they are parrallel what is the value of k

Algebra
If an angle, x, is in standard position, and P(-3, 4) is a point on the terminal side of the angle, what is the value of sin x?

chemistry
H2(g)+ o2(g)-> H20(l) (delta)Hf(h20(l)=-286 kj/mol the total volume of hydrogen needed fill the hindenberg was 2.3 x 15^5 m^3. what is the theoretical yield of heat (that which could have been evolved) when the hindenberg exploded, assuming all the hydrogen reacted?

chemistry
Hey DrBoB222 I was wondering if you could help me with that problem just a little bit ago again?

earth
Water

trig
The height should be somewhere around 4.5

trig
In this problem use Sin functions to solve. Sin(90) / 5 and set that equal to... Sin(65) / x and see what you come up with

chemistry
I would love help on trying to start this problem?

chemistry
okay thank you very much for helping me and everyone else that asks questions on here I think you did a really good job answering my questions and I will keep what you said about the molar mass and the atomic masses in mind for next time. Again I can't thank you enough.

chemistry

chemistry
okay I think I got, I got 7.1 x 10^-7 for part a, and I got for part b that they should be the same, and for part c I got 3.7 x 10^4, and finally for part d I got since 1.1 x 10^-8 is greater than 5.0 x 10^-13 a precip will form.

chemistry
so in the ICE box when you are solving for "x" am I supposed to use the Ksp for the solid

chemistry
Okay thank you

chemistry
I don't understand how to set it up and get started on the problem and this is a problem that our teacher gave us for practice for the AP Chem exam

chemistry
Several reactions are carried out using AgBr, a cream-colored silver salt for which the value of the solubility product constant, Ksp, is 5.0 x 10-13 at 298 K. a) Calculate the value of [Ag+] in 50.0 mL of a saturated solution of AgBr at 298 K. b) A 50.0 mL sample of distilled...

Science
A is right

math
If Someone estimatesthat their book bag weighs 8.5 pounds and actually weighs 11 pounds what is the percentage error

Science
It was c wasn't it

math
-230 this is because any numbers absolute value is that number with nothing els so a negitive is not a negitive it is positive and a positive is still positive

biochemistry
How to prepare 2L of 5.5M HCL solutions from scratch

math
First of all, lets note what the formula is. A=bh or lw 25 is the width so lets plug it in. 25w=150+175t Next, you evaluate that by Isolating the "w". Divide the 25 by 25 and divide 150+175t to get 6+7t Get rekt noob........

physics
bobpursley answer is correct for the first one but for b there is a vertical force of 9.81 because of the gravitational force

Social Studies
The people of Brazil can best be decribed as A Primarily indigenous in descent B largely of the white European ancestry C mestizos with shared-indigenous heritages <--- c is my answer D mixed race with native, African, and European roots.

Social Studies
The people of Brazil can best be decribed as A Primarily indigenous in descent B largely of the white European ancestry C mestizos with shared-indigenous heritages <--- c is my answer D mixed race with native, African, and European roots.

biology
hi, I am studying for an exam and I am trying to really understand the processes of things. So, in a cardiac muscle (everything else normal) what would happen if sympathetic stimulation does not lead to the phosphorylation of Troponin-I? I am asking specifically in regards to ...

chemistry
PLZ help me understand the way of solving this equation quick A 0.07 mol sample of octane C8H18 absorbed 3.5*10^3 j of energy. calculate the temperature increase of octane if the molar heat capacity of octane is 254.0 j/k*mol

biology
I need help on the following: Imagine that a motor unit, with its nerve intact, is placed in a solution that is calcium-free (but has the proper ionic strength – don’t worry how). Further imagine that the ends of the muscle fibers in the motor unit are held such that...

Algebra
1. C 2. B 3. A 4. D 5. D 6. A 7. D 8. The area of the shaded region will be the area of the rectangle minus the area of the white square inside of it: ((x+10)(2x+5)) - ((x+1)(x+1)) First, FOIL both of the areas separately: (2x^2 + 5x + 20x + 50) - (x^2 + x + x + 1) Simplify ...

social studies

Icp
A student is helping her teacher move a 9.5 kg box of books. What net sideways force must she exert on the box to slide it across the floor so that it accelerates at 1.0 m/s2?

Physics
12.4

Physics
A bowling ball of mass 3.5 kg moves in a straight line at 4.48 m/s. How fast must a Ping-Pong ball of mass 3.456 g move in a straight line so that the two balls have the same momentum? Answer in units of m/s.

physics
A wheel has a rotational velocity of 18·rad/s counterclockwise. You place you hand against the wheel and the friction between your hand and the rim stops it. (a) If it takes 4·s to stop the wheel, what is its rotational acceleration? rad/s2 (b) How far does the ...

Socials Studies
what did the monarch who replaced napoleon in 1813 want to revive how did it affect the people of france

Socials Studies
What was the outcome of the five year war between France and Spain and What country did Spanish troops ally with to fight napoleon's grand armee?

physics
A ball is thrown straight up and reaches a maximum height of 6.57 m . What was its initial speed? The accelera- tion of gravity is 9.8 m/s2 . Answer in units of m/s

physics
A 25.7 kg mass attached to a spring scale rests on a smooth, horizontal surface. The spring scale, attached to the front end of a boxcar, reads T = 47.6 N when the car is in motion. If the spring scale reads zero when the car is at rest, determine the acceleration of the car, ...

math
Karen collects local and foreign coins. Of the coins in her collection, 1 4 are foreign coins. Of the foreign coins, 2 5 are from Mexico. What fraction of the collection are foreign coins that are not from Mexico?

Socials Studies
Toussaint Louverture was immortalized in sonnet by the British poet Wordsworth

chemistry
What volume of 1.34 mol/L hydrochloric acid, HCI, is expected to react completely with 6.89 g of calcium?

Math
Eighty metres of fencing are available to enclose a rectangular area. What are the dimensions that enclose the max area. What is max area?

math
why do you always mind this person's business ms.sue?

Physics
A 2.13 kg mass is suspended from a string which is pulled upward. The mass accelerates upwards with an acceleration of 3.10m/s2. What is the tension in the string?

Physics
A 1250 kg car traveling at 20 m/s suddenly runs out of gas while approaching the valley shown in the figure below. What will be the car's speed as it coasts into the gas station on the other side of the valley? (Assume that no energy is loss to friction.) file://dd-s-1/...

Physics
A weight of 690 N is held by two cables. The left-hand cable had tension T2 and makes an angle of 41◦ with the ceiling. The right-hand cable had tension T1 and makes an angle of 42◦ with the ceiling. What is the tension in the cable labeled T1 slanted at an angle ...

english
Lennie thinks Crooks is trying to scare him and gets becomes defensive saying "George will come back"

physics
A ball player hits a home run, and the baseball just clears a wall 17.6 m high located 122.0 m from home plate. The ball is hit an an angle of 35° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.1 m above the ground. (a) What is...

Physics
A 0.118 kg baseball traveling with a horizontal speed of 3.14 m/s is hit by a bat and then moves with a speed of 33.7 m/s in the opposite direction. What is the magnitude of the change in the ball's momentum?

math
Two sides of a rectangular fence are 5 5/8 feet long The other two sides are 6 1/4 feet long. what is the perimeter

Math Help!
2/3(k+8)=52

math
What is the GCF of 8 and 24? What is the LCM of 8 and 24?Write the sum of 8 + 24 as the product of its GCF and another sum.

Physics
Mary if riding her bike at a constant velocity of 10.2m/s. Suddenly someone jumps in front of her, 6 meters ahead of her. The coefficient of friction is 0.35, and her total mass is 130kg. She slams the breaks with 800N of force. Will she be able to stop in time? I heard that ...

L.A.Help!!!!!!
the answers for the whole quiz is 1. c 2. d. 3. b

EDTECH
UNIT 4 lesson 4 All of this information is part of a ___ in a database. a. record b. row c. column d. field What other information do you need to add to complete the database above? a. cell fill color b. fields c. field names d. borders

science
What would you need to know to determine the total amount of photosynthesis going on in the canopy and near the forest floor? Why?

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