# Posts by Kyle

Total # Posts: 1,109

Chemistry
The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1.000 g glucose is combusted in a bomb calorimeter. If the calorimeter contains 875 g H2O and the bomb has a heat capacity of 457 J/C, what is the temperature increase of the bomb calorimeter? the specific heat...

logic
The sentence "P → Q" is read as

CHEMISTRY! HELP!
I have a hard time getting this someone help me? Astronauts often use the unit light year to express intergalactic distances. If light travels 3.00 x .10^10 cm/s and one year is defined as 365 days, how many kilometers does light travel in one year?

Math
Explain in words, how you would solve: 3(n-8) = 12 + 2n

physics/math
If you are driving 116 km/h along a straight road and you look to the side for 3.0 s, how far do you travel during this inattentive period?

Math. due tomorrow
A female moth lays nearly 150 eggs. In on year there may live up to five generations. Each larva eats about 20mg of wool. Assume that 2/3 of the eggs die and that 50% of the remaining moths are females. Estimate the amount of wool that may be destroyed b the descendants of one...

Is the book KICKOFF! by Tiki & Ronde Barber with Paul Mantell Fiction or non-fiction?

math
we got 119 3/20 for the perimeter

math
the dims are of the poster and then he adds 4 1/2 inch

math
a poster reproduces the Mona Lisa in the original size, but adds a 4 1/2 inch border around each side. What is the perimeter of this poster if the length is 30 3/10" and width is 20 7/8"?

math
anoter poster reproduces the Mona Lisa in the original size, but adds a 4 1/2 inch border around each side. What is the perimeter of this poster if the length is 30 3/10" and width is 20 7/8"?

Physics
(a) 114.147 m (b) 778.4605 m

Math
In 45 seconds. 9,18,27,36.45 15,30,45

math
I thought I needed to do 9/10 x 7/1 which is 63/10 = 6 3/10

math
thank you

math
when planting trees in a forest, the US Forest Service recommends giving each seedling about 1/200 acre on which to grow. About hw many seedling should be planted in 1/3 of an acre? How would I show my work on this? would it be 1/3 x 200/1 = ?

math
Thank you!

math
still stuck on this one please help Marissa plans to use 50 sheet of aper for a scrapbook. How much thicker will the scrapbook be if she uses heavyweight (which is 2/5 in for 100 sheets) instead of lightweight paper (which is 3/10 in for 100 sheets)?

math
I do understand that, but if he uses 1/4 of the paper for the english section and 1/3 of the paper of the other 3/4 for the math section. How would I show this.

math
Eddie buys 100 sheets of heavyweight paper to make a notebook. He places 1/4 of the sheets in a section for English and 1/3 of the reamining sheets in a section for math. Which section is thicker if the 100 sheets of heavyweight paper is 2/5 in per 100 sheets?

math
Juan's class has 10 girls and 15 boys. the ratio fo girl to boys in Steven's class is the same as the ratio of girl to boys in Juan's class.How many girls are in Steven's class. Picture/diagram of my composed solution. We know that the ratio is 1:1.5 with a ...

math word problem
Weds to Thurs

Math
2.48>2.4 1>2.463

Biology
How are radioisotopes used to make biochemical reactions?

math
Two trains are traveling the same direction, train a is going 60 mph and train b is going 70 mph, after one hour how long will it take train a to reach the point train b was at the hour marker.

math
unit rate for 30 miles on 1.5 gal not sure how to write it

math
what is the unit rate \$16 for 32 photos is it 16/32= .50/1

Science.
187

math
list all prime numbers under 20 and the find GCF for 62 and 80 using factoriztion. is the answer 2 x 2 =4

math
list all prime under 20. then find the GCF for 64 and 80 use prime factorization.

Chemistry
They did the right work but the answer is 40 grams. That is what it says in the book.

math
Ms Sue when you said 25 in the overlapping section of math and english did mean math and history/

math
need to make a venn diagram using 3 circles. A survey on subject being taken by 250 students at a certain college revealed the following info: 1. 90 were taking math 2. 145 were taking history 3. 88 were taking english 4. 25 were taking math and history 5. 38 were taking ...

Math
If I have cards numbered 1 through 40 and I randomly draw 3 then replace them, shuffle them and draw three again what are the odds of drawing one of the numbers more than once

physics
A vertically hanging spring has a mass of 50 N hanging from it. Under these conditions, the spring stretches 10 cm. The spring is then placed on a horizontal table and stretched 20 cm. What force is required in the second scenario?

Principles of Management - Strategic Management
1.d,2.b,3.c,4.a,5.a,6.c,7.a,8.d,9.b,10.b,11.c,12.b,13.c,14.a,15.b,16.b,17.d,18.c,19.d,20.b I did miss one but not sure which one it was.

what are the pros and cons of the fur trade?

Physics
"A person is playing a small flute 10.75 cm long, open at one end and closed at the other, near a taut string having a fundamental frequency of 600.0 Hz. If the speed of sound is 344.0 m / s, for which harmonics of the flute will the string resonate? In each case, which ...

Physics
Ordinary glasses are worn in front of the eye and usually 2.00 cm in front of the eyeball. A certain person can see distant objects well, but his near point is 60.0 cm from his eyes instead of the usual 25.0 cm. Suppose that this person needs ordinary glasses. What focal ...

Physics
Ordinary glasses are worn in front of the eye and usually 2.00 cm in front of the eyeball. A certain person can see distant objects well, but his near point is 60.0 cm from his eyes instead of the usual 25.0 cm. Suppose that this person needs ordinary glasses. What focal ...

Physics
Ordinary glasses are worn in front of the eye and usually 2.00 cm in front of the eyeball. A certain person can see distant objects well, but his near point is 60.0 cm from his eyes instead of the usual 25.0 cm. Suppose that this person needs ordinary glasses. What focal ...

English
Bssmyale

math
Compute 9(sub)C(sub)6

Physics
The range away from the stage doesn't matter?

Physics
oh sorry the diameter is 8.4mm and the question is asking for the How much energy is transferred to her eardrums each second ?

Physics
A fan at a rock concert is 45.0 m from the stage, and at this point the sound intensity level is 108 dB. Sound is detected when a sound wave causes the tympanic membrane (the eardrum) to vibrate . Typically, the diameter of this membrane is about 8.40 m in humans I solved for ...

Historical Globalization & IMPERIALISM I HAVE POSTED ABOUT 8 QUESTIONS THAT I REALLY NEED THE ANSWERS TO, I HAVE SAT HEAR ALL WEEKEND AND JUST DON'T GET THEM I HAVE JUST GOT MYSELF SO CONFUSED SO COULD YOU PLEASE HELP ME, I'M SO TIRED AND FED UP! THANK YOU SO MUCH (I ...

social 10

social 10
What major way did the new imperialism of the late 1800s to early 1900s differ from the imperialism of the previous few ceenturies? PLEASE HELP ME!

social 10

social 10
(forms of imperialism) What are 3 ways that the new imperialism led to World War 1? PLEASE HELP!

social 10

social 10

social 10
Historical Globalization & imperialism Should the Europeans have tried to change the beliefs of thr people in their colonies during imperialist times? could you please give me some reasons. Please help

social 10

historical globalization \$ imperialism grade 10
what does eurocentric attitude means?

Could you please help with should the Europeans have tried to change the beliefs of the people in their colonies durind imperialist times,what do you think the reasons would be?

Could you help explain if imperialism lead to a better life for immigrants to Canada?

slavery before 1844, how were the slaves treated, did they have any right?

social
should the Europeans have tried to change the beliefs of the people in their colonies during imperialist times? WHY?

social
In two different pictures 'Christopher receiving gifts' and 'Columbus taking possession of the new country' What are the similarities? What are the differences?

social studies
slavery before 1844 was there any rights or rules for slaves or their familys. could they just beat them all the time?

math
how did you get this answer

math
3 9/20 = write as a decimal number

math
Solve and simplify (3+9i)-(12-5i) 8+6i/7-5i

math
Which X|Y X|Y 1|~1 2|6 Y is 8 less than 8 timesX Y is 8 less than 7 times X Which

Physics
Mastering Physics said the answer is 240N. NO IDEA HOW

math
Solve the system x^2+y^2-4x+2y=20 4x +3y =5

Physics
A circular loop of wire with radius 0.0450 m and resistance 0.154 R is in a region of spatially uniform magnetic. The magnetic field is directed out of the plane. The magnetic field has an initial value of 7.89 T and is decreasing at a rate of -0.630 T/s. What is the rate at ...

Chemistry
It requires 17.9 mL of 0.120 M KOH to titrate 78.0 mL of an HCl solution of unknown concentration. Calculate the initial HCl concentration.

Chemistry
Calculate the OH - concentration present in water under the following conditions. Enter your answer in scientific notation. A)[H3O+] = 9.4 x 10-10 M B)[H3O+] = 5.5 x 10-3 M C)[H3O+] = 6.2 x 10-12 M

chemistry
A 11.0% (w/v) solution of ethyl alcohol is diluted from 51.0 mL to 230.0 mL. What is the new weight/volume percent?

Chemistry
Consider the following reaction. 2KClO3(s) ¨ 2KCl(s) + 3O2(g) A)How many grams of KCl are produced from the complete reaction of 10.9 mol of KClO3? B)How many grams of KCl are produced from the complete reaction of 86.2 g of KClO3?

math
how do you calculate the unite price of the two items showing long division

math
how do you calculate the unite price of the two items showing long division

Math Log #3
Always.

physics
suppose a 1.50 kg object is suspended from the end of a silicone band. when the object is pulled down and released, the band vibrates at a frequency of 2.08 s-1. calculate the spring constant of this silicone band including units.

Chemistry
suppose a 1.50 kg object is suspended from the end of a silicone band. when the object is pulled down and released, the band vibrates at a frequency of 2.08 s-1. calculate the spring constant of this silicone band including units.

MATH USM
Write the following in terms of sin(θ) and cos(θ); then simplify if possible. cos(θ) + sin(θ)cot(θ) =

Chemistry
A Be3+ ion absorbs a photon with a frequency of 7.31 × 1015 Hz. If the energy of the final state of the Be3+ ion was -3.88 × 10(-18) J, calculate the energy of the initial state. Express answer in scientific notation. My work so far: delta E = (h)(v) delta E = (6....

Chemistry
A light photon with a frequency of at least 0.0373 × 1016 Hz is required to split apart diiodine according to the equation: I2(g) → 2I(g) Calculate the energy (kJ) required to break apart a mole of diiodine. Express answer in scientific notation. I got 2.47 * 10^-...

psyhics
A ball is dropped from the top of a 95 m building. With what speed does the ball hit the ground?

Chemistry
Oh okay. Yeah I did convert wrong. Thank you.

Chemistry
Calculate the energy in kJ/mol of a mol of photons in the ultra-violet region of the electromagnetic spectrum that has a wavelength of 2.88 × 10-7 m. Express answer in scientific notation. I got 4.16 * 10^8 but the correct answer is supposed to be 4.16 * 10^2.

Chemistry
I did the work, but I need help checking it... A compound contains 83.24% by mass carbon. Calculate the molar mass of the compound if it contains 5 moles of carbon per mole of compound. This was my process: I took 100g of compound and found that there are 83.24 g C in that ...

Pre calc
Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67° 30' 7 sin(67° 30')= cos(67° 30')= 4 tan(67° 30')=

Chemistry
Based on the balanced equation 2NBr3 + 3NaOH → N2 + 3NaBr + 3HOBr calculate the number of of excess reagent units remaining when 116 NBr3 molecules and 180 NaOH formula units react? I calculated the excess reagent to be NaOH. So is the units of remaining excess reagent 6...

Chemistry
A 0.7381 g sample of a compound containing C, H, and F was burned to produce 0.6368 g CO2 and 0.1303 g H2O. Calculate the empirical formula of the compound. Do I have to take in account the O atoms?

Chemistry
Is this correct? A 0.7473 g sample of a compound containing C, H, and O was burned to produce 1.909 g CO2 and 0.7813 g H2O. Calculate the empirical formula of the compound. I got C5 H10 O1. I'm not sure if that's correct..

Physics
Can an electric force between two point charges be negative?

physics
A woman pushes a crate along the floor of a warehouse with a force of 31.9 N directed downward at an angle of 23.6° from the horizontal. If the crate has a mass of 11.9 kg and the coefficient of friction is 0.0975, find... (a) the force of friction b. (b) theacceleration

physics
A woman pushes a crate along the floor of a warehouse with a force of 31.9 N directed downward at an angle of 23.6° from the horizontal. If the crate has a mass of 11.9 kg and the coefficient of friction is 0.0975, find... (a) the force of friction b. (b) theacceleration

physics
A woman pushes a crate along the floor of a warehouse with a force of 31.9 N directed downward at an angle of 23.6° from the horizontal. If the crate has a mass of 11.9 kg and the coefficient of friction is 0.0975, find... (a) the force of friction b. (b) theacceleration

Physics
3 charges are arranged along the x-axis. q1 = -4.50 nC is located at x = 0.200m q2 = +2.50 nC is located at x = -0.300m q3 = is a positive character located at the origin. What is the value of q3 for the net eletric force on it to be 4*10^-6 N? I found the charge on q3 to be...

Chemistry
If a sample of C6H4(CH3)2 is found to contain 3.54 * 10^26 CH3 groups how many moles of C6H4(CH3)2 molecules are present? C6H4(CH3)2 - 106.17 CH3 group - 15.035 C6H4 Group - 76.098 Please explain steps

Chemistry
Why did you divide .06 moles by 4? Is it because there is a 8:4 ratio of C and Co?

Chemistry
If a sample of Co2(CO)8 is found to contain 6*10^-2 mol of C atoms, how many grams of Co atoms are present? Molar Mass (g/mol) Co2(CO)8 - 341.95 Co atom - 58.933 C atom - 12.011 O atom - 15.999 Avaogadro's No.: 6.022*10^23 Do I need to use the 6*10^-2 mol of C atoms to ...

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