Aidan

Most popular questions and responses by Aidan
1. chemistry

Calculate the quantity of heat gained or lost: a) 3.50 mol H2O freezes at 0.0 oC b) 0.44 mol of steam condenses at 100 oC

2. Math

Rena knows a dollar coin has a mass of a little than 10 grams. She guessed that 1 kilogram of dollar coins would be worth dollars. Is this prediction reasonable ? Explain your thinking

3. math

there are 6 rows with 18 chairs in each row. in the center of the chairs, 4 rows of 6 chairs are brown. the rest of the chairs are blue. how many chairs are blue?

Naturally occurring cobalt consists of only one isotope, cobalt59, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt60, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.8155 sample of cobalt has an

5. Math

A carpenter is putting a skylight in a roof. If the roof measures 4x + 5 by 7x + 7 and the skylight measures 10x + 10 by 2x + 6, what is the area of the remaining roof after the skylight is built. Put your answer in factored form.

6. Chemistry

Which is a conjugate pair in the following equilibrium? H2C2O4(aq) + HPO4(aq) 2- HC2O4(aq)- + H2PO4(aq)-

7. Chemistry

What types of intermolecular forces allow CO2 to dissolve in water? Do CO2 and H20 have a relatively strong or weak attraction?

8. Physics

Initial Statement: A soccer ball is kicked with an initial horizontal velocity of 15 m/s and an initial vertical velocity of 14 m/s. 1) What is the initial speed of the ball? 20.518 2) What is the initial angle θθ of the ball with respect to the ground?

15. Math

For what real values of c is x^2 + 16x + c the square of a binomial? If you find more than one, then list your values separated by commas. Need help...

16. Chemistry

Are the molecular and imperical formula of lauryl alcohol the same? C12 H26 O?

17. MUSIC THEORY PLZ HELP

ive been writing a composition for my school jazz combo. its in E minor. apparently i have to write the tenor sax and soprano sax in a different key signature. whats going on? Compose the tenor and soprano parts in a key signature that is relative to E

18. Math

For a certain day, the depth of water, h, in metres in Tofino, B.C at time t, in hours, is given by the formula: h(t)=7.8+3.5sin[pi/6(t-3)], tE[0,24]. Assume t=0 represents midnight. Provide an algebraic solution to determine the time(s) of day, the water

19. CHEMISTRY

IF you add ice at zero degrees celcius to a container of water maintained at 0degrees, the ice wil float on the water with that water finding a certain level in the container. As the ice melts, forming liquid at zero degrees, would you expect the water

20. Physics

Two students are on a balcony 24.3m above the street. One student throws a ball, B1, vertically downward at 12.5 m/s. At the same instant, the other student throws a ball, B2, vertically upward at the same speed. The second ball just misses the balcony on

21. Chemistry

Write equilibrium Constant expressions (k) for the following reactions: Ni(s)+ 4CO(g) Ni(CO)₄ HF(aq) H(aq) + F(aq) Cl₂(g)+2Br(aq) Br₂(l) + 2Cl(aq)

22. Math: Ratios

The ratio of the number of people who own an iPhone to the number of people who own a Samsung is 5 to 3. If 500 more people on an iPhone then a Samsung how many people on each type of phone?

23. Physics

Hail of a diameter of 1 cm fall at a constant speed of 25 m/s. There is estimated to be 120 hailstones per cubic meter of air. Mass of each hailstone is .482g. Assuming the hail does not bounce, find the average force on a flat roof measuring 10m by 20m,

24. Physics

A cue ball travelling at 7.6 m/s strikes the eight ball. The eight ball moves away from the collision at an angle of 22 deg. on one side of the initial line of travel. The cue ball moves away at 33 deg on the other side of the initial line of travel. What

25. Chem

Find the number of protons and electrons of N-3. Would it be 7protons, and 4electrons? or 7 protons, and 7electrons?????

26. Science Chemistry

if 4.35 kj of energy are needed to heat a sample of water from 62C into steam at 100.0C what is the mass of the sample

27. Chem

Naturally occurring cobalt consists of only one isotope, cobalt59, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt60, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.8155 sample of cobalt has an

28. maths

what is a* in algebra

29. physics

A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 13 m/s. The cliff is h=37 m above the water's surface, as shown below. With what speed does it strike the water?

30. Real World Problem: Ratios

The Alpine ski resort has started to keep track of the number of skiers and snowboarders who bought season passes. The ratio of the number of skiers who bought season passes to the number of snowboarders that bought season passes is 2 : 3. If 250 more

31. Math

A 25 ft. Ladder is placed 8 ft. From the base of the house. How high up the side of the house can the ladder reach?

32. math

4=4*6-2+3 Where should I put the grouping symbols to make this true??

Assume that the fish have an average mass of 280g. The average caloric value is 8kcal/g. The heron is able to digest 60% of the fishes’ mass. How many will it need to eat to sustain its caloric intake of 3,000kcal/day?

34. physics

I am flying a plane capable of an airspeed of 100 km/hr. If the wind velocity was 45 km/h , in what direction would I have to fly in order to follow the track to my destination. And how long would this trip take? The distance between my starting point

35. chemistry

Will the following reaction occur Spontaneously? Show your work and reasoning in each case 1. Ca(s) + Sn^4+ -->

36. Physics

A rocket moves upward starting from rest with an acceleration of 32.5 m/s^2 for 4.52s. It runs out of fuel at the end of the 4.52 s but does not stop. How high does it rise above the ground?

37. Chemistry

This lab is ruining me. isopentyl acetate is a blend of isopentanol, acetic acid, and sulfuric acid. How can products be determined from this information? ethyl acetate is ethyl alcohol, acetic acid and sulfuric acid. Octyl Acetate is n-octanol,

38. Chemistry

What types of products would you expect to find in methyl salicylate, isopentyl acetate, ethyl acetate, and octyl acetate. I'm lost. Any ideas?

39. what is solution to 1+(3)=9

I'm having trouble with this question, not coming up with any of the possible answers. idk what I'm doing wrong

40. Math

Ben decides to get an ice cream cone. He is going to choose two toppings out of an available six. Ben also has to choose between a plane cone or a waffle cone. If he chooses vanilla ice cream how many different combinations of toppings and cones does he

41. physics

The terminal velocity of a 4×10−5 {\rm kg} raindrop is about 9 {\rm m/s}. Assuming a drag force F_{\rm{D}} = - bv, Assuming a drag force determine the value of the constant b.

1. physics

tf

posted on April 29, 2019
2. Physics

yo this is garbage, didn't solve my question

posted on January 3, 2019
3. Algebra

Its a low ha ,or aloha

posted on April 4, 2018
4. History

posted on February 21, 2018
5. math

I need help with the same thing if someone could do it for me I could really use the help

posted on December 22, 2017
6. Analogies

steam

posted on December 4, 2017
7. Math

When is this ever gonna matter at all no guy is gonna randomly ask you if the Missouri River is 2540 miles long and the Mississippi River is 23/25 of that length then what is the length of the Mississippi River and technically the correct answer is 2,320

posted on October 19, 2017

-_- -_- =-=

posted on February 20, 2017
9. Health

a pound of butter since lean meat has less fat than a pound of butter therefore a pound of butter has more calories

posted on February 16, 2017
10. Math I REALLY NEED HELP!!!!!!!!!

I think it would be A because if you do (2,2) and multiply both the 2's by 4 you will get (8,8). I hope this helps.

posted on January 19, 2017
11. English

posted on January 5, 2017
12. math

35m,40m

posted on November 22, 2016
13. Science

speed is made of two things they are? Distance and time.

posted on September 15, 2016
14. Math

posted on October 20, 2015
15. Biology 205

what purification process bears Louis Pasteur name

posted on December 11, 2014
16. Biology 205

fdtwtw

posted on December 11, 2014

Thank you SO much

posted on September 20, 2012

(94 - 6) / (66/6) = 88 / 11 = 8 88 / 11 = 8 8 = 8

posted on September 20, 2012
19. math

hello zach.

posted on February 1, 2012
20. math

90% by the way when converting decimals to percent times it by 100

posted on October 3, 2011

Thanks!

posted on August 30, 2011
22. algebra

You factor (x-3)(x+8) x= 3,-8

posted on August 30, 2011

We get... OH wait, do we do 0.0569 X 1.8155g = 0.103g ? so cobalt60=0.103g

posted on August 30, 2011
24. Pre-Algebra

The coordinates would be along the 270degrees line. It would be along the y-axis between the third and four quadrant line.

posted on August 29, 2011
25. chemistry

you use the density formula density=mass/volume and solve

posted on August 29, 2011
26. Chem

thank you!

posted on August 29, 2011
27. Chemistry

Thanks so much for the help.

posted on March 4, 2010
28. Chemistry

what happens at the molecular level if the temperature of a CO2/H2O solution increases? I know that has the temp. goes up the solubility decreases, but i don't really know what that means.

posted on March 4, 2010
29. Chemistry

when the element have different states, ie. (aq) (s) (g) etc. doesn't that change the way you write the constant expressions?

posted on January 27, 2010
30. Chemistry

This lab is ruining me. isopentyl acetate is a blend of isopentanol, acetic acid, and sulfuric acid. How can products be determined from this information?

posted on January 13, 2010
31. maths

sorry what is a * in algebra

posted on June 11, 2008