abcdefghijklmnopqrstuvwxyz

x+y/ y = k what does y/x equal? can some one please explain this?

which of the following is an electronic equation for the reaction?

10 Hcl + 3H2SO4 + 2KMnO4 ---> 2MnSo4 + 8H20 + 5CL2 + K2S04

the answer is Cl-1 ----> cl + 1e- but why? can someone please explain?

what is the difference between these two questions? Can you please explain ? Exam in a few days! Thanks in advance!

if there are three electrons in 2p .. the electrons will differ in ? answer magnatic quantum number

vs

if there two electrons occupy the 2px orbital they differ in ?answer magnetic spin

please show me steps exam soon!

how do i solve 7.46 = 6.1 + log 18/x? the answer is .78 but i don't understand how to get to that point!

im studying electronic structure and periodic table.. but im a little confused. When asked to find the number of electrons in an orbital when do you use the equation 4l + 2 vs the equation 2n^2? for example For example:

N=4

what is the max # of e- that N=4 has in its orbital which equation woulf yo use? 2n^2 or 4L +2

how many mL of .40 M H2S04 would require the same amount of base to reach full neutralization as would 25 mL .60 M H3P04?

a. 25.00 mL .40 M H2s04

b. 37.50 mL .40 M H2s04

c. 50.0 mL .40 M H2s04

d. 56.25 mL .40 M H2s04

Note : in flask two 40.0 mL of .30 N H3p04 Question : What is the phosphate concentration in Flask 2 after 40 mL of .30 N NaoH has been added?

a. .050 M

b. .100 M

c. .450 M

d. .900 M

I dont just want the answer please explain! Thanks alot!

1. At a distance froma point charge the electric field is 500 V/m. At 2.5 times that distance the electric field is ?

2. At a distance from a point charge the absolute voltage is 400 V at 2.0 times that that distance the voltage equals?

3. a negative charge is in a circular orbit around a massive positive charge . If the negative charge has a kinetic energy of 4.4 ev then its potential energy equals?

1. a cannonball at ground level is aimed 30.0 degrees above the horizontal and is fired with an initial speed of 125 m/s how far away from the cannon will the cannonball hit the ground.

2. a new discovered planet is found to have a mass of 5.50x10^24 kg and a radius of 7.00 x 10^6m . Calculate the acceleration due to gravity on its surface.

please please help!!! My final is on Tuesday

1. a sailboat leaves a harbor and sails 1.8km in the direction 295 degrees , where the captain stops for lunch. A short time later, the boat sails 1.1 km in the direction of 75 degrees. What is the magnitude of the resultant displacement from the harbor? use laboratory coordinates.

2. a physics student standing on the edge of the cliff throws a vertical stone downwards with an initial speed of 10.0 m/s. The instant before the stone hits the ground below, it is traveling at a speed of 30.0 m/s. If the physics student were to throw the rock horizontally outward from the cliff instead, with the same initial speed of 10.0 m/s, what is the magnitude of the velocity of teh stone just before it hits the ground?

A 10 FT tall fence runs parellel to the wall of a houseat a distance of 4ft. Find the length of the shortest ladder that extends from the ground , over the fence, to the house, Assume the vertical wall of the house and the horizontal ground have infinite extent

i know the tittle of the song has to do with everything .. and its by like just a little bit ( i think its a band ) or something like that .. i found it when i was youtubing songs.. by nikki flores ughh its driving me insane..

73) Calculate the mass defect in Mo-96 if the mass of a Mo-96 nucleus is 95.962 amu. The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu

Determine the binding energy of an O-16 nucleus. The O-16 nucleus has a mass of 15.9905 amu. A proton has a mass of 1.00728 amu, a neutron has a mass of 1.008665 amu, and 1 amu is equivalent to 931 MeV of energy.

i really appreaciate the help guys!

12) Balance the following redox reaction if it occurs in acidic solution. What are the coefficients in front of Cd and Ag+ in the balanced reaction?

Cd(s) + Ag+(aq) → Ag(s) + Cd2+(aq)

13) Balance the following redox reaction if it occurs in basic solution. What are the coefficients in front of Br2 and OH⁻ in the balanced reaction?

Br2(l) → BrO3⁻(aq) + Br⁻(aq)

What is the pH of a solution made by mixing 40.00 mL of .100M HCl with 25.00 mL of .100 M KOH? Assume that the volumes of the solutions are additive

ok so in the first box they gave

1 proton

2nuetrons

1 electron

in the second they gave 2 protons

2nuetrons 2 electrons

the question is identift whether the first and second particles are

a. atoms of 2 diff elements

b. ions of 2 diff elements

c. 1 atom and 1 ion, but both the smae element

d. 1 atom of one element and one ion of a diffrent element

20 minutes ago

i greatly appreciate this! and everyones help

2. 19 p 20 n 18 e

17p 18n 18 e

3. 7p 7n 7e

8p 8n 8 e

4. 11p 12n 11 e

11p 12n 10 e

5. 10 p 10n 10 e

9p 10n 10 e

6. 4p 5n 4e

5p 5n 5e

7. 11p 12n 10 e

12p 12n 10e

again thanks guys this means alot and the explinations make sooo much sense thanks!

ok so theres 4 multiple choice answers. atoms of 2 different elements, irons of 2 different elements, 1 atom and 1 ion, but both of the same element, and 1 atom of one element and 1 ion of a different element.. i have no idea and i have an exam in a little bit please please help guys! thank you

so you pick one of these answers

the first one is 1 proton, 2 neutrons, 1 electrons and 2 protons, 2 neutrons, and 2 electrons

a 6.18g sample contaning Ag2O and Ag was heated to decompose the Ag2O to Ag according to the following balanced equation 2Ag2O ----------> 4Ag +O2. The liberated oxygen was collected over water at 24C and 762 torr pressure and the volume of Oxygen collected was 260 mL. The vapor pressure of water at 24c is 26 torr. The mass percent of Ag2O in this sample is?

I am the father of seven married sons.Beginning with my number one A gift of dollars I do bequest;His wife to have one-ninth the rest and thus I carry out my aim. Each son $1.00 more than son just named;And for the wife's share each timeDivide the remainder by the figure 9 And so it goes, as I said before,Until there isn't anything more And now to set the question right, I'll state each family received alike.How much did each family (husband, wife) receive?.

Long story short, I used to talk to this guy for at least 6 months. We were never official or anything cuz we were both gonna start college. Over this past summer we still talked every day .. but towards the end he just stopped talking to me . A week later he calls and and tells me he didn’t have his phone, he was kinda acting different but with the convo he got better. He told me hes never thought about a girl this much.. who he isn’t even with. Ever since the end of the summer hes changed. I just found out yesterday that he had a gf… from someone else. I was very upset. Idk what to do because Im still in love with him . When we do talk it the best feeling in the world .. and his bday is coming up .. and b4 I had asked what he wanted and he said “ to spend time with you”. I don’t want to talk to him out of respect for his gf.. and for my sanity but I also don’t want to loose him. What should I do? And do I get him a bday gift ? hes prob the best guy i have evr met ... im loosing him and i feel that im loosing myself with him as well. he told me before the feelings he had for me would never go away ... but he has a gf.. how do i win him back ? and when he texts me do i respond back?