GM818

**△H of formation for KHCO3 is -532 kJ/mole**

A) K^+(aq) + H^+(aq) + CO3^-2 --> KHCO3(s)

B) K^+(aq) HCO3^-1 --> KHCO3(s)

C) 2 K(s) + 3 O2(g) + 2 C(s) + 2 H^+(aq) --> 2 KHCO3(s)

D) K(s) + 3/2 O2(g) + 2 C(s) + 1/2 H2 (g) --> KHCO3(s)

E) 4 K(s) + 5 O2(g) + 4 C(s) + 2 H2O (g) --> 4 KHCO3(s)

I think the answer is D, but I am not sure. Thanks in advance!

RuO2 + 2 H2SO4 + 2 KCl --> RuSO4 + K2SO4 + Cl2 + 2H20

The answer is 1, 2, 3, 4, or 5 electrons

I know this is a redox reaction but I'm not too good at those so help would be greatly appreciated. Thanks in advance!

1) Zn(NO3)2 + 2 NaBr --> ZnBr2 + 2

NaNO3

2) Fe + I2 --> FeI2

3) SiO2 + 2 C --> Si + 2CO

I think it is 2 and 3 but I'm not sure. Thanks in advance!

3 LiNO3 + CoS + 4 HBr --> CoBr3 + 3 NO + LiBr + Li2SO4 + 2 H2O

a) Co and N oxidized, S reduced

b) Co oxidized, S and N reduced

c) S and N oxidized, Co reduced

d) Co and S oxidized, N reduced

e) S oxidized, Co and N reduced

If you could explain this to me too, that would be great. Thanks in advance!

I'm 16 and her, her friends, and I became good friends. This particular girl is known to have met some scumbag guys online and her mom knows that. So, me and this girl just admitted that we had a big thing for each other, and the next day (today), I get texts from this girl's grandma and her mom threatening cops because "felonies can still be committed between states" (we live in adjacent states). Her mom texted me saying that she heard I was mean to her daughter and that I'm no friend of hers (when she asked who the number was I said it was ____'s friend _____). She was saying she saw all the perverted messages (which I know nothing of, so they're not me) and she will call the cops if I don't lose her daughter's phone number (and she blocked my number from daughter's phone). Meanwhile, this girl and her friends say that they've said nothing but nice things about me to anyone. So I don't know what I should do... Should I just let it go even though I really care about her?

I'll keep this short. I'm 16, she's 14. We met online and her, her friends, and I became good friends. This particular girl is known to have met some scumbag guys online and her mom knows that. So, me and this girl just admitted that we had a big thing for each other, and the next day (today), I get texts from this girl's grandma and her mom threatening cops because "felonies can still be committed between states" (we live in adjacent states). Her mom texted me saying that she heard I was mean to her daughter and that I'm no friend of hers (when she asked who the number was I said it was ____'s friend _____). She was saying she saw all the perverted messages (which I know nothing of, so they're not me) and she will call the cops if I don't lose her daughter's phone number (and she blocked my number from daughter's phone). Meanwhile, this girl and her friends say that they've said nothing but nice things about me to anyone. So I don't know what I should do...

I'm in geometry and I had a brain fart...I can get 49+x^2...is that all?

I have a YouTube channel and I was just looking around for someone to possibly create a channel background logo and intro. Any help would be sooo appreciated. Thank you in advance!

I was home alone this AM before school, and and I felt tired so I just had about 5oz (ish) of caffeinated coffee to try to wake myself up. It worked a little so I might want to do it again. Is 15 an appropriate age ft drinking coffee (not necessarily every day)? Like 2-3 times a week b4 school? I heard it stunted growth or something but idk if that's necessarily true.

I was home alone this AM before school, and and I felt tired so I just had about 5oz (ish) of caffeinated coffee to try to wake myself up. It worked a little so I might want to do it again. Is 15 an appropriate age ft drinking coffee (not necessarily every day)? Like 2-3 times a week b4 school?

My earbuds have lost about 40% volume on 1 side so I want durable earbuds that sound good too. I like rap and some dubstep so I like good bass in earbuds. I don't want the ones that go over your ears because I feel stupid with that kind on haha

I'm a 15 year old guy, I like music and gaming, sports, I'm already getting an iPod dock, and idk what else to get...everyone is asking and I have nothing to tell them.

I have no problems talking to girls, but I almost never talk to them because I have no conversation starters. I'm not unpopular or weird or anything so it's not that. And I'm going out Friday with some friends to a plaza sorta place by our NFL stadium (not gonna say exact place...for the weirdos out there) where a lot of the teens my age hang out. It has lots of stores and restaurants kinda like an outdoor mall. Any conversation starters for that if I see anyone I like? By the way I'm a HS freshman.

I recently had my first dance in high school. It's a catholic school so all the other catholic schools are invited. 1 is an all girls school and another is one that's about 2/3 girls. So long story short, there were lots of girls at the dance. Everyone always ends up grinding with someone unless they are too nerdy or weird or something. But I didn't grind with anyone...because I don't really know "how". I know the basics but I didn't wanna look like an idiot grinding weird. The music is really loud do u have to talk pretty loud to be heard. My friend and I are freshman (though I could easily pass as a junior...6 ft tall) and he just walked up to a junior (it's an all grade dance) and just said hey wanna dance and they just started grinding...so next time I kinda want some hot a** like 80% of the guys there. Any tips in grinding?

I'm a freshman at an all guys high school and we r having a dance with the all girls high school a few weeks from now. I'm usually quiet and shy around girls, but some say I'm pretty attractive. And some say I'm a 6/10 (I heard her going through yearbook and rating). I'm 15 next month, 6ft tall 190lbs and have a really deep voice everyone comments on. Since no girls (except possibly 2 I know) know me, how do I "pick them up"? I've never had a girlfriend before (because I didn't want one then). Thanks!

I'm a freshman at an all guys high school and we r having a dance with the all girls high school a few weeks from now. I'm usually quiet and shy around girls, but some say I'm pretty attractive. And some say I'm a 6/10 (I heard her going through yearbook and rating). I'm 15 next month, 6ft tall 190lbs and have a really deep voice everyone comments on. Since no girls (except possibly 2 I know) know me, how do I "pick them up"? I've never had a girlfriend before (because I didn't want one then). Thanks!

I'm a freshman at an all guys high school and we r having a dance with the all girls high school a few weeks from now. I'm usually quiet and shy around girls, but some say I'm pretty attractive. And some say I'm a 6/10 (I heard her going through yearbook and rating). I'm 15 next month, 6ft tall 190lbs and have a really deep voice everyone comments on. Since no girls (except possibly 2 I know) know me, how do I "pick them up"? I've never had a girlfriend before (because I didn't want one then). Thanks!

Hey guys.

I'm turning 15 next month. I'm a freshman at an all guys high school (I'm not even 0.001% gay...not that there's anything wrong with that) and our first dance with the all girls school is sept 17. I've never had a girlfriend, but I've had a few opportunities (3 actually...but I was younger and unready at the time so I rejected all 3 of them). I am not really outgoing and stuff, especially not around girls. Some people think I'm "hot" but I heard 2 girls going through the yearbook and rating guys, and I heard them give me a 5 or 6 (I forget). So idk wether to think of myself as good or bad looking. Personally I don't think I'm very attractive. I'm 6ft and 190 which is apparently like 10 lbs overweight according to my dr., and I always get + comments on my really deep voice. So since I'm at a new school where few people know me I've decided to "reinvent" myself. I want to get some advice on how to pick up girls at the dance (I didn't mention it's just a go and have fun thing as a freshman, not couples or anything). I'm respectful to people especially girls. I don't go around grabbing their asses. Sorry for the long question. Any help picking up girls is appreciated. Thanks'!

I have slight back acne but it that badly. Not that people walk around showing you their back, but is back acne even if it's not severe a turn off?

All I have on my TV is a place for red yellow and white wires. If I plugged in a pair of turtle beach headset's red yellow and white cords in and then put the xbox's red green and yellow cord on the place on the back of the headset's cords, would that work? Or does my tv not have everything I need?