Đáp án:
Giải thích các bước giải:
2NaCl+2H2O->2NaOH+H2+Cl2
1---------------------1 -----0,5---0,5mol
m NaCl=58,5g =>n NaCl=58,5\58,5=1 mol
=>VH2=0,5.22,4=11,2l
=>VCl2=0,5.22,4=11,2l
b)
mNaOH=1.40=40g
Mọi người giải hộ em với ạ mai em đi học
Read the passage about different tastes in music. Match the person with his/her opinion= Read the passage about different tastes in music. Match the person with his/her opinion. Write your answers in the space provided. James My favourite type of music ranges from Rap and R&B to Punk and Hard Rock. The only genre of music I don’t really care for is Country. I think it’s a good thing to have a wide ranging taste in music. Joongih I don’t really have a favourite type of music. If a song comes out on the radio and it catches my attention, I find out the name and the artist or group who sings it and I then download it. Eventually these songs of different genres become what I listen to in my spare time. Timmy My favourite genre in music is country music because the singers express their feelings. Country music is different because the entire singers relate to their childhood. They also relate to their family members. They express their love through the music. ____1. This person listens to every kind of music. ____2. This person thinks it is good to listen to a wide range of music. ____3. This person likes an emotional kind of music. ____4. This person can’t stand country music. ____5. This person downloads a good song. A. James B. Joongih C. Timmy
g) 4x = 5y = 6z và x - y - z = 12. k) x/2 = y/5; y/4 = z/3 và x - y + z =14.
chỉ mình câu 9 và 15 nha mong mn giúp mình đăng 1 lần rồi mà toàn trả lời sai
Mn giải giúp em, em ko cố ý gây spma nhé, nếu admin xóa câu hỏi hãy nhắn cho em để em giải thích ạ!!!!
cho x,y,z>0 thỏa mãn x+y+z=1. Tìm GTLN của P= (1+x)/(1-x) + (1+y)/(1-y) + (1+z)/(1-z) - 2.(y/x + z/y + x/z)
Giải thích rõ giúp mình câu b ạ. Cảm ơn
Giải giúp mình với ạ. Mình đang cần gấp lắm ạ. Mình cảm ơn.
giúp mik với !!!! V. Rewrite sentences so that their meanings stay the same: 1.Anne studies hard, so she gets good results. - Anne gets.................................................................................................. 2. Tom looks strong and healthy because he plays sports regularly. -Tom plays................................................................................................. 3.Because of the bad weather, we can’t play outside. -Because...................................................................................................... 4.I don’t eat beef because I don’t like it. - I don’t ......................................................................................................... 5.He works hard, so he passes all his exams. -He passes............................................................................................. 6.Although Hang isn’t English, she speaks English very well. - Hang isn’t.............................................................................................
Mọi ng ơi giúp em bài tập này vs ạ, em sắp nộp ròo
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