HOC24
Lớp học
Môn học
Chủ đề / Chương
Bài học
Lop 6 hien tai don va hien tai tiep dien
6, watch
7, idea
8, decided
9, cans
10, enjoyed
Vào zuni nhé :D
The nurse uses the scale to weigh me.
1, Da Lat is a good place to visit. Da Lat has many beautiful flowers, colorful sight. People live in Da Lat are very friendly.
My name is Linda Black . I'm forty - eight years (1) old and this is my plan when I reatire . Well , when I retire , I'm going to (2) learn Vietnamese .I can a lready speak French , Italian , and German and I want to learn (3) another language . I'm also going to learn to drive . I never had time to learn (4) when I was younger . Then I'm going to buy a car a tent and travel all (5) over the work . I'm not going to wear boring clothes . I'm tired (6) of blouses and skirts . I'm going to (7) sell jeans and tracksuits all the time And when I come (8) home from my travels . I'm going to (9) buy a book and become a TV star and tell everyone about the places I (10) visited and the people I met.
trời ơi mê tín thế
1. I am not saying he is honest ,but he is not good with money. (honest)
1,
a, \(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3+H_2O\)
b, \(n_{CO_2}=\frac{V}{22.4}=\frac{3.36}{22.4}=0.15\left(mol\right)\)
\(n_{Ca\left(OH\right)_2}=V\times C_M=0.4\times1=0.4\left(mol\right)\)
Ta có tỉ lệ \(n_{CO_2}< n_{Ca\left(OH\right)_2}\) nên ta tính theo số mol của CO2
\(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3+H_2O\)
0.15 0.15 0.15 0.15 (mol)
Khối lượng Ca(OH)2 dư là \(m_{Ca\left(OH\right)_2du}=n_{du}\times M=\left(0.4-0.15\right)\times74=18.5\left(g\right)\)
c, \(C_{MCaCO_3}=\frac{n}{V}=\frac{0.15}{0.4}=\frac{3}{8}\left(M\right)\)
\(C_{MCa\left(OH\right)_2du}=\frac{n}{V}=\frac{0.4-0.15}{0.4}=\frac{5}{8}\left(M\right)\)
1. A.start B.marry C. partner D. party
2. A.phones B.streets C.books D. dates
3. A.April B.apple C.date D.name
4. A.good B.book C.moon D.look
5. A.lives B.parents C.things D.girls