31 : 3 =
các bạn giải thích hộ mình với
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1.43x7/31x7=301/217
59x13/7x13=767/217
=>767/217>301/217
hay59/13>43/31
2.rút gọn -48/224 còn -3/14
rút gọn -52/247 còn -4/19
-3/14=-3x19/14x19=-57/266
-4/19=-4x14/19x14=-56/266
=>-57/266<-56/266
hay-48/244<-52/247
vậy...
\(n_{CO_2}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\)
PTHH: CaCO3 --to--> CaO + CO2
__________________0,1<--0,1
=> mCaO = 0,1.56 = 5,6 (g)
Lời giải:
$22+23-25+27-29+31-33$
$=22+(23-25)+(27-29)+(31-33)$
$=22+(-2)+(-2)+(-2)=22+(-2).3=22-6=16$
42:y=6
y=42:6=7
Vậy giá trị thích hợp để 42:y=6 là 7
Hok tốt!
Câu : This summer 2017 is very hot .
Câu hỏi : What is the weather in summer 2017 ?
Ai giúp mình với! Đang cần gấp hạn nộp là mai rồi các bạn giải thì kèm theo giải thích hộ mifng với cô bắt giải thích!!!!
Exercise 1: Find the word which has a different sound in the part underlined
1. A. prefer | B. better | C. teacher | D. worker |
2. A. future | B. return | C. picture | D. culture |
3. A. pottery | B. flower | C. silent | D. service |
4. A. girl | B. expert | C. open | D. burn |
5. A. worst | B. learn | C. control | D. dessert |
Exercise 2: Put the verb in brackets in the correct verb form
1. I (see)___will see___ a film this Sunday evening. (you/ go) __Will you go___ with me?
2. They (give)___will give__a party next week.
3. The members of the stamp collectors’ club (meet)__will meet____ at the library next Friday.
4. (you/ be)____You will be____ free next Sunday.
5. We (live)___live___ near Nam’s house, but we (not see)___don't see____him very often.
6. Don’t worry. I (go)__will go____fishing with you next Saturday morning.
Trang Trần
Exercise 1: Find the word which has a different sound in the part underlined
1. A. prefer /3:/ | B. better /ər/ | C. teacher /ər/ | D. worker /ər/ |
2. A. future /tʃər/ | B. return /tɜːn/ | C. picture /tʃər/ | D. culture /tʃər/ |
3. A. pottery /ə/ | B. flower /ə/ | C. silent /ə/ | D. service /ɜː/ |
4. A. girl /ɜː/ | B. expert /ɜː/ | C. open /ə/ | D. burn /ɜː/ |
5. A. worst /ɜː/ | B. learn /ɜː/ | C. control /əʊ/ | D. dessert /ɜː/ |
Exercise 2: Put the verb in brackets in the correct verb form
1. I (see)___will see___ a film this Sunday evening (Thì tương lai đơn). (you/ go) __Will you go___ with me?
2. They (give)___will give__a party next week (Thì tương lai đơn).
3. The members of the stamp collectors’ club (meet)__will meet____ at the library next Friday(Thì tương lai đơn).
4. (you/ be)____You will be____ free next Sunday (Thì tương lai đơn).
5. We (live)___live___ near Nam’s house, but we (not see)___don't see____him very often (Thì hiện tại đơn).
6. Don’t worry. I (go)__will go____fishing with you next Saturday morning (Thì tương lai đơn).
=10(dư 1)
\(\dfrac{31}{3}\)