chu vi của bánh xe đó
1,9*3,14=5,966 m
Chu vi bánh xe là :
`1,9 × 3,14 = 5,966 (m)`
ĐS: `5,966 m`
Hòa tan hoàn toàn 4g hỗn hợp gồm 1 kim loại hóa trị II và một kim loại hóa trị III cần dùng hết 0,34 mol HCl. a)Tính thể tích Hiđro thoát ra ở đktc b)Cô cạn dung dịch thu được bao nhiêu gam muối khan c)Nếu biết kim loại hóa trị III là Al và số mol bằng 5 lần số mol kim loại hóa trị II thì kim loại hóa trị II là nguyên tố nào
Giúp e m với ạ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 1. If I (to come) ____________ home earlier, I (to prepare) ______________ dinner. 2. If we (to live) ______________ in Rome, Francesco (to visit) ____________ us. 3. If Tim and Tom (to be) ___________ older, they (to play) ___________ in our hockey team. 4. If he (to be) ______________ my friend, I (to invite) _____________ him to my birthday party. 5. If Susan (to study) ________________ harder, she (to be) ______________ better at school. 6. If they (to have) ______________ enough money, they (to buy) ______________ a new car. 7. If you (to do) _____________ a paper round, you (to earn) _____________ a little extra money. 8. If Michael (to get) _____________ more pocket money, he (to ask) _____________ Doris out for dinner. 9. If we (to hurry) ___________, we (to catch) _____________ the bus. 10. If it (to rain) ______________, Nina (to take) ______________ an umbrella with her. PART 2 1. He (come) _______ if you waited. 2. If you (ring) _______ the bell, the servant would come. 3. If it (not, rain) _______ a lot, the rice crop wouln’t grow. 4. If today (be) _______ Sunday, we wouldn’t have to work 5. You would have to stay in bed unless your health (improve) _______. 6. If I (not have) ________ a typewriter, I could type it myself. 7. What (you do) ________ if you got fat ? 8. They would not be paid unless they (do) _______________ their work well. 9. If I became very rich, I (build) _______________ a hospital for the poor. 10. If he (give) _______________ up smoking, as his doctor orders, he will be soon well again. 11. You would have to stay in bed unless your health (improve) _______________. 12. If I (have) ________________ a typewriter, I could type it myself. 13. You could make much progress if you (attend) ________________ class regularly. 14. If I (know) ________________ his telephone number, I would give it to you. 15. If he (study) ________________ harder, he can pass an exam. PART 3 1. If I (have) ________________ a typewriter, I could type it myself. 2. You could make much progress if you (attend) ________________ class regularly. 3.If I (know) ________________ his telephone number, I would give it to you. 4. If you are kind to me, I (be) _______________ good to you. 5. He (come) _______________ if you waited. 6. If he (study) ________________ harder, he can pass an exam. 7. She may be late if she (not hurry) ________________. 8. What (you do) ________________ if you got fat? 9. f you (ring) _______________ the bell, the servant would come. 10. If it (not, rain) _______________ a lot, the rice crop wouldn’t grow.
Tìm hoá trị của R trong hợp chất RxOy Viết phương trình phản ứng của R với HCl Làm giúp e bài này với e cần gấp lắm ạ
Cho phương trình: ( 1 – m)x = m - 1 (1) Giải và biện luận phương trình (1)
Mn người giải giúp em đề 2 vs ạ !!!!!!!!!! Em cảm ơn trước
Giúp em bài này với ạ! Cảm ơn nhiều!!!!!!!!!!!!!!!!!!!!!! XV Rewrite the following sentences based on the given words. 1.People don’t care much about environment, so they keep making it worse. →If people 2.She suffered from a serious disease because of drinking contaminated water in a long time. →Since 3.The drainage system is damaged. There is not enough water for the crop. →If the drainage system 4.“Why don’t you turn off more lights in the house to reduce your eyestrain?” →If I 5.The improvements of the public transport system will encourage more people to use it. →If
Trong tinh thể nêu khái niệm ô cơ sở ,số phối trí ,số đơn vị cấu trúc
a)tính đường kính hình tròn có chi c=15,7m b) tính bán kính hình tròn có chu vi c=18,84dm
tính tổng S= 9+99+.....+99....9 ( n số 9 ) S = 7+77+......+77...7 ( n số 7 )
lim (x->2) căn8x-4/căn(14x-1)-3 Em giải mãi k ra đc đáp án như trong máy tính ai 😭
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