Làm sao để tính phép trừ phân số

Cho 11,2 lít (đktc) hỗn hợp khí gồm oxi và clo tác dụng vừa đủ với hỗn hợp chứa 0,1 mol Ca và 0,3 mol Al thu được m gam hỗn hợp muối và oxit. Giá trị của m là bao nhieu ?

tìm nghiệm nguyên của ptr: x^2-(2007+y)x+3+y=0 help me:(( thank u!!!!

Thủ tướng phát lệnh rồi, em đã nghe rõ chưa “Trong cuộc chiến này sẽ không có một ai bị để lại” Chẳng có điều gì làm cho mình sợ hãi Khi trong mỗi người nhân ái được gọi tên. Từ mái trường này em sẽ lớn lên Sẽ khắc trong tim bóng hình đất nước Cô sẽ nối những nhịp cầu mơ ước Để em vẽ hình Tổ quốc ở trong tim. Nhớ nghe em, ta chẳng phải đi tìm Một đất nước ở đâu xa để yêu hết cả Đảng đã cho ta trái tim hồng rạng tỏa Vang vọng trong lòng hai tiếng gọi Việt Nam! Câu 1 phong cách ngôn ngữ trong đoạn trên câu 2 nội dung chính câu 3 thông điệp được thể hiện thông qua câu:" Trong cuộc chiến này sẽ không có một ai bị để lại" là gì??

Sưu tầm 5 bài hát về tính giản dị của Bác Hồ

Một hỗn hợp khí A có thành phần về thể tích các khí như sau : 40% CO2 , 20% H2, 40% X2, biết dA/H2 là 14,6. Xác định khí X2, biết rằng không có phản ứng xảy ra giữa các khí này.

Finish the second sentence so that it has the same meaning as the given one, using the given words. This film is more interesting than that one. -> That film is _________________________________. My kitchen is smaller than yours. -> Your kitchen ________________________________. My grandmother is older than everyone in my family. -> My grandmother is the ____________________. No one in my class is as tall as Tam. -> Tam is the __________________________________. No hotel in the city is as comfortable as this. -> This hotel is the _________________________.

Sắp xếp các nguyên tố sau theo tính kim loại giảm dần và giải thích : Al, Na, Mg. K

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BENEFITS OF WATCHING TV FOR KIDS Television does, in fact, have a positive influence on children, because it is quite educational. Educational programming, like Sesame Street and related shows, can help teach kids letters, numbers and important concepts that will help them thrive and take care of themselves later in life. Also, much of children’s programming can help stimulate and develop their imaginations, leading them to lives of creativity. TV can help kids learn about a variety of subjects. If there’s a subject your child enjoys, more likely than not, there is a TV show, movie, or educational DVD that explores the subject in detail. You might be even be surprised to find out how many kids watch and love educational shows aimed at adults. Rachael Ray, for example has a huge following among kids and tweens, and herprimetime show often features kids in the kitchen. Children’s shows, whether they bill themselves as “educational” or not, may offer opportunities to spark learning. For instance, was your child wowed by the Red Eyed Tree Frog on Go, Diego, Go!? Go online to look at pictures and read about the frog. In this way, kids are able to see how fun learning can be and establish a habit of finding out more when things interest them. Documentary and nature shows are also entertaining and educational for kids. A great example: Meerkat Manor, on the Animal Planet, makes a soap opera out of meerkat life and has kids hooked on the drama. TV and movies can motivate kids to read books. Of the new movies that are released each year, you can bet that several of them are based on books. Parents can challenge kids to read a book with the promise of going to the theater or renting the movie when they finish it. Or, kids may see a movie and like it so much that they decide to read the book. Discuss the differences between the book and the movie to help kids develop thinking skills. Kids can build analytical skills by discussing media. What do you think will happen next? Who did it? What will the result be? What could that character have done instead? Asking these types of questions as you co-view with your children will help them learn to think, problem solve, and predict, making TV viewing a more active experience. More important than just memorizing facts, developing thinking skills will benefit them for the rest of their lives. Good role models and examples on TV can positively influence kids. Children are influenced by people they see on television, especially other kids. Lately, kids’ TV shows have begun promoting some positive trends such as healthy living and environmental awareness. As kids see their favorite characters making positive choices, they will be influenced in a good way. Mấy thần tài tiếng anh or mấy ac chuyên anh ơi , làm hộ bài này với ạ, tóm tắt vừa đủ ý nhưng đừng dài qua( tầm bằng gần nửa bài này) vote+ hay nhất+ cảm ơn(NHỚ LÀ ĐỦ Ý NHÉ Ạ!!) #Lớp 6 TA