Cho CBHH N2 + 3 H2   ----> 2 NH3
                                     <----
ở TTCB C N2 = 0,00402M
              C H2 = 0,1200 M và K C = 0,1050
Tính C NH3

Trong mặt phẳng Oxy, cho tam giác ABC với A(1;1), B(3;5) và C(5;-1)
a) tìm tọa độ trọng tâm G và tính chu vi của Tam giác ABC
b) tìm tọa độ điểm D để tứ giác ABCD là hình thang với đáy lớn BC và
BC = 2AD

Part 2. Read the text below and fill in each gap with ONE suitable word. Write the answers in the corresponding numbered boxes provided.

HOME GYM?

            Do you want to get fitter, but it seems difficult to know where to start? Perhaps you’d (16) ______ not join in a sports class, or you’re not allowed to (17) ______ up any expensive new hobbies? Then maybe you (18) ______ consider the “home gym”. At the “home gym”, you don’t need to learn (19) ______ new skills, or even buy any equipment. Even better, you can even impress your family at the (20) ______ time!

            It’s a surprising fact that doing housework can actually burn as (21) ______ fat as doing some sports! (22) ______ someone cleans energetically, their face gets red, they (23) ______ to sweat, they may even get out of breath! That’s because they’re using a lot of energy. Half (24) ______ hour of cooking can burn 40-50 calories, and gardening an impressive 100-200 calories!

            Why (25) ______ ask your parent or partner to allow you to help around the home? They’re bound to agree! If you (26) ______ at least thirty minutes every day doing housework, you’ll soon (27) ______ able to feel a real difference in your health. But you must work (28) ______ hard to get the full benefit - that’s essential. (29) ______ dancing around while you tidy up your room, you may feel silly, (30) ______ you’ll improve your overall fitness, and have more fun too!

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