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20.10. Câu nào sau đây nói về sự nở vì nhiệt của các chất khí ô-xi, hi-đrô và cac-bo-nic là đúng khi làm thí nghiệm như mô tả ở bài 20.9 với các chất khí này?

A. Hi-đrô nở vì nhiệt nhiều nhất.

B. Cac-bo-nic nở vì nhiệt ít nhất,

C. Ô-xi nở vì nhiệt ít hơn hi-đrô nhưng nhiều hơn cac-bo-nic.

D. Cả ba chất đều nở vì nhiệt như nhau.

Chọn D. Từ thí nghiệm như mô tả ở bài 20.9 về sự nở vì nhiệt của các chất khí ô- xi, hi-đrô và các-bô-níc ta thấy cả ba chất đều nở vì nhiệt như nhau.

Chọn câu D bạn nhé!

ròi bn ưi

tíc cho mkik

k đi

tui k cho

hok tốt

kb nha

5 + 5 = 10

bằng 10 nha bạn

10nha

tíc mình

mình tíc lại

17 k nha

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Tổng là:

   12 + 5 = 17

         Đáp số:17

12+5=17 nha

50+5=55

kb mk nha

k luôn nha

55 nha bạn

chúc bạn học giỏi hơn

tk mình mình tk lại

Tổng là:

   50 +5 = 55

        Đáp số:55

6 k nha

Tổng là:

    1 + 5 = 6

       Đáp số:6

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1+5=6 mik nha

1+5=6 Tích dùm mình ạ cảm oen

1 + 5 = 6

k mình nhé Nguyễn Thị Thu 

1 + 9 + 5

= 10 + 5

= 15

k mik nha, k lại

Tổng là:

    1 + 9 + 5 = 15

            Đáp số:15

15 k nha

k quả của phép tính là :

 5 + 5 = 10

 đáp số : 10

k nhé

=10 nha

₫ăđ 

k mk mk k laij nhaLy Xg