Ở 250C có 175 gam dung dịch CuSO4 bão hoà. Đun nóng dung dịch đó
lên 900C. Hỏi phải thêm vào dung dịch này bao nhiêu gam CuSO4 để được dung dịch bão
hoà ở nhiệt độ này. Biết độ tan S CuSO4 (25 độ C) = 40 gam
S CuSO4 (90 độ C) = 80 gam

Hòa tan m gam muối kali sunfat (K2SO4) trong nước ở 200C thì thu 200
gam dung dịch bão hòa muối này. Biết độ tan của K2SO4 ở nhiệt độ này là 11,1 gam. Tính giá trị của m.

1 Whatever decision is made often results in a new __________ being created.

Câu trả lời của bạn

2 The first dilemma asks whether it’s __________ to give something back to someone who doesn’t really need it.

Câu trả lời của bạn

3 The second asks you to make a judgement about someone who is only __________ in looks to someone who doesn’t deserve to be saved.

Câu trả lời của bạn

4 It asks whether we should help anyone who is experiencing __________ , regardless of who they are.

Câu trả lời của bạn

5 The third dilemma asks whether we should buy products we know to be __________ in order to save money.

Câu trả lời của bạn

6 It asks whether we would do something wrong, aslong as no-one else will __________ it.

Câu trả lời của bạn

7 The article suggests that many people consider __________ if they think there will be no bad result.

Câu trả lời của bạn

8 It also says that there are more serious __________ to making decisions depending on how much power we have.

1. She paid no attention to my advice and still parties all night.

NOTICE

2. We haven’t received any news from her since June.

HEARD

3. Some of my friends refused to go on the camping trip.

OBJECTED

4. I haven’t contacted my best friend for several months.

TOUCH

5. Was it difficult for you to solve the puzzle?

DIFFICULTY

6. Smoking is harmful to your health.

HARM

7. Mr. Smith was not at the prize-giving ceremony, so his wife accepted the prize for him.

BEHALF

8. If he drives so recklessly, he is certain to have an accident.

BOUND

9. Why didn’t I remember to send him an email last night?

SHOULD

10. I don’t like it when others laugh at me.

LAUGHED