Last Monday, a strong man growing a beard(胡须) arrived at Mr. Li's gold shop by taxi. He told the driver to1. He went into the shop and said, “Hand over your money!”
Mr. Li was busy putting some goods(货物) on the shelf and he didn't hear him clearly. He turned and asked, “2can I do for you, Sir?”
“I told you to give me your money. I have got a gun in my handbag!”
Mr. Li gave him all his money. While the strong man was putting the money into his handbag, Mr. Li took out his own gun from behind. Seeing this, the strong man ran out of the shop with Mr. Li 3 him.
The strong man jumped into the waiting taxi as Mr. Li shouted, “It's a robbery(抢劫)! Stop!" The taxi driver thoug ht Mr. Li wanted to 4 him. So he jumped out of his taxi with his hands5_. Then the strong man 6 with his gun in his hand and pointed it at Mr. Li. Mr. Li pointed his gun at the strong man, too. For almost a minute, they stood face to face and gun to gun, but 7of them fired, because they had toy guns.
Suddenly the strong man 8 his gun and ran down the street away. He stopped a passing car and asked for a ride. The two men in the car were9 to take him along. They were policemen. They gave him a ride straight to 10.
CO2(g)+H2(g)，达到平衡时测得CO2为0.4mol。此时抽出CO和H2O（g）各0.5mol，达到新平衡后，CO2的物质的量为( )