下表是某兴趣小组通过实验获得的稀硫酸与某金属反应的实验数据：_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题填空题

下表是某兴趣小组通过实验获得的稀硫酸与某金属反应的实验数据：

实验序号	金属质量/g	金属状态	c(H₂SO₄) mol/L	V(H₂SO₄) mL	溶液温度/℃		金属消失的时间/s
实验序号	金属质量/g	金属状态	c(H₂SO₄) mol/L	V(H₂SO₄) mL	反应前	反应后	金属消失的时间/s
1	0.10	丝	0.7	50	20	36	250
2	0.10	丝	0.8	50	20	35	200
3	0.10	丝	1.0	50	20	35	125
4	0.10	丝	1.0	50	35	50	50

分析上述数据，回答下列问题：

（1）上述反应中，反应物的总能量比生成物的总能量（选填“高”、“低”或“相等”）。

（2）实验1、2可得出的结论是；

实验3、4可得出的结论是。

（3）若将该金属与铁用导线连接，插入盛有稀硫酸的烧杯中制作成原电池，观察到铁的表面有大量气泡。该金属的金属活动性比铁（选填“强”或“弱”），铁电极上发生的电极反应式为。

答案

（12分）

（1）高（2分）；

（2）反应物浓度越大，反应速率越快（3分）

反应温度越高，反应速率越快（3分）

（3）强（2分） 2H⁺+2e^－＝H₂↑ （2分）

选择题

现代人猿和人类共同起源于（）

A．森林古猿

B．猕猴

C．猩猩

D．长臂猿

填空题

Bill Gates receives honorary knighthood

Britain’s Queen Elizabeth stands with Microsoft chairman and philanthropist Bill Gates after presenting him with an honorary knighthood at Buckingham Palace, London, March 2, 2005.
Sir Bill Not quite. Proclaiming himself "humbled and delighted," Microsoft founder Bill Gates received an honorary knighthood Wednesday from Queen Elizabeth Ⅱ—an accolade that allows the recipient to use "KBE" after his (1) , but not to put "Sir" in front of it.
One of the world’s richest men, Gates, 49, was (2) honored for his charitable activities around the world and his contribution (3) enterprises in Britain.
Past recipients of the honorary knighthood (4) from Irish singer Bob Geldof to former U.S. President Ronald Reagan.
"This (5) is particularly poignant given the deep connections Microsoft enjoys (6) the United Kingdom," said Gates, whose company employs about 2000 people in (7) .
Gates’ royal honor—bestowed by the queen on the advice of the (8) —was announced in January 2004, but a "mutually convenient" date to (9) it had not been available until now.
British recipients of knighthoods are entitled to be (10) with a "Sir" before their names. The honor was long the (11) of senior soldiers, judges and other servants of the state, but recent years have seen the creation of Sir Paul McCartney, (12) Mick Jagger and Sir Elton John.
As an American, Gates is not entitled to use (13) before his name, but he can put the initials KBE—Knight Commander of the (14) Empire—after his name.
Gates joins a roster of American (15) that includes former presidents Reagan and George H.W. Bush, comedian (16) Hope, retired U.S. Army Gen. Tommy Franks and former Secretary of (17) Colin Powell.
Gates said he was proud of what he called (18) "special relationship" with Britain.
"The U.K. was the first country in (19) Microsoft set up a subsidiary outside the U.S., and our experience in the (20) has been significant in shaping our international growth," he said.
Microsoft’s British facilities include Research Cambridge, a laboratory established in 1997 in the university town that employs 80 scientists. In 2000, the Bill & Melinda Gates Foundation announced a donation of $210 million to Cambridge University to create a scholarship program for graduate students from outside Britain.