化学摩尔质量公式中的N怎么算 高一化学摩尔质量怎么算?有什么公式吗?
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n=m/Mm=pVN=nNAn\u4e3a\u7269\u8d28\u7684\u91cf\uff0c\u5355\u4f4d\u4e3a\u6469\u5c14\uff08mol\uff09\u3002
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N\u4e3a\u539f\u5b50\u6216\u5206\u5b50\u7684\u4e2a\u6570\uff0c\u5355\u4f4d\u4e3a1\uff0c\u4e5f\u53ef\u770b\u4f5c\u6ca1\u6709\u5355\u4f4d\uff1bNA\u4e3a\u963f\u4f0f\u52a0\u5fb7\u7f57\u5e38\u6570\uff0c\u6570\u503c\u4e3a6.02*10^23\u6bcf\u6469\uff08mol^-1\uff09\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c1mol\u7684\u539f\u5b50\u6216\u5206\u5b50\u90fd\u67096.02*10^23\u4e2a\u3002
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\u6269\u5c55\u8d44\u6599\uff1a
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n=m/M m---质量 M----摩尔质量
n=微粒数量/NA NA----阿佛加德罗常数
n=气体体积/22.4(标准状况下)
n=m/M (m:质量 M:式量 n:物质的量),m是骑在M的头上。
是个常数,6.02*10的23次方
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绛旓細1.n=m/M 姝鍏紡涓璶浠h〃鎽╁皵璐ㄩ噺锛堝崟浣嶏細mol锛夛紱m浠h〃璇ョ墿璐ㄧ殑璐ㄩ噺锛堝崟浣嶏細g銆並g锛夛紱M浠h〃璇ョ墿璐ㄧ殑鍒嗗瓙閲忥紙鍗曚綅锛歡/mol銆並g/mol锛2.n=N/Na 姝ゅ叕寮忎腑n浠h〃鎽╁皵璐ㄩ噺锛汵浠h〃绮掑瓙鐨勫叿浣撴暟鐩紝鍗崇矑瀛愮殑涓暟锛汵A浠h〃闃夸紡鍔犲痉缃楀父鏁帮紝涓鑸璁$畻鏃跺彇6.02脳10^23鎴6.022脳10^23銆
绛旓細鎽╁皵璐ㄩ噺鐨勮绠楀叕寮涓猴細M锛坓/mol锛=m锛坓锛/n锛坢ol锛夈傚叾涓紝m锛坓锛夋槸鐗╄川鐨勮川閲忥紝n锛坢ol锛夋槸鐗╄川鐨勬懇灏旀暟銆1銆佹懇灏旇川閲忔槸涓涓墿璐ㄧ殑鍗曚綅璐ㄩ噺锛岃〃绀烘瘡鎽╁皵璇ョ墿璐ㄧ殑璐ㄩ噺銆傝繖涓鍏紡鐨瑙i噴鏄紝鐗╄川鐨勬懇灏旇川閲忔槸鍏跺崟浣嶈川閲忥紝涔熷氨鏄瘡鎽╁皵璇ョ墿璐ㄧ殑璐ㄩ噺銆傚湪鍖栧涓锛岀墿璐ㄧ殑鎽╁皵璐ㄩ噺鏄 閲忕墿璐ㄥ湪鍗曚綅璐ㄩ噺涓...
绛旓細N浠h〃绮掑瓙鏁扮洰锛孧浠h〃鎽╁皵璐ㄩ噺锛n浠h〃鐗╄川鐨勯噺銆傛懇灏旇川閲(M) 鍗曚綅 g/mol (鍏紡M=m/n)瀹氫箟锛氬崟浣嶇墿璐ㄧ殑閲忕殑鐗╄川鎵鍏锋湁鐨勮川閲(1mol鐗╄川鐨勮川閲忥級鍙懇灏旇川閲忥紝鍗1mol璇ョ墿璐ㄦ墍鍏锋湁鐩稿鍘熷瓙璐ㄩ噺涓鎽╁皵璐ㄩ噺鐨鏁板肩瓑鍚屻傜墿璐ㄧ殑閲忥紙n锛夈佽川閲忥紙m锛夈佹懇灏旇川閲忥紙M锛変箣闂寸殑鍏崇郴涓猴細n=m/M銆
绛旓細鍖栧寮璁$畻鍏紡M=m/n銆乶=N/NA銆亀%=锛坢/M锛墄100%锛屽叿浣撳唴瀹瑰涓嬶細1銆鎽╁皵璐ㄩ噺锛圡锛夛細M=m/n锛岃繖涓叕寮忕敤浜庤绠楃墿璐ㄧ殑鎽╁皵璐ㄩ噺銆傚叾涓紝m鏄墿璐ㄧ殑璐ㄩ噺锛宯鏄墿璐ㄧ殑鐗╄川鐨勯噺銆傛懇灏旇川閲忔槸涓涓父鏁帮紝瀵逛簬涓嶅悓鐨勭墿璐ㄦ潵璇存槸涓嶇浉鍚岀殑銆傞氳繃杩欎釜鍏紡锛屾垜浠彲浠ュ揩閫熷湴璁$畻鍑虹墿璐ㄧ殑鎽╁皵璐ㄩ噺銆2銆佺墿璐ㄧ殑閲...
绛旓細1銆佸湪鐗╃悊瀛︿腑锛n=m/M浠h〃鐗╄川鐨勯噺锛坣锛夌瓑浜庤川閲忥紙m锛夐櫎浠鎽╁皵璐ㄩ噺锛圡锛夈傝繖涓鍏紡鏄鍖栧鍜岀墿鐞嗗涓绠鐗╄川鐨勫熀鏈崟浣嶆懇灏旂殑閲嶈宸ュ叿銆2銆佸湪鐞嗘兂姘斾綋鐘舵佹柟绋婸V=nRT涓紝n琛ㄧず鐨勬槸姘斾綋鐨勭墿璐ㄧ殑閲忥紝R鏄皵浣撳父鏁帮紝鍏跺肩害涓8.31441卤0.00026鐒﹁虫瘡鎽╁皵姣忓紑灏旀枃锛圝/(mol路K)锛夈傝繖涓父鏁板浜庢墍鏈夌殑...
绛旓細锛4锛n=cV锛宑鏄憾娑蹭腑婧惰川鐨勭墿璐ㄧ殑閲忔祿搴︼紙mol/L锛夛紝V鏄憾娑茬殑浣撶Н锛圠锛2銆佺煡閬撳拰鐔熺粌甯歌鐨勮浆鎹㈠強鎺ㄨ鐨鍏紡 锛1锛夌墿璐ㄧ殑閲忔祿搴︼紙c锛変笌璐ㄩ噺鍒嗘暟锛坵锛変箣闂寸殑杞崲 c=1000dw/M锛宒鏄憾娑茬殑瀵嗗害锛坓/cm3锛夛紝M鏄憾璐ㄧ殑鎽╁皵璐ㄩ噺锛坓/mol锛夛紙2锛夐ケ鍜屾憾娑茬殑璐ㄩ噺鍒嗘暟锛坵锛変笌婧惰В搴︼紙s锛変箣闂寸殑杞崲 w...
绛旓細M= m/n锛屽叾涓紝m鏄墿璐ㄧ殑璐ㄩ噺锛屽崟浣嶄负鍗冨厠锛坘g锛夋垨鑰呭厠锛坓锛夛紝n鏄墿璐ㄧ殑鎽╁皵鏁帮紝鍗曚綅涓烘懇灏旓紙mol锛夈傚浜庡師瀛愭垨绂诲瓙锛鎽╁皵璐ㄩ噺鐨勮绠楀叕寮鐩稿悓銆傝繖鏄洜涓哄師瀛愬拰绂诲瓙鏄瀯鎴愮墿璐ㄧ殑鍩虹煶锛屽畠浠殑璐ㄩ噺鐩存帴鍐冲畾浜嗙墿璐ㄧ殑鎬昏川閲忋傛敞鎰忔懇灏旇川閲忕殑鍗曚綅鍙栧喅浜庢墍浣跨敤鐨勮川閲忓崟浣嶃傚湪鍥介檯鍗曚綅鍒讹紙SI锛変腑锛屾懇灏旇川閲忕殑...
绛旓細02 x 1023锛屽崟浣嶆槸姣忔懇灏旓紙mol-1锛夛紝鐢ㄧ鍙種A鏉ヨ〃绀恒傝繖涓父鏁扮殑浣滅敤鏄皢寰矑鐨勬暟閲忚浆鎹负鐗╄川鐨勯噺锛鍏紡涓n = N / NA銆傞氳繃杩欎袱涓叕寮忥紝鎴戜滑鍙互璁$畻鍑虹粰瀹氬井绮掓暟閲忎笅鐨勬懇灏旇川閲忥紝鎴栬呭湪鐭ラ亾鎽╁皵璐ㄩ噺鐨鎯呭喌涓嬶紝璁$畻鍑虹浉搴旂墿璐ㄧ殑鎬婚噺銆傝繖瀵逛簬鍖栧瀹為獙鍜岀悊璁鸿绠椾腑閮芥槸闈炲父閲嶈鐨勫伐鍏枫
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