Question

£¨7·Ö£©ÊµÑéÊÒÓûÅäÖÆ100gÈÜÖÊÖÊÁ¿·ÖÊýΪ10%µÄÂÈ»¯ÄÆÈÜÒº¡£ÅäÖƲ½ÖèΪ£º
£¨1£©ÐèÂÈ»¯ÄƹÌÌåºÍË®µÄÖÊÁ¿¸÷¶àÉÙ¿Ë?
£¨2£©Á¿È¡Ë®×îºÃÑ¡Ôñ_______µÄÁ¿Í²£¨ÌîÐòºÅ¢Ù10mL¢Ú50mL¢Û100mL£©£¨Ë®µÄÃܶÈΪ1g/cm³£©¡£
£¨3£©½«ÂÈ»¯ÄƹÌÌåÈÜÓÚË®£¬Óà       ½Á°è£¬Ê¹ÂÈ»¯ÄÆÈ«²¿Èܽ⣬ÀäÈ´ÖÁÊÒÎÂ,×°Æ¿´¢´æ¡£
£¨4£©Èô½«100gÈÜÖÊÖÊÁ¿·ÖÊýΪ10%µÄÂÈ»¯ÄÆÈÜҺϡÊͳÉ5%µÄÈÜÒº£¬ÐèÒª¼ÓË®µÄÖÊÁ¿¶àÉÙg?

Answer 1

£¨1£©ÈÜÖÊ¡ªÂÈ»¯ÄƹÌÌ壺10g ÈܼÁ¡ªË®£º90g
£¨2£©¢Û      £¨3£©²£Á§°ô      £¨4£©Ðè¼ÓË®µÄÖÊÁ¿Îª100 g 

£¨1£©ÈÜÖÊÖÊÁ¿=ÈÜÒºÖÊÁ¿¡ÁÈÜÖÊÖÊÁ¿·ÖÊý=100g¡Á10%=10g£¬ËùÒÔÈܼÁÖÊÁ¿Îª£º100g-10g=90g£¬
£¨2£©Á¿È¡90mLµÄˮѡÓÃ100mLµÄÁ¿Í²¿ÉÒ»´ÎÁ¿³ö90mLµÄË®£®
£¨3£©²£Á§°ô½Á°èÊǼÓËÙ¹ÌÌåÈܽâµÄ
£¨4£©¸ù¾ÝÈÜҺϡÊÍÇ°ºóµÄÈÜÖÊÖÊÁ¿²»±ä½øÐзÖÎö
£¨1£©½â£ºÂÈ»¯ÄƵÄÖÊÁ¿=100g¡Á10%=10g                ¡­¡­1·Ö
Ë®µÄÖÊÁ¿=100g-10g=90g                 ¡­¡­1·Ö
£¨4£©½â£º
·½·¨Ò»£ºÉèÐè¼ÓË®µÄÖÊÁ¿Îªx
100g¡Á10%=£¨100 g+x£©¡Á5%                ¡­¡­1·Ö
½âµÃ£ºx="100" g                            ¡­¡­1·Ö
´ð£ºÐè¼ÓË®µÄÖÊÁ¿Îª100 g ¡£              ¡­¡­1·Ö
·½·¨¶þ£º100gÂÈ»¯ÄÆÈÜÒºÈÜÖʵÄÖÊÁ¿=100g¡Á10%=10g
Ï¡ÊͺóÈÜÒºµÄÖÊÁ¿="10g¡Â5%=200" g              ¡­¡­1·Ö
Ðè¼ÓË®µÄÖÊÁ¿="200" g-100g=100g            ¡­¡­1·Ö
´ð£ºÐè¼ÓË®µÄÖÊÁ¿Îª100 g                     ¡­¡­1·Ö