{"id":785,"date":"2026-10-08T16:42:49","date_gmt":"2026-10-08T09:42:49","guid":{"rendered":"https:\/\/giapsgk.com\/chuyen-de\/?p=785"},"modified":"2026-10-08T16:42:49","modified_gmt":"2026-10-08T09:42:49","slug":"giai-de-thi-thu-tot-nghiep-thpt-2027-mon-vat-li-lan-3","status":"publish","type":"post","link":"https:\/\/giapsgk.com\/chuyen-de\/giai-de-thi-thu-tot-nghiep-thpt-2027-mon-vat-li-lan-3\/","title":{"rendered":"Gi\u1ea3i \u0111\u1ec1 thi th\u1eed t\u1ed1t nghi\u1ec7p THPT 2027 m\u00f4n V\u1eacT L\u00cd l\u1ea7n 3"},"content":{"rendered":"

K\u1ef3 thi t\u1ed1t nghi\u1ec7p THPT 2027 \u0111ang \u0111\u1ebfn g\u1ea7n, vi\u1ec7c luy\u1ec7n \u0111\u1ec1 v\u00e0 l\u00e0m quen v\u1edbi c\u1ea5u tr\u00fac c\u00e2u h\u1ecfi l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng gi\u00fap h\u1ecdc sinh l\u1edbp 12 c\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c v\u00e0 n\u00e2ng cao k\u1ef9 n\u0103ng l\u00e0m b\u00e0i. \u0110\u1ec1 thi th\u1eed t\u1ed1t nghi\u1ec7p THPT 2027 m\u00f4n V\u1eadt l\u00ed l\u1ea7n 3<\/strong> l\u00e0 t\u00e0i li\u1ec7u h\u1eefu \u00edch \u0111\u1ec3 c\u00e1c em ki\u1ec3m tra m\u1ee9c \u0111\u1ed9 n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c, r\u00e8n luy\u1ec7n t\u1ed1c \u0111\u1ed9 l\u00e0m b\u00e0i v\u00e0 ph\u00e1t hi\u1ec7n nh\u1eefng ph\u1ea7n c\u00f2n y\u1ebfu. Trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y, ch\u00fang t\u00f4i s\u1ebd gi\u1ea3i chi ti\u1ebft \u0111\u1ec1 thi th\u1eed t\u1ed1t nghi\u1ec7p THPT 2027 m\u00f4n V\u1eadt l\u00ed l\u1ea7n 3<\/strong>, gi\u00fap h\u1ecdc sinh hi\u1ec3u r\u00f5 ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i v\u00e0 ch\u1ee7 \u0111\u1ed9ng \u00f4n t\u1eadp hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n

C\u00e2u tr\u1eafc nghi\u1ec7m \u0111\u00fang sai.<\/strong><\/h2>\n

Th\u00ed sinh tr\u1ea3 l\u1eddi t\u1eeb c\u00e2u 1 \u0111\u1ebfn c\u00e2u 4. Trong m\u1ed7i \u00fd a), b), c), d) \u1edf m\u1ed7i c\u00e2u, th\u00ed sinh ch\u1ecdn \u0111\u00fang ho\u1eb7c sai.<\/p>\n

C\u00e2u 1:<\/strong> Ng\u01b0\u1eddi ta cung c\u1ea5p nhi\u1ec7t l\u01b0\u1ee3ng Q \u0111\u1ec3 l\u00e0m n\u00f3ng ch\u1ea3y 100 g n\u01b0\u1edbc \u0111\u00e1 \u1edf \u221220$^{\u2218}$C. Bi\u1ebft nhi\u1ec7t n\u00f3ng ch\u1ea3y ri\u00eang c\u1ee7a n\u01b0\u1edbc \u0111\u00e1 l\u00e0 3,34. 10$^{5}$ J\/kg, nhi\u1ec7t dung ri\u00eang c\u1ee7a n\u01b0\u1edbc \u0111\u00e1 l\u00e0 2,1. 10$^{3}$ J\/kgK.<\/p>\n

\"Gi\u1ea3i<\/p>\n

a) Nhi\u1ec7t l\u01b0\u1ee3ng c\u1ea7n cung c\u1ea5p \u0111\u1ec3 l\u00e0m t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a 100 gam n\u01b0\u1edbc \u0111\u00e1 l\u00ean 0$^{\u2218}$C l\u00e0 4500 (J)<\/p>\n

b) Nhi\u1ec7t l\u01b0\u1ee3ng c\u1ea7n cung c\u1ea5p \u0111\u1ec3 l\u00e0m n\u00f3ng ch\u1ea3y c\u1ee7a 100 g n\u01b0\u1edbc \u0111\u00e1 \u1edf \u221220$^{\u2218}$C l\u00e0 37600 J<\/p>\n

c) Nhi\u1ec7t l\u01b0\u1ee3ng c\u1ea7n cung c\u1ea5p \u0111\u1ec3 l\u00e0m n\u00f3ng ch\u1ea3y c\u1ee7a 100 g n\u01b0\u1edbc \u0111\u00e1 \u1edf 0$^{\u2218}$C l\u00e0 4340 J<\/p>\n

d) Nhi\u1ec7t l\u01b0\u1ee3ng c\u1ea7n cung c\u1ea5p \u0111\u1ec3 l\u00e0m n\u00f3ng ch\u1ea3y ho\u00e0n to\u00e0n 100 g n\u01b0\u1edbc \u0111\u00e1 \u1edf \u221220$^{\u2218}$C cho \u0111\u1ebfn khi n\u01b0\u1edbc b\u1eaft \u0111\u1ea7u s\u00f4i l\u00e0 36700 J<\/p>\n

C\u00e2u 2:<\/strong> M\u1ed9t \u1ea5m \u0111i\u1ec7n c\u00f3 c\u00f4ng su\u1ea5t 1000 W ch\u1ee9a 300 g n\u01b0\u1edbc \u1edf 20$^{\u2218}$C \u0111\u1ebfn khi s\u00f4i \u1edf \u00e1p su\u1ea5t ti\u00eau chu\u1ea9n. Cho nhi\u1ec7t dung ri\u00eang v\u00e0 nhi\u1ec7t h\u00f3a h\u01a1i ri\u00eang c\u1ee7a n\u01b0\u1edbc l\u1ea7n l\u01b0\u1ee3t l\u00e0 4,2. 10$^{3}$ J\/kg.K v\u00e0 2, 26.10$^{6}$ J\/kg.<\/p>\n

a) Nhi\u1ec7t l\u01b0\u1ee3ng \u0111\u1ec3 l\u00e0m n\u00f3ng 300 g n\u01b0\u1edbc t\u1eeb 20$^{\u2218}$C \u0111\u1ebfn 100$^{\u2218}$C l\u00e0 100800 J<\/p>\n

b) Th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111un n\u01b0\u1edbc trong \u1ea5m \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 s\u00f4i l\u00e0 100,8 ph\u00fat<\/p>\n

c) Nhi\u1ec7t l\u01b0\u1ee3ng c\u1ea7n cung c\u1ea5p \u0111\u1ec3 200 g n\u01b0\u1edbc h\u00f3a h\u01a1i ho\u00e0n to\u00e0n \u1edf 100$^{\u2218}$C l\u00e0 678.10$^{6}$ J<\/p>\n

d) Sau khi n\u01b0\u1edbc \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 s\u00f4i, ng\u01b0\u1eddi ta \u0111\u1ec3 \u1ea5m ti\u1ebfp t\u1ee5c \u0111un n\u01b0\u1edbc s\u00f4i trong 226 gi\u00e2y. Kh\u1ed1i l\u01b0\u1ee3ng n\u01b0\u1edbc c\u00f2n l\u1ea1i trong \u1ea5m l\u00e0 100 g.<\/p>\n

C\u00e2u 3:<\/strong> Khi n\u00f3i v\u1ec1 m\u1ea1ng tinh th\u1ec3 ph\u00e1t bi\u1ec3u n\u00e0o sau \u0111\u00e2y l\u00e0 \u0110\u00fang, Sai?<\/p>\n

a) T\u00ednh tu\u1ea7n ho\u00e0n trong kh\u00f4ng gian c\u1ee7a tinh th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ea1ng tinh th\u1ec3.<\/p>\n

b) M\u1ea1ng tinh th\u1ec3 c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c ch\u1ea5t \u0111\u1ec1u c\u00f3 h\u00ecnh d\u1ea1ng gi\u1ed1ng nhau.<\/p>\n

c) Trong m\u1ea1ng tinh th\u1ec3, c\u00e1c h\u1ea1t c\u00f3 th\u1ec3 l\u00e0 ion d\u01b0\u01a1ng, ion \u00e2m, c\u00f3 th\u1ec3 l\u00e0 nguy\u00ean t\u1eed hay ph\u00e2n t\u1eed.<\/p>\n

d) Trong m\u1ea1ng tinh th\u1ec3, gi\u1eefa c\u00e1c h\u1ea1t \u1edf n\u00fat m\u1ea1ng lu\u00f4n c\u00f3 l\u1ef1c t\u01b0\u01a1ng t\u00e1c, l\u1ef1c t\u01b0\u01a1ng t\u00e1c n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng duy tr\u00ec c\u1ea5u tr\u00fac m\u1ea1ng tinh th\u1ec3.<\/p>\n

C\u00e2u 4:<\/strong> T\u1eeb h\u1ec7 th\u1ee9c: $ c=\\frac{Q}{m\\Delta t} $<\/p>\n

a) \u0110\u01a1n v\u1ecb c\u1ee7a c l\u00e0 J\/kgK<\/p>\n

b) \u0110\u00e2y l\u00e0 c\u00f4ng th\u1ee9c t\u00ednh nhi\u1ec7t dung ri\u00eang<\/p>\n

c) Kh\u1ed1i l\u01b0\u1ee3ng: l\u00e0 l\u01b0\u1ee3ng ch\u1ea5t ch\u1ee9a trong v\u1eadt. \u0110\u01a1n v\u1ecb c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 kil\u00f4gam (kg).<\/p>\n

d) Nhi\u1ec7t l\u01b0\u1ee3ng: l\u00e0 n\u0103ng l\u01b0\u1ee3ng m\u00e0 v\u1eadt thu khi thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9. \u0110\u01a1n v\u1ecb c\u1ee7a nhi\u1ec7t l\u01b0\u1ee3ng l\u00e0 Joule (J).<\/p>\n

C\u00e2u tr\u1eafc nghi\u1ec7m tr\u1ea3 l\u1eddi ng\u1eafn. <\/strong><\/h2>\n

Th\u00ed sinh tr\u1ea3 l\u1eddi t\u1eeb c\u00e2u 1 \u0111\u1ebfn c\u00e2u 6.<\/strong><\/p>\n

C\u00e2u 1:<\/strong> Ng\u01b0\u1eddi ta th\u1ef1c hi\u1ec7n c\u00f4ng 200 J \u0111\u1ec3 n\u00e9n kh\u00ed trong m\u1ed9t xilanh. Bi\u1ebft kh\u00ed truy\u1ec1n ra m\u00f4i tr\u01b0\u1eddng xung quanh nhi\u1ec7t l\u01b0\u1ee3ng 40 J. \u0110\u1ed9 bi\u1ebfn thi\u00ean n\u1ed9i n\u0103ng c\u1ee7a kh\u00ed l\u00e0 bao nhi\u00eau Jun?<\/p>\n

C\u00e2u 2:<\/strong> Bi\u1ebft nhi\u1ec7t n\u00f3ng ch\u1ea3y ri\u00eang c\u1ee7a n\u01b0\u1edbc \u0111\u00e1 l\u00e0 \u03bb = 3,4. 10$^{5}$ J\/kg. Nhi\u1ec7t l\u01b0\u1ee3ng c\u1ea7n cung c\u1ea5p \u0111\u1ec3 l\u00e0m n\u00f3ng ch\u1ea3y 300 g n\u01b0\u1edbc \u0111\u00e1 \u1edf 0$^{\u2218}$C b\u1eb1ng bao nhi\u00eau kJ?<\/p>\n

C\u00e2u 3:<\/strong> M\u1ed9t th\u00f9ng \u0111\u1ef1ng 20 l\u00edt n\u01b0\u1edbc \u1edf nhi\u1ec7t \u0111\u1ed9 20$^{\u2218}$C. Cho kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang c\u1ee7a n\u01b0\u1edbc l\u00e0 1000 kg\/m$^{3}$ v\u00e0 nhi\u1ec7t dung ri\u00eang c\u1ee7a n\u01b0\u1edbc l\u00e0 4186 J\/kg. K. D\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb \u0111i\u1ec7n c\u00f3 c\u00f4ng su\u1ea5t 2,5 kW \u0111\u1ec3 \u0111un l\u01b0\u1ee3ng n\u01b0\u1edbc tr\u00ean l\u00ean t\u1edbi 70$^{\u2218}$C th\u00ec th\u1eddi gian truy\u1ec1n nhi\u1ec7t l\u01b0\u1ee3ng c\u1ea7n thi\u1ebft l\u00e0 bao nhi\u00eau gi\u00e2y? Bi\u1ebft ch\u1ec9 c\u00f3 70% \u0111i\u1ec7n n\u0103ng ti\u00eau th\u1ee5 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 l\u00e0m n\u00f3ng n\u01b0\u1edbc.<\/p>\n

C\u00e2u 4:<\/strong> Trong th\u00ed nghi\u1ec7m \u0111un n\u00f3ng m\u1ed9t ch\u1ea5t, m\u1ed9t h\u1ecdc sinh thu \u0111\u01b0\u1ee3c \u0111\u1ed3<\/p>\n

th\u1ecb s\u1ef1 thay \u0111\u1ed5i c\u1ee7a nhi\u1ec7t \u0111\u1ed9 theo th\u1eddi gian nh\u01b0 H\u00ecnh 1.2. Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y c\u1ee7a ch\u1ea5t \u0111\u00f3 l\u00e0 bao nhi\u00eau K?<\/p>\n

C\u00e2u 5:<\/strong> \u1ede \u00e1p su\u1ea5t 1 atm, \u0111i\u1ec3m s\u00f4i c\u1ee7a n\u01b0\u1edbc theo thang Kelvin l\u00e0 bao nhi\u00eau? L\u00e0m tr\u00f2n \u0111\u1ebfn ch\u1eef s\u1ed1 h\u00e0ng \u0111\u01a1n v\u1ecb.<\/p>\n

C\u00e2u 6:<\/strong> L\u1ea5y 0,01 kg h\u01a1i n\u01b0\u1edbc \u1edf 100$^{\u2218}$C cho ng\u01b0ng t\u1ee5 trong b\u00ecnh nhi\u1ec7t l\u01b0\u1ee3ng k\u1ebf ch\u1ee9a 0,2 kg n\u01b0\u1edbc \u1edf 9, 5$^{\u2218}$C. Nhi\u1ec7t \u0111\u1ed9 cu\u1ed1i c\u00f9ng l\u00e0 40$^{\u2218}$C, cho nhi\u1ec7t dung ri\u00eang c\u1ee7a n\u01b0\u1edbc l\u00e0 4180 J\/kg.K. Nhi\u1ec7t h\u00f3a h\u01a1i ri\u00eang c\u1ee7a n\u01b0\u1edbc b\u1eb1ng bao nhi\u00eau (10$^{6}$ J\/kg)? (K\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c l\u00e0m tr\u00f2n \u0111\u1ebfn 1 ch\u1eef s\u1ed1 sau d\u1ea5u ph\u1ea9y th\u1eadp ph\u00e2n)..<\/p>\n\n

\u2b07 T\u1ea3i \u0110\u1ec1<\/a><\/p>\n

\n

\u2b07 T\u1ea3i L\u1eddi Gi\u1ea3i<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

K\u1ef3 thi t\u1ed1t nghi\u1ec7p THPT 2027 \u0111ang \u0111\u1ebfn g\u1ea7n, vi\u1ec7c luy\u1ec7n \u0111\u1ec1 v\u00e0 l\u00e0m quen v\u1edbi c\u1ea5u tr\u00fac c\u00e2u h\u1ecfi l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng gi\u00fap h\u1ecdc sinh l\u1edbp 12 c\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c v\u00e0 n\u00e2ng cao k\u1ef9 n\u0103ng l\u00e0m b\u00e0i. \u0110\u1ec1 thi th\u1eed t\u1ed1t nghi\u1ec7p THPT 2027 m\u00f4n V\u1eadt l\u00ed l\u1ea7n 3 l\u00e0 t\u00e0i li\u1ec7u … \u0110\u1ecdc ti\u1ebfp<\/a><\/p>\n","protected":false},"author":1,"featured_media":790,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-785","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sgk-pdf"],"_links":{"self":[{"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/posts\/785","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/comments?post=785"}],"version-history":[{"count":2,"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/posts\/785\/revisions"}],"predecessor-version":[{"id":792,"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/posts\/785\/revisions\/792"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/media\/790"}],"wp:attachment":[{"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/media?parent=785"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/categories?post=785"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/giapsgk.com\/chuyen-de\/wp-json\/wp\/v2\/tags?post=785"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}