| 1. |
info: 2025-04-26 02:21:57.682 RelationalEventId.CommandExecuted[20101] (Microsoft.EntityFrameworkCore.Database.Command)
20ms [Parameters=[@p7='d4d9e3fa-ac59-4ce0-a42a-bc7ff64786c9', @p0='True', @p1='False', @p2='5', @p3='dfcf94a4-bac2-4d77-b774-61cade146335', @p4='73.jpg' (Size = 100), @p5='https://knowledgenest.blob.core.windows.net/scanners/0/[Chemija][Horizontai Chemija 8 klasė][Vadovėlis 2 dalis]/pages/73.jpg' (Size = 1000), @p6='## Kaip išlyginti cheminių reakcijų lygtis?
**AIŠKINAMĖS**
Kad visų cheminių elementų dalelių skaičius prieš cheminę reakciją ir po jos būtų vienodas, cheminės reakcijos lygtyje rašomi reikiami koeficientai, tai yra išlyginama cheminės reakcijos lygtis. Norint išlyginti cheminės reakcijos lygtį, pirmiausia reikia suskaičiuoti, kiek kiekvieno cheminio elemento dalelių (atomų ar jonų) sudaro reagentus ir reakcijos produktus.
Panagrinėkime, kaip išlyginti šią cheminės reakcijos lygtį:
Li + O₂ → Li₂O.
Cheminės reakcijos lygties kairėje pusėje (rašomi reagentai) yra 1 ličio Li ir 2 deguonies O atomai. O dešinėje pusėje (rašomi reakcijos produktai) yra 2 ličio jonai Li⁺ ir 1 oksido jonas O²⁻. Vadinasi, cheminių elementų dalelių skaičius nesutampa – cheminės reakcijos lygties kairėje pusėje trūksta 1 ličio atomo, o dešinėje – 1 oksido jono. Koeficientai rašomi prieš tų cheminių medžiagų formules, kuriose nurodytų cheminių elementų dalelių skaičių norima padidinti.
Cheminės reakcijos lygtį gali būti sunku išlyginti, kai cheminis elementas įeina į kelių cheminių medžiagų sudėtį. Tuomet labai svarbu koeficientus rašyti iš eilės ir kaskart pakeitus koeficientą suskaičiuoti, kiek yra cheminių elementų dalelių abiejose lygties pusėse. Jei cheminėje reakcijoje dalyvauja arba jai vykstant susidaro vieninė medžiaga, prieš šios medžiagos formulę koeficientą geriausia rašyti paskiausiai, nes, jį įrašius, kitų cheminių elementų dalelių skaičius nekinta. Panagrinėkime, kaip galima išlyginti šią cheminės reakcijos lygtį:
C₃H₈ + O₂ → CO₂ + H₂O.
Pirmiausia reikia suskaičiuoti, kiek cheminių elementų atomų yra cheminės reakcijos lygties kairėje pusėje, o kiek – dešinėje. Jų skaičių galima nurodyti lentelėje po cheminės reakcijos lygtimi.
```
C₃H₈ + O₂ → CO₂ + H₂O
Elementas | Kairė pusė | Dešinė pusė
----------|-----------|------------
C | 3 | 1
H | 8 | 2
O | 2 | 3
```' (Size = 4000)], CommandType='Text', CommandTimeout='30']
SET IMPLICIT_TRANSACTIONS OFF;
SET NOCOUNT ON;
UPDATE [ScannerPages] SET [Active] = @p0, [Deleted] = @p1, [Position] = @p2, [ScannerId] = @p3, [StorageMediaName] = @p4, [StorageMediaUrl] = @p5, [Text] = @p6
OUTPUT 1
WHERE [Id] = @p7;
|
| 2. |
info: 2025-04-26 02:21:57.982 RelationalEventId.CommandExecuted[20101] (Microsoft.EntityFrameworkCore.Database.Command)
28ms [Parameters=[@__id_0='fde496a0-e8d6-5fc3-ab29-0b0267c82172', @__site_Id_1='63d6eb4e-8e39-4ac6-8f69-55ee76feccce'], CommandType='Text', CommandTimeout='30']
SELECT [c].[Id], [c].[Active], [c].[Deleted], [c].[Description], [c].[DescriptionBackup], [c].[Left], [c].[ParentId], [c].[Position], [c].[ProcessorGenerateImagePrompt], [c].[Right], [c].[SiteId], [c].[StorageMediaName], [c].[StorageMediaUrl], [c].[Title], [c].[TitleBackup], [c].[TitleSlug], [c].[TotalChildren], [c].[TotalScanners], [c].[TotalYoutubeVideos]
FROM [Categories] AS [c] WITH (NOLOCK)
WHERE [c].[Id] = @__id_0 AND [c].[SiteId] = @__site_Id_1 AND [c].[Active] = CAST(1 AS bit) AND [c].[Deleted] = CAST(0 AS bit)
ORDER BY [c].[Id]
|
| 3. |
info: 2025-04-26 02:21:57.992 RelationalEventId.CommandExecuted[20101] (Microsoft.EntityFrameworkCore.Database.Command)
10ms [Parameters=[@__id_0='fde496a0-e8d6-5fc3-ab29-0b0267c82172', @__site_Id_1='63d6eb4e-8e39-4ac6-8f69-55ee76feccce'], CommandType='Text', CommandTimeout='30']
SELECT [c4].[Id], [c4].[Active], [c4].[Deleted], [c4].[Description], [c4].[DescriptionBackup], [c4].[Left], [c4].[ParentId], [c4].[Position], [c4].[ProcessorGenerateImagePrompt], [c4].[Right], [c4].[SiteId], [c4].[StorageMediaName], [c4].[StorageMediaUrl], [c4].[Title], [c4].[TitleBackup], [c4].[TitleSlug], [c4].[TotalChildren], [c4].[TotalScanners], [c4].[TotalYoutubeVideos], [c].[Id]
FROM [Categories] AS [c] WITH (NOLOCK)
INNER JOIN (
SELECT [c0].[Id], [c0].[Active], [c0].[Deleted], [c0].[Description], [c0].[DescriptionBackup], [c0].[Left], [c0].[ParentId], [c0].[Position], [c0].[ProcessorGenerateImagePrompt], [c0].[Right], [c0].[SiteId], [c0].[StorageMediaName], [c0].[StorageMediaUrl], [c0].[Title], [c0].[TitleBackup], [c0].[TitleSlug], [c0].[TotalChildren], [c0].[TotalScanners], [c0].[TotalYoutubeVideos]
FROM [Categories] AS [c0] WITH (NOLOCK)
WHERE [c0].[Active] = CAST(1 AS bit) AND [c0].[Deleted] = CAST(0 AS bit)
) AS [c4] ON [c].[Id] = [c4].[ParentId]
WHERE [c].[Id] = @__id_0 AND [c].[SiteId] = @__site_Id_1 AND [c].[Active] = CAST(1 AS bit) AND [c].[Deleted] = CAST(0 AS bit)
ORDER BY [c].[Id], [c4].[Position], [c4].[Id]
|
| 4. |
info: 2025-04-26 02:21:57.994 RelationalEventId.CommandExecuted[20101] (Microsoft.EntityFrameworkCore.Database.Command)
2ms [Parameters=[@__id_0='fde496a0-e8d6-5fc3-ab29-0b0267c82172', @__site_Id_1='63d6eb4e-8e39-4ac6-8f69-55ee76feccce'], CommandType='Text', CommandTimeout='30']
SELECT [c5].[Id], [c5].[Active], [c5].[Deleted], [c5].[Description], [c5].[DescriptionBackup], [c5].[Left], [c5].[ParentId], [c5].[Position], [c5].[ProcessorGenerateImagePrompt], [c5].[Right], [c5].[SiteId], [c5].[StorageMediaName], [c5].[StorageMediaUrl], [c5].[Title], [c5].[TitleBackup], [c5].[TitleSlug], [c5].[TotalChildren], [c5].[TotalScanners], [c5].[TotalYoutubeVideos], [c].[Id], [c4].[Id]
FROM [Categories] AS [c] WITH (NOLOCK)
INNER JOIN (
SELECT [c0].[Id], [c0].[ParentId], [c0].[Position]
FROM [Categories] AS [c0] WITH (NOLOCK)
WHERE [c0].[Active] = CAST(1 AS bit) AND [c0].[Deleted] = CAST(0 AS bit)
) AS [c4] ON [c].[Id] = [c4].[ParentId]
INNER JOIN (
SELECT [c1].[Id], [c1].[Active], [c1].[Deleted], [c1].[Description], [c1].[DescriptionBackup], [c1].[Left], [c1].[ParentId], [c1].[Position], [c1].[ProcessorGenerateImagePrompt], [c1].[Right], [c1].[SiteId], [c1].[StorageMediaName], [c1].[StorageMediaUrl], [c1].[Title], [c1].[TitleBackup], [c1].[TitleSlug], [c1].[TotalChildren], [c1].[TotalScanners], [c1].[TotalYoutubeVideos]
FROM [Categories] AS [c1] WITH (NOLOCK)
WHERE [c1].[Active] = CAST(1 AS bit) AND [c1].[Deleted] = CAST(0 AS bit)
) AS [c5] ON [c4].[Id] = [c5].[ParentId]
WHERE [c].[Id] = @__id_0 AND [c].[SiteId] = @__site_Id_1 AND [c].[Active] = CAST(1 AS bit) AND [c].[Deleted] = CAST(0 AS bit)
ORDER BY [c].[Id], [c4].[Position], [c4].[Id], [c5].[Position]
|
| 5. |
info: 2025-04-26 02:21:58.012 RelationalEventId.CommandExecuted[20101] (Microsoft.EntityFrameworkCore.Database.Command)
2ms [Parameters=[@__id_0='fde496a0-e8d6-5fc3-ab29-0b0267c82172', @__site_Id_1='63d6eb4e-8e39-4ac6-8f69-55ee76feccce'], CommandType='Text', CommandTimeout='30']
SELECT [s3].[ScannerId], [s3].[CategoryId], [s3].[Id], [s3].[Active], [s3].[CheatSheet], [s3].[CheatSheet2], [s3].[Deleted], [s3].[FactErrors], [s3].[FactErrorsExplanation], [s3].[ParentCategory2Id], [s3].[ParentCategoryId], [s3].[ProcessorGenerateImagePrompt], [s3].[Prompt], [s3].[Reference], [s3].[ReferenceSlug], [s3].[SiteId], [s3].[SpellingErrors], [s3].[SpellingErrorsExplanation], [s3].[Summary], [s3].[Title], [s3].[TitleBackup], [s3].[TitleSlug], [s3].[TotalCards], [s3].[TotalCards2], [s3].[TotalCategories], [s3].[TotalPages], [s3].[Verified], [c].[Id], [c4].[Id]
FROM [Categories] AS [c] WITH (NOLOCK)
INNER JOIN (
SELECT [c0].[Id], [c0].[ParentId], [c0].[Position]
FROM [Categories] AS [c0] WITH (NOLOCK)
WHERE [c0].[Active] = CAST(1 AS bit) AND [c0].[Deleted] = CAST(0 AS bit)
) AS [c4] ON [c].[Id] = [c4].[ParentId]
INNER JOIN (
SELECT [c2].[ScannerId], [c2].[CategoryId], [s].[Id], [s].[Active], [s].[CheatSheet], [s].[CheatSheet2], [s].[Deleted], [s].[FactErrors], [s].[FactErrorsExplanation], [s].[ParentCategory2Id], [s].[ParentCategoryId], [s].[ProcessorGenerateImagePrompt], [s].[Prompt], [s].[Reference], [s].[ReferenceSlug], [s].[SiteId], [s].[SpellingErrors], [s].[SpellingErrorsExplanation], [s].[Summary], [s].[Title], [s].[TitleBackup], [s].[TitleSlug], [s].[TotalCards], [s].[TotalCards2], [s].[TotalCategories], [s].[TotalPages], [s].[Verified]
FROM [CategoryScanners] AS [c2]
INNER JOIN [Scanners] AS [s] ON [c2].[ScannerId] = [s].[Id]
WHERE [s].[Active] = CAST(1 AS bit) AND [s].[Deleted] = CAST(0 AS bit)
) AS [s3] ON [c4].[Id] = [s3].[CategoryId]
WHERE [c].[Id] = @__id_0 AND [c].[SiteId] = @__site_Id_1 AND [c].[Active] = CAST(1 AS bit) AND [c].[Deleted] = CAST(0 AS bit)
ORDER BY [c].[Id], [c4].[Position], [c4].[Id], [s3].[Id], [s3].[ScannerId], [s3].[CategoryId]
|
| 6. |
info: 2025-04-26 02:21:58.060 RelationalEventId.CommandExecuted[20101] (Microsoft.EntityFrameworkCore.Database.Command)
7ms [Parameters=[@__id_0='fde496a0-e8d6-5fc3-ab29-0b0267c82172', @__site_Id_1='63d6eb4e-8e39-4ac6-8f69-55ee76feccce'], CommandType='Text', CommandTimeout='30']
SELECT [s4].[Id], [s4].[Active], [s4].[Context], [s4].[ContextBackup], [s4].[ContextStorageMediaName], [s4].[ContextStorageMediaUrl], [s4].[Deleted], [s4].[FactErrors], [s4].[FactErrorsExplanation], [s4].[Facts], [s4].[FactsBackup], [s4].[FactsStorageMediaName], [s4].[FactsStorageMediaUrl], [s4].[Position], [s4].[ProcessorGenerateImagePrompt], [s4].[Prompt], [s4].[ScannerId], [s4].[SpellingErrors], [s4].[SpellingErrorsExplanation], [s4].[StorageMediaName], [s4].[StorageMediaUrl], [s4].[Summary], [s4].[SummaryBackup], [s4].[SummaryStorageMediaName], [s4].[SummaryStorageMediaUrl], [s4].[Title], [s4].[TitleSlug], [s4].[TotalFillTheBlankSelectionQuestions], [s4].[TotalMultipleSelectionQuestions], [s4].[TotalOrderingQuestions], [s4].[TotalQuestionPoints], [s4].[TotalQuestions], [s4].[TotalShortAnswerQuestions], [s4].[TotalSingleSelectionQuestions], [s4].[TotalSources], [s4].[TotalTrueFalseQuestions], [s4].[Verified], [s4].[Version], [c].[Id], [c4].[Id], [s3].[ScannerId], [s3].[CategoryId], [s3].[Id]
FROM [Categories] AS [c] WITH (NOLOCK)
INNER JOIN (
SELECT [c0].[Id], [c0].[ParentId], [c0].[Position]
FROM [Categories] AS [c0] WITH (NOLOCK)
WHERE [c0].[Active] = CAST(1 AS bit) AND [c0].[Deleted] = CAST(0 AS bit)
) AS [c4] ON [c].[Id] = [c4].[ParentId]
INNER JOIN (
SELECT [c2].[ScannerId], [c2].[CategoryId], [s].[Id]
FROM [CategoryScanners] AS [c2]
INNER JOIN [Scanners] AS [s] ON [c2].[ScannerId] = [s].[Id]
WHERE [s].[Active] = CAST(1 AS bit) AND [s].[Deleted] = CAST(0 AS bit)
) AS [s3] ON [c4].[Id] = [s3].[CategoryId]
INNER JOIN (
SELECT [s0].[Id], [s0].[Active], [s0].[Context], [s0].[ContextBackup], [s0].[ContextStorageMediaName], [s0].[ContextStorageMediaUrl], [s0].[Deleted], [s0].[FactErrors], [s0].[FactErrorsExplanation], [s0].[Facts], [s0].[FactsBackup], [s0].[FactsStorageMediaName], [s0].[FactsStorageMediaUrl], [s0].[Position], [s0].[ProcessorGenerateImagePrompt], [s0].[Prompt], [s0].[ScannerId], [s0].[SpellingErrors], [s0].[SpellingErrorsExplanation], [s0].[StorageMediaName], [s0].[StorageMediaUrl], [s0].[Summary], [s0].[SummaryBackup], [s0].[SummaryStorageMediaName], [s0].[SummaryStorageMediaUrl], [s0].[Title], [s0].[TitleSlug], [s0].[TotalFillTheBlankSelectionQuestions], [s0].[TotalMultipleSelectionQuestions], [s0].[TotalOrderingQuestions], [s0].[TotalQuestionPoints], [s0].[TotalQuestions], [s0].[TotalShortAnswerQuestions], [s0].[TotalSingleSelectionQuestions], [s0].[TotalSources], [s0].[TotalTrueFalseQuestions], [s0].[Verified], [s0].[Version]
FROM [ScannerCards] AS [s0]
WHERE [s0].[Active] = CAST(1 AS bit) AND [s0].[Deleted] = CAST(0 AS bit)
) AS [s4] ON [s3].[Id] = [s4].[ScannerId]
WHERE [c].[Id] = @__id_0 AND [c].[SiteId] = @__site_Id_1 AND [c].[Active] = CAST(1 AS bit) AND [c].[Deleted] = CAST(0 AS bit)
ORDER BY [c].[Id], [c4].[Position], [c4].[Id], [s3].[Id], [s3].[ScannerId], [s3].[CategoryId], [s4].[TitleSlug]
|
| 7. |
info: 2025-04-26 02:21:58.082 RelationalEventId.CommandExecuted[20101] (Microsoft.EntityFrameworkCore.Database.Command)
10ms [Parameters=[@__id_0='fde496a0-e8d6-5fc3-ab29-0b0267c82172', @__site_Id_1='63d6eb4e-8e39-4ac6-8f69-55ee76feccce'], CommandType='Text', CommandTimeout='30']
SELECT [s5].[ScannerId], [s5].[CategoryId], [s5].[Id], [s5].[Active], [s5].[CheatSheet], [s5].[CheatSheet2], [s5].[Deleted], [s5].[FactErrors], [s5].[FactErrorsExplanation], [s5].[ParentCategory2Id], [s5].[ParentCategoryId], [s5].[ProcessorGenerateImagePrompt], [s5].[Prompt], [s5].[Reference], [s5].[ReferenceSlug], [s5].[SiteId], [s5].[SpellingErrors], [s5].[SpellingErrorsExplanation], [s5].[Summary], [s5].[Title], [s5].[TitleBackup], [s5].[TitleSlug], [s5].[TotalCards], [s5].[TotalCards2], [s5].[TotalCategories], [s5].[TotalPages], [s5].[Verified], [c].[Id]
FROM [Categories] AS [c] WITH (NOLOCK)
INNER JOIN (
SELECT [c3].[ScannerId], [c3].[CategoryId], [s1].[Id], [s1].[Active], [s1].[CheatSheet], [s1].[CheatSheet2], [s1].[Deleted], [s1].[FactErrors], [s1].[FactErrorsExplanation], [s1].[ParentCategory2Id], [s1].[ParentCategoryId], [s1].[ProcessorGenerateImagePrompt], [s1].[Prompt], [s1].[Reference], [s1].[ReferenceSlug], [s1].[SiteId], [s1].[SpellingErrors], [s1].[SpellingErrorsExplanation], [s1].[Summary], [s1].[Title], [s1].[TitleBackup], [s1].[TitleSlug], [s1].[TotalCards], [s1].[TotalCards2], [s1].[TotalCategories], [s1].[TotalPages], [s1].[Verified]
FROM [CategoryScanners] AS [c3]
INNER JOIN [Scanners] AS [s1] ON [c3].[ScannerId] = [s1].[Id]
WHERE [s1].[Active] = CAST(1 AS bit) AND [s1].[Deleted] = CAST(0 AS bit)
) AS [s5] ON [c].[Id] = [s5].[CategoryId]
WHERE [c].[Id] = @__id_0 AND [c].[SiteId] = @__site_Id_1 AND [c].[Active] = CAST(1 AS bit) AND [c].[Deleted] = CAST(0 AS bit)
ORDER BY [c].[Id], [s5].[Id], [s5].[ScannerId], [s5].[CategoryId]
|
| 8. |
info: 2025-04-26 02:21:58.264 RelationalEventId.CommandExecuted[20101] (Microsoft.EntityFrameworkCore.Database.Command)
8ms [Parameters=[@__site_Id_0='63d6eb4e-8e39-4ac6-8f69-55ee76feccce', @__item_Left_1='8067', @__item_Right_2='8080'], CommandType='Text', CommandTimeout='30']
SELECT [c].[Id], [c].[Active], [c].[Deleted], [c].[Description], [c].[DescriptionBackup], [c].[Left], [c].[ParentId], [c].[Position], [c].[ProcessorGenerateImagePrompt], [c].[Right], [c].[SiteId], [c].[StorageMediaName], [c].[StorageMediaUrl], [c].[Title], [c].[TitleBackup], [c].[TitleSlug], [c].[TotalChildren], [c].[TotalScanners], [c].[TotalYoutubeVideos]
FROM [Categories] AS [c] WITH (NOLOCK)
WHERE [c].[SiteId] = @__site_Id_0 AND [c].[Left] <= @__item_Left_1 AND [c].[Right] >= @__item_Right_2 AND [c].[Deleted] = CAST(0 AS bit)
ORDER BY [c].[Left]
|
| 87 ms |
