Domanda del libro di testo
Use the following graph for problems 1.23 and 1.24:
How many minutes were needed to reach a temperature of 45 °C?
1742
views
Ch.1 Chemistry in Our Lives
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch.1 Chemistry in Our Lives19
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy53
- Ch.4 Atoms and Elements58
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions38
- Ch.8 Gases30
- Ch.9 Solutions50
- Ch.10 Acids and Bases and Equilibrium64
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons77
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones82
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides91
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis86
- Ch.18 Metabolic Pathways and ATP Production73
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Non è quello che usi tu?Cambia libro di testo
Capitolo 1, Problema 17c
Evaluate each of the following:
c. 4 × (–2) + 6 = __________
Guida verificata passo dopo passo1
Step 1: Begin by identifying the mathematical operations in the expression. The given expression is 4 × (-2) + 6. It involves multiplication and addition.
Step 2: Perform the multiplication first, as per the order of operations (PEMDAS/BODMAS). Multiply 4 by -2. This will give a product of -8.
Step 3: After completing the multiplication, rewrite the expression with the result of the multiplication substituted in. The expression now becomes -8 + 6.
Step 4: Perform the addition operation. Add -8 and 6 together. Remember that adding a negative number is equivalent to subtracting its absolute value.
Step 5: The result of the addition will give the final value of the expression. Ensure you understand how to combine positive and negative numbers correctly.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
1mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Multiplication
Multiplication is a fundamental arithmetic operation that represents the repeated addition of a number. In the expression 4 x (-2), it indicates that -2 is added to itself four times, resulting in a negative product. Understanding multiplication is essential for evaluating expressions that involve both positive and negative numbers.
Video consigliato:
Percorso guidato
02:26
Multiple Bonds Concept 1
Addition
Addition is another basic arithmetic operation that combines two or more numbers to produce a sum. In the expression 6 + (result of multiplication), it is crucial to correctly add the result of the multiplication to 6. This operation is foundational in arithmetic and is often used in conjunction with multiplication in algebraic expressions.
Video consigliato:
Percorso guidato
2:55Addition Reactions Concept 1
Order of Operations
The order of operations is a set of rules that dictates the sequence in which different mathematical operations should be performed to ensure consistent results. Commonly remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction), it is vital to follow this order when evaluating expressions like 4 x (-2) + 6 to arrive at the correct answer.
Video consigliato:
Percorso guidato
01:55Addition and Subtraction Operations