Question

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stoichiometry - free - virtual - chemistry - lab - activity - stud... for bread and cheese, and choose your own symbol to represent meat. write a chemical equation to represent the recipe in image 3. image 3: recipe for a sandwich that is made with bread, meat, and cheese. symbols: bread = b cheese = c meat = equation: 2. a different sandwich recipe creates a bread, meat and cheese sandwich with the formula b₂m₂c. write the balanced chemical equation that shows the correctly proportioned ingredients to make this sandwich. 3. a restaurant makes sandwiches according to the recipe in image 3. due to a busy lunch rush, they ran out of bread. an employee went out and bought 2 loaves of bread so that they could continue making sandwiches. each loaf of bread had 21 slices, and the restaurant used the 2 loaves of bread to sell 15 more sandwiches. how many slices of bread were left? explain your answer in detail.

Explanation:

Step1: Define meat symbol

Let's choose 'M' as the symbol for meat.

Step2: Write chemical - equation for image 3

Based on the image, 2 slices of bread (B), 1 slice of cheese (C) and 1 piece of meat (M) make 1 sandwich. So the equation is $2B + C+M
ightarrow1$ sandwich.

Step3: Write balanced equation for $B_2M_1C$

The formula $B_2M_1C$ means 2 bread, 1 meat and 1 cheese make 1 sandwich. The balanced chemical equation is $2B + C+M
ightarrow1$ sandwich.

Step4: Calculate total bread slices

Each loaf has 21 slices and there are 2 loaves, so the total number of bread - slices is $21\times2=42$ slices.

Step5: Calculate used bread slices

To make 15 sandwiches, and since each sandwich needs 2 slices of bread according to the recipe in image 3, the number of used bread slices is $15\times2 = 30$ slices.

Step6: Calculate remaining bread slices

Subtract the used slices from the total slices. $42−30 = 12$ slices.

Answer:

1. Equation: $2B + C+M

ightarrow1$ sandwich

1. Equation: $2B + C+M

ightarrow1$ sandwich

1. There are 12 slices of bread left. Each loaf has 21 slices, so 2 loaves have $21\times2 = 42$ slices. Since each sandwich needs 2 slices of bread and 15 sandwiches were made, $15\times2=30$ slices were used. Then $42 - 30=12$ slices remain.