It says that Joan need to weigh 555 grams of Sodium Chloride. But the scale in her lab will only weigh kilograms. So she needs to know how much in kilograms is 555 g.
We have the relation between kilograms and grams. i.e.,
1 kg = 1000 g
So, 1 g = 1/1000 kg
⇒ 555 g = 555/1000 kg = 0.555 kg
Hence Joan should weigh out 0.555kg of Sodium Chloride.
Answer:Mary prepares a salad at the same time the chicken is cooking in the oven. This statement is an example of HEALTHY MEAL PLANNING. John created a list of tasks to cook broccoli soup. This list also included estimated time it may take to complete each of the tasks. This statement is an example of WORK PLAN.