10/25/24 - Day 2 word problems

Which statement correctly compares and explains the difference in atomic size between two of the shaded elements?

Chitin is the material that forms the exoskeletons of arthropods like shrimp, crab, lobster, and insects. Chitin can be modified to produce a biomaterial called chitosan. Chitosan is water-soluble and has many applications in medical fi elds. The table describes characteristics of chitosan. Which medical problem can best be addressed by using chitosan?

You have two beakers whose mass is 50 g each. You pour 50 g of water in one beaker and 100 g of oil in the second beaker. Placing both beakers on the scale you measure 250 g. You pour the water into the beaker with the oil and place the empty beaker to the side. You measure the mass of the beaker of liquid. You measure approximately how many grams (g) on the scale?

You have a 300 g bar of KitKat that you chop into pieces to make KitKat bars. After chopping the bar into small pieces you put all of the KitKat on a scale. The scale measures how many grams (g) of KitKat total?

How many elements are in the following chemical equation?

How many atoms of Sulfur are in the chemical equation below?

Some students decided to do an experiment with a can of Dr. Pepper. They opened a 120 g can of Dr. Pepper and left it open for a day. They then measured the Dr. Pepper can the next day and found it was 112 g. They then poured some of the Dr. Pepper in a glass and observed that it was no longer fizzy. Why?

When 127 g of Chlorine reacts with 16 g of Sodium they form Salt, no Chlorine or Sodium is left over. How many grams of salt is produced?

You have 100 g of Mercuric Oxide. It can be broken down into 93 g of Mercury and 7 g of Oxygen. Is this chemical reaction following LOCOM?

If my starting mass in a closed system is 61.95 g, then what should my ending mass be?

Cu + S → CuS

5.5 g + 2.5 g → ? g

I have 400 g of dirt in a pot. I am planting a seed that has a mass of 1 g, and then I am pouring water in which has a mass of 49 g. How much will my mass be once it is all put together?

How are you feeling so far about the word problems you have done from yesterday and for today?