The correct value according to Ruler A is 2.2cm, whereas the correct value according to Ruler B is 2.27 cm. Perform the mathematical operations indicated by the title of each bin using these two values. Round the correct answers to the appropriate number of significant figures or decimal places. Compare the rounded correct answers with the values given and drag the rounded correct answers to the bin that represents the mathematical operation performed. There are also answers that are not rounded to the correct number of significant figures or decimal places. Drag these answers to the bin named �Incorrect rounding.�For example, multiply the number 2.2 by 2.27. Round the answer to the appropriate number of significant figures. Drag the correctly rounded answer to the bin labeled "2.2 x 2.27"Drag the incorrect answers from the multiplication operation to the bin named "Incorrect rounding."Drag the appropriate items to their respective bins. Item: 5.0 cm^2, 4.994 cm^2, 4.5cm, 0.0cm, 4.47cm, 0.07cm, 0.1cm, 1.0, 1, 1, 10.3, 4.99cm^21. 2.27x2.2 =?2. 2.27/2.2 =?3. 2.27 +2.2 = ?4. 2.27-2.2 = ?5. Incorrect rounding?

1) 5.0 cm² ( to two significant figures or one decimal place)

2) 1.0 (to two significant figures or to one decimal place)

3) 4.5 cm ( to  two significant figures or one decimal place)

4) 0.1 cm ( to  two significant figures or one decimal place)

5) The remaining answers due to incorrect rounding are 4.994 cm², 0.0 cm, 4.47 cm, 0.07 cm, 1, 1.03 cm, 4.99 cm²

Explanation:

The answers given are rounded to  two significant figures or one decimal places:

1) 2.27*2.2 =  5.0 cm² ( to one decimal place)

2) 2.27/2.2=  1.0 ( to one decimal place)

3)  2.27+2.2  = 4.5 cm ( to one decimal place)

4) 2.27-2.2  =  0.1 cm ( to one decimal place)

5) The remaining answers due to incorrect rounding are 4.994 cm², 0.0 cm, 4.47 cm, 0.07 cm, 1, 1.03 cm, 4.99 cm²

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.