Adam found a block made of lead, the density of lead is 11.36 g/cm 3. the lengths of the blocks sides are 5 cm ,1.5 cm, and 3 cm,respectively.how heavy is adams block

The mass of the block made of lead = 255.6 grams

Explanation:

Step 1: Data given

Density of lead = 11.36 g/cm³

length of the block = 5 cm, 1.5 cm and 3 cm

Step 2: Calculate the volume of the block

Volume = length 1 * length 2 * length 3

Volume = 5cm * 1.5 cm * 3 cm

Volume = 22.5 cm³

Step 3: Calculate mass

Mass of the lead block = density of lead * volume

Mass of the lead block = 11.36 g/cm³ * 22.5cm³

Mass of the lead block = 255.6 grams

The mass of the block made of lead = 255.6 grams

The correct answer is - 27 grams.

Explanation:

salts contain atoms (ions) like Na+ and Cl, these atoms are electrically charged that leads to a big crystal as they can stick together. Those are too heavy to evaporate.

When you heat the hot plate water evaporates but the salt does not leave vessel so, the concentration of salt in the water increases. In the end, the concentration of salt gets so high and the salt will begin to recrystallize into a solid. When all of the water is gone, you will have salt left behind in the same concentration.

Thus, the correct answer is - 27 grams.