1. Calculate the density of cubical solid if one of its side is 2 cm and...

   

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1. Calculate the density of cubical solid if one of its side is 2 cm and its mass is 154.4 g. What material it the cube made of? 2. Air has density of 1.29 kg/m³ at room temperature. Calculate the mass of air in a room with length, width and height of 3 m, 1.5 m and 2 m, respectively. 3. What volume does 0.4 kg of alcohol occupy? What is the weight of this volume? 4. What volume of water has the same mass of 100 cm³ of lead? 1. Calculate the density of cubical solid if one of its side is 2 cm and its mass is 154.4 g. What material it the cube made of? 2. Air has density of 1.29 kg/m³ at room temperature. Calculate the mass of air in a room with length, width and height of 3 m, 1.5 m and 2 m, respectively. 3. What volume does 0.4 kg of alcohol occupy? What is the weight of this volume? 4. What volume of water has the same mass of 100 cm³ of lead?