A container with a volume of 20 cubic decimeters and a mass of 4 kg is used to calculate the total mass when it is filled with water As the title

The water density is 1kg / L, so the weight of 20L water is 20kg, and the total mass is 24kg

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1. A cylindrical container with a volume of 3 cubic decimeters is placed on a horizontal table. The container contains 1 kg of water. Now, a container with a density of 0.6 g per cubic meter A cylindrical container with a volume of 3 cubic decimeters is placed on a horizontal table. The container contains 1 kg of water. Now put a wood block with a density of 0.6 g / cm3 into the container. The wood block does not touch the wall of the container. The water is just full but does not overflow. What is the mass of the wood block?
2. The volume of a conical container is 9.42 cubic decimeter, and the bottom radius is 1 decimeter
3. The volume of a 20 liter tank A. is equal to 20 cubic decimeters B. larger than 20 cubic decimeters C. smaller than 20 cubic decimeters
4. A drink bottle can hold up to 1.25 kg of water, then the volume of the bottle is () cubic decimeter
5. How many cubes can be placed in a box with a volume of 1 cubic meter
6. From the inside, the cuboid box with the edge length () has a volume of 1 cubic decimeter, which can hold（ Measured from the inside, the cube box with edge length () has a volume of 1 cubic decimeter, which can hold () water
7. How to prepare 75% ethanol? I don't know if 75% is volume fraction or mass fraction
8. Who knows how 75% alcohol becomes anhydrous ethanol? Why?
9. Now there is 98% ethanol, how to prepare 75% ethanol
10. How to make 75% ethanol from 95% ethanol
11. The volume of a container is 60 cubic decimeter, its volume () 60 cubic decimeter multiple choice questions a is equal to B is greater than C is less than
12. A cylindrical container can hold 2 cubic decimeters of water, we say its volume is 2 cubic decimeters, right and wrong
13. Which objects are to be found in one cubic centimeter, one cubic decimeter and one cubic meter The more, the better
14. Which objects are measured in cubic meters, decimeters, cubic centimeters
15. The volume of a refrigerator is 180 liters. Its volume must be 180 cubic decimeters. A is greater than B, less than C, and equal to D. it cannot be determined
16. The volume of the refrigerator is about 216 ()
17. The volume of refrigerator is about 200 cubic meters Is it meter, centimeter or meter
18. The volume of the refrigerator freezer is 60 liters (60 cubic decimeters). The length of the freezer is 40 cm, the width is 25 cm, and how high is it? (list the formula)
19. A cuboid freezer, measuring 90cm, 50cm wide and 50cm deep from inside. What is its volume cubic decimeter
20. What are the units of area and length in letters?