![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
If the hollow part of a 5-hollow copper ball with a volume of 30cm and a mass of 178g is filled with aluminum, what is the mass of aluminum?
V copper = m copper / ρ copper = 178g / 8.9g/cm & # 179; = 20cm & # 179;
V aluminum = V total - V copper = 30cm & # 179; - 20cm & # 179; = 10cm & # 179;
M al = ρ al V al = 2.7g/cm & # 179; × 10cm & # 179; = 27g
A: the mass of aluminum is 27g
Ask again if you have any questions
A hollow copper ball with a volume of 20 cubic centimeters and a mass of 89 grams. If the hollow part is filled with lead, the total mass of the ball will be reduced
Solution;
Find the volume of copper in this material
Volume = mass / density
V＝89g/8.9g/cm3=10cm3
Finding the volume of lead
v＝20cm3-10cm3=10cm3
Seeking the quality of lead
m=pv=11.3g/cm3*10cm3=113g
Total mass = 89g + 113g = 202g
A
The volume of the hollow copper ball is 30 cubic centimeters, and its mass is 89 grams. When the hollow part is filled with water, its total mass is 89 grams
V copper = m copper / P copper = 89g / 8.9g/cm ^ 3 = 10cm ^ 3
V water = V-V copper = 30cm ^ 3-10cm ^ 3 = 20cm ^ 3
Then: m water = V water * P water = 20cm ^ 3 * 1g / cm ^ 3 = 20g;
The total mass m = m copper + m water = 109G;
This answer is not rigorous enough. The air quality in the hollow copper ball is not included. However, the answer should be 109G, and the air should not be considered
RELATED INFORMATIONS
- 1. There is a hollow copper ball with a volume of 30 cubic centimeters and a mass of 178 kg. If the hollow copper ball is filled with aluminum, what is the mass of aluminum? Density of aluminum: 2.7 x 10 cubic kg / M & # 179; The density of copper is 8.9 x 10 cubic kg / M and 179;
- 2. What ratio of gold to silver can make the alloy density 11.0g/cm & amp; amp; amp; sup3;
- 3. Is the density kg / M & amp; amp; amp; sup3; a Si derived unit
- 4. When 1000ml salt water is collected, the weight is 1.05kg, and the known density of salt is 2.7g/cm ^ 3
- 5. How to measure the density of brine
- 6. At present, concentrated H2SO4 with a mass fraction of 98% and a density of 1.84 g / cm3 is diluted to 500 ml dilute sulfuric acid with a mass concentration of 9.2 mol / L (1) How many ml of 98% concentrated sulfuric acid do you need? (2) If 100ml is taken out of 500ml, what is the concentration of the substance in the solution? What is the concentration of H + substance? If 100ml dilute sulfuric acid is taken out and reacted with enough zinc particles, how much hydrogen can be produced under standard conditions?
- 7. A factory uses 98% concentrated sulfuric acid (density is 1.84 g / cm3) to prepare 30% dilute sulfuric acid for production. The volume ratio of concentrated sulfuric acid to water is the closest to () A. 1：3B. 1：4C. 1：5D. 1：6
- 8. To prepare 200 grams of 20% dilute sulfuric acid with 98% concentrated sulfuric acid (density 1.84 g / cm3), how many ml of concentrated sulfuric acid and water are needed Company
- 9. Dilute concentrated sulfuric acid with 18.4 mol / L concentration and 18.4 g / cm * 3 density to 1 000 ml, 2 mol / L concentration and 1.2 g / cm * 3 density Dilute 18.4 mol / L concentrated sulfuric acid with density of 18.4 g / cm * 3 to 1000 ml, 2 mol / L concentrated sulfuric acid with density of 1.2 g / cm ^ 3. Calculate: 1. Volume of concentrated sulfuric acid required; 2. Volume of water required
- 10. Dilute 98% (density 1.84 g / cm3) concentrated sulfuric acid to 4 mol / L dilute sulfuric acid 250 ml, how many ml of concentrated sulfuric acid are taken
- 11. A hollow copper ball with a mass of 178g and a volume of 30cm3, (1) The ratio of the volume of the hollow part to the volume of the solid part of the copper ball was calculated. (2) Xiao Hua filled the hollow part of the copper ball with some liquid, and the total mass was 314g
- 12. There is a hollow copper ball with a mass of 178g and a volume of 30cm3. If the hollow part is filled with water, what is the mass of the whole copper ball? (the known density of copper is 8.9 × 103kg / m3)
- 13. A hollow copper ball has a mass of 178g and a volume of 50 cubic centimeters. What is the volume of the hollow part of the ball, The format is easy to understand
- 14. Cut a cube block of 1 cubic meter into small cube blocks of 1 cubic decimeter with a knife. If these small blocks are arranged in a row, they are () long in total?
- 15. Cut 1 cubic meter cube block into 1 cubic decimeter cube block. If these blocks are arranged in a row, they are () long A. 1km B. 100m C. 100m D. 1000M
- 16. 1. How many cubes of 1 cubic meter can be cut? If the cubes are arranged in a row, how long is it 2. On the map with a scale of 1:4000000, it is measured that the distance between a and B is 28cm. A train runs 280km at 4 hours. According to this calculation, the train leaves from a at 10:20 a.m. and arrives at B at what time in the morning the next day? 3. Uncle Wang parked his car in the parking lot at 11:30 a.m. and paid 14.50 yuan. The fee for receiving manuscripts: 9.50 yuan for one hour, and 2.50 yuan for every 0.5 hour for more than one hour. When will Uncle Wang drive away
- 17. Use a small cube with a volume of 1 cubic decimeter to pile up a large cube with a volume of 1 cubic meter. You need () if you put these small cubes next to each other Using a small cube with a volume of 1 cubic decimeter to pile up a large cube with a volume of 1 cubic meter, we need (). If these small cubes are arranged in a row next to each other, how long is it () meters?
- 18. The volume sum of a and B cubes is 56 cubic decimeters. The length of a side is one third of that of B side The volume of cube is () cubic decimeter and () cubic decimeter respectively.
- 19. A cone, the bottom area is 12.56 square decimeters, the volume is 31.4 cubic decimeters, its height should be______ ．
- 20. A cone has a volume of 16 cubic decimeters, a bottom area of 4 square decimeters and a height of () decimeters Please