In order to measure 50g alcohol with density of 0.8g/cm3 at one time, Xiao Ming should choose the best one a.10ml,0.5ml b.50ml,1ml c.100ml,1ml d250ml,5ml Which is it?

In order to measure 50g alcohol with density of 0.8g/cm3 at one time, Xiao Ming should choose the best one a.10ml,0.5ml b.50ml,1ml c.100ml,1ml d250ml,5ml Which is it?

Choose C
V = m divided by P
V = 62.5cm3
5 ml
So choose C

1. Just give you a measuring cylinder. If you want to measure 56g of alcohol, please calculate your method. (the density of alcohol is 0.8g/cm & # 179;)
2. Just give you a balance. If you want to measure 50ml of alcohol, please work out your method (the density of alcohol is 0.8g/cm & # 179;)

1. Alcohol density: ρ = 0.8g/cm3
The volume of 56g alcohol is as follows:
v＝m/ρ＝56/0.8=70cm3
That is 70 cm3
2. The quality of 50 ml alcohol is as follows:
m＝ρv＝50×0.8＝40g
Measure the mass m of the empty cup with a balance, then pour in alcohol to make the total mass 40 + M
The second question is that you can't do without a container

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