The content of vitamin C in orange juice was determined. 20 g orange juice was reacted with iodine solution containing 1% iodine, and 25.4 g iodine was consumed to calculate the mass fraction of vitamin C You're wrong. It's 0.176g

The content of vitamin C in orange juice was determined. 20 g orange juice was reacted with iodine solution containing 1% iodine, and 25.4 g iodine was consumed to calculate the mass fraction of vitamin C You're wrong. It's 0.176g

C6H8O6+I2=C6H6O6+2HI
176 254
x 25.4*1%
176/254=x/25.4*1%
x=1.76g
p%=1.76g/20g*100%=8.8%

Fresh orange juice and fresh apple juice

Just use fresh orange / apple juice
It's strange to add the word squeezed

Apple juice, orange juice and Sydney juice, which one has more average moisture? Why?

According to the operation experience, Sydney juice is the most, orange juice is the second, apple juice is the least

Coke is three fourths less in volume than orange juice
Ask the volume of coke is how many liters? Note: orange juice 2L how many liters of coke

2×（1-3/4）
=2×1/4
=1 / 2 (L)
A: coke has 1 / 2 liter