How many water molecules are contained in 500ml mineral water? (the known density of water is 1g / ml, other substances are ignored)

The water density is 1g / ml, 500ml mineral water is about 500g, the mass of substance is 27.78mol, the molecular number is 27.78 * 6.02 × 10 ^ 23 = 1.67 × 10 ^ 25

There are 23 water molecules to the power of 3.34 × 10 in 10 grams of water. How many water molecules do you estimate in 500 ml of water you drink in one day?

3.34x10 to the 23th power X500 △ 10
=The 23rd power of 167x10
=67x10 to the 25th power
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150 ml is a quarter more than ()?

120 ml

A ball into the water is 150 ml, take out is 120 ml, ask the volume of the ball is?

150-120 = 30 ml

One third of a number is 40%, less than 21. Find the quotient of 3 / 5 * 7 / 8 divided by 7 / 10. What is the product of a number and a number is 20
One third of a number is 40% less than 21. Find the quotient of 3 / 5 * 7 / 8 divided by 7 / 10. What's the product of a number is 20, which is 10 less than 5 / 9 of B number. Find 2.5% of a number is 12 larger than 36. What's the number

This number is 21 (40% - 1 / 3) = 315
The product is 3 / 5 × (7 / 8 × 10 / 7)
=3/5×5/4
=3/4

How much is 120 ml?
Let me have a concept,
It doesn't count in other units of measurement

Half the volume of milk in a box

21 △ () = 7 / 20 = (): 40 = ()% 6.05 tons = () kg 3 square meters 8 square decimeters = () square meters
21 △ () = 7 / 20 = (): 40 = ()%
6.05 tons = () kg
3 square meters 8 square decimeters = () square meters

21 ÷ (60) = 7 / 20 = (14): 40 = (35)%
6.05 tons = (6050) kg
3 square meters 8 square decimeters = (3.08) square meters

A cylindrical container holds 1 / 2 of the water, which is exactly 120 ml. if the water in the cylindrical container is poured into a conical container with the same height as its bottom, how much water can be produced
What's the formula

40mL

5 times () = () 21 / 20 () = () divided by 40 + 1

There are countless answers
I think it should be 1.75 in the end
So the answer is
5 times (0.35) = (12) of 21 = 20 of (35) = (70) divided by 40 = 1.75

Two and three fifths of a liter = () liter () ml 150 seconds = () minutes
The least common multiple of the three prime numbers is 105. The three prime numbers are (), which convert 1 / 2 1:10 / 1 into the simplest integer ratio is (), and the ratio is ()

2 and 3 / 5 L = (2) l (600) ml
150 seconds = (2.5) minutes
The least common multiple of the three prime numbers is 105, which are (3) (5) (7)
The ratio of 1:2:1:10 to the simplest integer is (15:1), and the ratio is (15)
(9) △ 25 = 3 / 5 = 12: (20) = (0.6) (fill in decimal) = (60)%

How many water molecules are contained in 500ml mineral water? (the known density of water is 1g / ml, other substances are ignored)