Since cups measure volume and grams measure mass it will depend on the density of what is being measured. It is different for flour vs. sugar, for example. This converter allows you to specify ingredients- http://www.gourmetsleuth.com/cookingconversions.asp?Action=find 450g of what? If its liquid, it's a little less than 2 cups.
Approximately 2 ΒΌ cups of sugar is equal to 450 grams.
450 grams of water is approximately equal to 1.9 cups.
There is 125 grams in a cup. So 450 is 3.6 cups
450 ml is almost 2 cups.
450 grams of water is 2 cups
There is 3.5 cups of sugar in 450 grams. There is also 100 ounces of sugar in 450 grams of sugar.
2 Cups White Sugar weighs 450 gram. (2c means 2 Cups)
3.5273962 ounces.
254 Grams of chocolate is 1.4 cups. This is because .27 cups weighs 50 grams.
That is approximately 3.61 cups
3 cups (420 gr.) + 2 spoons (30 gr.)=450 gr. flour
The weight equivalent of 400 grams = 14 oz. (1 lb. or 16 oz. = 450 grams)