very hard
You might be talking about ice but hard water is sourced from limescale rock and the limescale is in the water and that is what you get in your kettle when you dont filter the hard water.
To prepare a dilute solution.
hard water is which has no ability to lather with soap standard hard water contains 1mg of calcium carbonate in every 1ml of water.
water gas is prepared by steam over white hot coke
very hard
Work hard and eat your wheaties
Train long and hard.
To work hard with consistency
you have to study really hard
Take algebra and study very hard.
Put water in it
study hard
Rivers are fresh water.
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How do i prepare a new hard disk drive for installation of a windows 98 system
by hard working