18 cups, 4.5 quarts. A good average to figuring out snow to water ratio is 12-1. So there 1/12 of a cubic foot of snow will be the volume of water. An ounce is 1 inch sq. 12x12 is 144 cubic inches of water. 144 divided by 8 ounces to a cup is 18 cups. There fore 4.5 quarts.
You need to know how much a cubic foot of snow weighs. It depends on the sort of snow. There is 1500 cu ft of snow on the roof.
Snow is not uniform for density so you would have to weigh the cubic foot you are interested in. Each pound or kilogram would be composed of 1/9 hydrogen and 8/9 oxygen (by mass) since the molecular weight of water is 18, the atomic weight of hydrogen is 1 and the atomic weight of oxygen is 16. Based on 1 cubic foot of snow being about 10% the weight of a cubic foot of water, it would weigh approximately 6.25 pounds and contain about 5.56 pounds of oxygen.
when their is a foot of snow
It depends on how much you have!! One shovelful of snow, for example, weighs less than the amount of snow on your driveway. I suspect what you are really asking is not how much snow weighs but how much it weighs per cubit foot or cubic yard. Weight per unit volume is called density. But even that is tricky with respect to snow. The density of snow varies greatly. Lightly packed powder weighs very little per cubic foot, whereas slushy, wet snow can weigh over 62 pounds per cubic foot -- about the density of water.
It depends on what the soil contains. It may contain sand or gravel. It may contain water. It may contain little or much organic material. It may be highly or loosely compacted. On the average, however, the density of ideal topsoil is about 1.25 grams per cubic centimeter, or about 78 pounds per cubic foot.
If it's heavily compacted snow, then one cubic foot weighs in at about 25 lbs. At 8 lbs to the quart, you are looking at less than a gallon of water. Closer to 3 quarts of water.
It turns out that square feet are a measure of area and as such are two-dimensional quantifier. A square foot of anything will weigh nothing because the material, the air or lead or anything else, will be 12 inches long by 12 inches wide by zero inches thick. If it was a cubic foot of air, i.e., a volume of air occupying a space 12" x 12" x 12", it would weigh about 0.08 pounds at standard temperature and pressure.
On average, a cubic yard of snow can weigh anywhere from 500 to 800 pounds, depending on factors such as snow density and moisture content.
On average, 1 gallon of water would convert to roughly 0.133 cubic feet of snow if the snow's density is around 20 pounds per cubic foot. However, the exact conversion can vary based on factors such as the snow's density, moisture content, and temperature.
Melted snow is water. Water, because it is a liquid, is hard to weigh as you normally only weigh solids. Liquids would have to be measured litres or gallons. So the answer to that question would depend on how much snow had actually melted- eg. 12% ice and 78 % is water and 10% is debris caught in the snow as it fell
To convert cubic feet of snow to gallons of water, you need to consider the density of snow. Snow typically has a density of about 10% of water, so you can multiply the cubic feet of snow by 0.1 to get the cubic feet of water, and then multiply by 7.48 to convert to gallons.