Physics, asked by shreyanshpoddar, 6 months ago

- What is the density of water at 40C?​

Answers

Answered by TheSarcasticSmile
33

Answer:

0.99224g/cm^3

Explanation:

hope it helps you

Answered by rathoreyashasvi430
3

Explanation:

If you're still in school, you've probably heard this statement in your science class: "Density is the mass per unit volume of a substance". On Earth, you can assume mass is the same as weight, if that makes it easier.

If you're not still in school, then you probably forgot you ever even heard it. The definition of density, makes a lot more sense with a little bit of explanation. As long as an object is made up of molecules, and thus has size or mass, it has a density. Density is just the weight for a chosen amount (volume) of the material. A common unit of measurement for water's density is gram per milliliter (1 g/ml) or 1 gram per cubic centimeter (1 g/cm3).

Actually, the exact density of water is not really 1 g/ml, but rather a bit less (very, very little less), at 0.9998395 g/ml at 4.0° Celsius (39.2° Fahrenheit). The rounded value of 1 g/ml is what you'll most often see, though.

Water's density varies with temperature

Growing up with an older brother was difficult, especially when he had his friends over, for their favorite activity was thinking of ways to antagonize me. I was able to use water density once to at least play a trick on them, though. One hot summer day they climbed the huge hill next to our house to dig a hole to hide their bottle-cap collection. They got thirsty and made me go back home and bring them a gallon of water. That gallon of tap water at 70°F weighed 8.329 pounds, which was a lot for a 70-pound kid to haul up a huge hill.

So, when they demanded another gallon of water, I consulted the "Internet" of that day—an encyclopedia— and found out that a gallon of water at the boiling point only weighed 7.996 pounds! I ran up the hill carrying my gallon of water that weighed 0.333 pounds less; and ran back down even faster, their angry voices fading behind me.

Temperature

(°F/°C) Density

(grams/cm3 Weight

(pounds/ft3

32°F/0°C 0.99987 62.416

39.2°F/4.0°C 1.00000 62.424

40°F/4.4°C 0.99999 62.423

50°F/10°C 0.99975 62.408

60°F/15.6°C 0.99907 62.366

70°F/21°C 0.99802 62.300

80°F/26.7°C 0.99669 62.217

90°F/32.2°C 0.99510 62.118

100°F/37.8°C 0.99318 61.998

120°F/48.9°C 0.98870 61.719

140°F/60°C 0.98338 61.386

160°F/71.1°C 0.97729 61.006

180°F/82.2°C 0.97056 60.586

200°F/93.3°C 0.96333 60.135

212°F/100°C 0.95865 59.843

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