I'm doing a lab report for my science class and I need to calculate the mass of the water displaced in the graduated cylinder when an object is placed in. I'm in 7th grade so try to make it a bit easy to understand. Thanks(:
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Great for 7th grade. 1 kilogram (1,000 grams) is defined as being the weight of 1 liter of pure water. So a little math there tells us that 1 milliliter (1/1000th of 1 liter) of water weighs 1 gram (1/1000th of 1 kilogram). Figure out how many milliliters of water are displaced and since you know they weigh 1 gram each you should be able to calculate it. Since you're using a graduated cylinder that's easy. Say you have 10 ml of water in there, then drop in something and now you have 11.5 ml of water, you know 1.5 ml was displaced. So if 1.5 ml of water are displaced then 1.5 grams of water were displaced.
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There's a trick to figuring out the mass of water.
Density = mass/volume
Density of water = 1/1
So basically, fill your graduated cylinder up to whatever point you want. Mark that amount. This is your old amount of water. Place the item inside, and mark the second spot. This will be your new amount of water.
Take the new amount and subtract the old amount. This gives you the volume of the water displaced.
Because we know the density of water = 1, the mass of the water displaced has to equal the volume of the water displaced.
So if your new amount minus your old amount is 10 mL, your water weighs 10g. I hope that helped!
Density = mass/volume
Density of water = 1/1
So basically, fill your graduated cylinder up to whatever point you want. Mark that amount. This is your old amount of water. Place the item inside, and mark the second spot. This will be your new amount of water.
Take the new amount and subtract the old amount. This gives you the volume of the water displaced.
Because we know the density of water = 1, the mass of the water displaced has to equal the volume of the water displaced.
So if your new amount minus your old amount is 10 mL, your water weighs 10g. I hope that helped!
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How to calculate the mass of the water displaced?
I'm doing a lab report for my science class and I need to calculate the mass of the water displaced in the graduated cylinder when an object is placed in. I'm in 7th grade so try to make it a bit easy to understand. Thanks(:
Example:
Initially, the graduated cylinder contains 40 ml of water. As the object enters the water, the top surface of the water moves up. The volume of the displaced water is equal to the increase in volume.
Initial graduated cylinder reading = 40 ml
Reading with object in the water = 48 ml
Volume of the displaced water = 48 – 40 = 8 ml
Mass of displaced water = Volume* Density
Density of water = 1g/ml
Mass of displaced water = 8 ml * 1g/ml = 8 grams
If you have any more questions, make me one of your contacts. Yahoo answers will send your question to me and I will reply.
I'm doing a lab report for my science class and I need to calculate the mass of the water displaced in the graduated cylinder when an object is placed in. I'm in 7th grade so try to make it a bit easy to understand. Thanks(:
Example:
Initially, the graduated cylinder contains 40 ml of water. As the object enters the water, the top surface of the water moves up. The volume of the displaced water is equal to the increase in volume.
Initial graduated cylinder reading = 40 ml
Reading with object in the water = 48 ml
Volume of the displaced water = 48 – 40 = 8 ml
Mass of displaced water = Volume* Density
Density of water = 1g/ml
Mass of displaced water = 8 ml * 1g/ml = 8 grams
If you have any more questions, make me one of your contacts. Yahoo answers will send your question to me and I will reply.