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sladkih [1.3K]
3 years ago
15

A gas at standard temperature and pressure was measured as having a mass of 1485 grams (g) in a volume of 750 liters (L). Which

of the following gasses could it be?
Mathematics
1 answer:
tangare [24]3 years ago
6 0

Answer:

Here we will use the relation:

Density = mass/volume.

We know that:

Mass = 1485g

Volume = 750L

Density = 1485g/750L = 1.98 g/L

We do not have the options in order to select the correct one, but knowing this density, we can suppose the possible gases.

Two "common" gases with densities similar to this one are:

Carbon Dioxide, with d = 1.977 g/L

Dinitrogen Monoxide, with d = 1.977 g/L

In both cases, if we round up we will get the same density that we calculated at the beginning, so either of these can be the correct option.

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Lucy had math and reading homework tonight. Lucy can solve each math problem in 5 minutes and she can read each page in 2.5 minu
drek231 [11]

Answer:

x=18,y=6,  graph is there for reference.

Step-by-step explanation:

Given,

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y is the number of  pages she read.

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As per given detail,

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And,

It is given that number of math problems Lucy solved is 3 times the number of pages she read.

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Join these two points.

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Let us assume on more point, say x=30 , we get y=10

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Join these two points.

We will get a point of intersection at (18,6)

Thus x=18 and y=6

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