Help me please.List two properties of a material that you can observe using your senses

Chemistry

1 answer:

sasho [114]4 years ago

5 0

Well I would guess the 5 common senses if thats what it is called like seeing hearing and stuff like that

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An empty Erlenmeyer flask weighs 241.3 g. When filled with water (d = 1.00 g/cm³), the flask and its contents weigh 489.1 g. (a)

miskamm [114]

The answer is- Volume of flask = 247.8 $cm^3$ or 247.8 mL.

Density (d) is defined as mass of substance divided by its volume. Thus, if mass and density are known, then Volume can be determined.

What is the formula of volume in terms of density?

Let mass of substance be 'm' and volume be 'V'. Thus, as per the definition of density, it is expressed as-

$d = \frac{m}{V}$

Thus, volume can be expressed as-

$V =\frac{m}{d}$

Now, mass of empty flask = 241.3 g and the mass of (flask + Water) = 489.1 g.

Thus, mass of water = $489.1\ g- 241.3\ g = 247.8\ g$ .

Thus, mass of water = 247.8 g and density of water = $1.00\ g/cm^3$ . Its volume is calculated as-

$V = \frac{247.8\ g}{1.00\ g/cm^3}=247.8\ cm^3$

Hence, volume of flask = 247.8 $cm^3$ or 247.8 mL.

To learn more about Density and Volume, visit:

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2 years ago

When preparing a buret for use in lab, the buret must always be cleaned thoroughly. prior to being filled with solution, the bur

erastova [34]

It is rinsed one last time with the solution to be measured because if there is water in the burret, then it could alter the results. Slightly, but it is still altering it.

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Which is a compound? A) Kr B) O2 C)Cl2 D)CuF2

34kurt

It is related to Chemistry. That’s something that I am not familiar with, but I know the answer is D.

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Balance the chemical equation

brilliants [131]

Answer:

$Fe_2O_3+3CO\Rightarrow \:2Fe+3CO_2$