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stepladder [879]

3 years ago

5

Which of the following occupies a volume? solids liquids gases all of the above

2 answers:

nataly862011 [7]3 years ago

7 0

Solids occupy a volume

nignag [31]3 years ago

7 0

A liquid has a definite volume, but not a definite shape. In a liquid, the particles move in random directions but are sufficiently attracted to each other to maintain a definite volume. Gas does not have definite shape or volume. In a gas the particle are far apart which have little attraction to each other and move at high rates of speeds taking shape and volume of their container. Hope this helps

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A farmer has a large field with one type of

Hoochie [10]

Answer:

Disagree

Explanation:

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3 years ago

Darkness conceals hazards such as

Studentka2010 [4]

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3 years ago

In the following reaction, how many grams of nitroglycerin C3H5(NO3)3 will decompose to give 25 grams of CO2?

gogolik [260]

4C₃H₅(NO₃)₃ $_{(l)}$ ------> 12CO₂ $_{(g)}$ + 6N₂ $_{(g)}$ + 10H₂O $_{(g)}$ + O₂ $_{(g)}$

mol of CO₂ = $\frac{mass}{molar mass}$

= $\frac{25g}{44.01 g/mol}$

mol ratio of CO₂ : C₃H₅(NO₃)₃

12 : 4

∴ if mole of CO₂ = 0.568 mol

then " " C₃H₅(NO₃)₃ = $\frac{0.568 mol}{12} * 4$

= 0.189 mol

∴ mass of nitroglycerin = mole * Mr

= 0.189 mol * 227.0995 g / mol

= 43.00 g

8 0

2 years ago

Which of the following is an example of how a scientist might use a model?

igomit [66]

I do believe the answer is:D.

8 0

3 years ago

What volume of water (solute) (d = 1.00 g/mL) should be added to 600. mL of ethanol (solvent, C2H5OH) in order to have a solutio

Ugo [173]

Answer: Volume of water to be added is 116 ml.

Explanation:

Elevation in boiling point is given by:

$\Delta T_b=i\times K_b\times m$

$\Delta T_b=T_b-T_b^0=(95.0-78.4)^0C=16.6^0C$ = elevation in boiling point

i= vant hoff factor = 1 (for non electrolyte)

$K_b$ =boiling point constant = $1.22^0C/m$

m= molality

$\Delta T_b=i\times K_b\times \frac{\text{mass of solute}}{\text{molar mass of solute}}\times \text{weight of solvent in kg}}$

Density of solvent = $\frac{\text {mass of solvent}}{\text {Volume of solvent}}$

$0.789g/ml=\frac{\text {mass of solvent(ethanol)}}{600ml}$

${\text {mass of solvent(ethanol)}=473.4g=0.4734 kg$ (1kg=1000g)

Mass of solute (water) = x g

$16.6^0C=1\times 1.22\times \frac{x}{18g/mol\times 0.4734kg}$

$x=116g$

Density of solute = $\frac{\text {mass of solute}}{\text {Volume of solute}}$

$1.0g/ml=\frac{116g}{\text {Volume of solute(water)}}$

${\text {Volume of solute(water)}}=116ml$

Thus the volume of water to be added is 116 ml.

6 0

3 years ago