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1 year ago

) What is the most notable difference between particles in the solid phase and the liquid phase?

1 answer:

7 0

Answer: Particles in the solid phase are tightly compact and they vibrate, while particles in the liquid phase move freely, randomly, and with more room to move

Explanation:

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Both diamond and graphite (i.e. pencil lead) consist of carbon atoms. They are only different in their crystalline structures. O

prisoha [69]

Answer:

Moles of carbon atoms = 3.33 × $10^{-6}$ mol

No. of atoms of C in Diamond = 2.007 × $10^{28}$ atom

Atoms of graphite = 6.27 × $10^{23}$ Atoms

Explanation:

given data

Cost of 0.2g of diamond = $5000

Cost of 25 g of graphite = $ 2

solution

we know cost of 0.2g of diamond is $ 5000 so that for 1$

if buy 1$ = $\frac{0.20}{5000}$

1$ = 4.0 × $10^{-5}$ g Carbon

and Moles of carbon atoms is express as

Moles of carbon atoms = Given mass of Carbon ÷ atomic mass of C .........1

Moles of carbon atoms = 4.0 × $10^{-5}$ g/ 2.0g

Moles of carbon atoms = 3.33 × $10^{-6}$ mol

and

No. of atoms of C in Diamond = No. of moles × Avogadro NO ..............2

No. of atoms of C in Diamond = 3.33 × $10^{-6}$ mol × 6.022 × $10^{28}$

No. of atoms of C in Diamond = 2.007 × $10^{28}$ atom

Graphite

and wew have given Cost of 25 g of graphite is $2 so for but 1$ we get

for buy $1 = 25÷2 = 12.5 g Of graphite

Moles of graphite = 12.5÷12 = 1.04 mol

Atoms of graphite = 1.04 × 6.022 × 1023

Atoms of graphite = 6.27 × $10^{23}$ Atoms

6 0

3 years ago

When 16.4 g of steam at 100°C condenses how much heat is released?

OLEGan [10]

Answer:

37064 J

Explanation:

Data Given:

mass of Steam (m) = 16.4 g

heat released (Q) = ?

Solution:

This question is related to the latent heat of condensation.

Latent heat of condensation is the amount of heat released when water vapors condenses to liquid.

Formula used

Q = m x Lc . . . . . (1)

where

Lc = specific latent heat of condensation

Latent heat of vaporization of water is exactly equal to heat of condensation with - charge

So, Latent heat of vaporization of water have a constant value

Latent heat of vaporization of water = 2260 J/g

Latent heat of condensation of water will be = - 2260 J/g

Put values in eq. 1

Q = (16.4 g) x (- 2260 J/g)

Q = - 37064 J

So, 37064 J of heat will be released negative sign indicate release of energy

4 0

4 years ago

What is NOT a cause of an oil spill?

katrin [286]

Answer:

The answer is #1

Explanation:

oil does not come out of valcanos

6 0

3 years ago

A volume of 30.0 mL of a 0.140 M HNO3 solution is titrated with 0.570 M KOH. Calculate the volume of KOH required to reach the e

igomit [66]

Answer:

7.37 mL of KOH

Explanation:

So here we have the following chemical formula ( already balanced ), as HNO3 reacts with KOH to form the products KNO3 and H2O. As you can tell, this is a double replacement reaction,

HNO3 + KOH → KNO3 + H2O

Step 1 : The moles of HNO3 here can be calculated through the given molar mass ( 0.140 M HNO3 ) and the mL of this nitric acid. Of course the molar mass is given by mol / L, so we would have to convert mL to L.

Mol of NHO3 = 0.140 M $*$ 30 / 1000 L = 0.140 M $*$ 0.03 L = .0042 mol

Step 2 : We can now convert the moles of HNO3 to moles of KOH through dimensional analysis,

0.0042 mol HNO2 $*$ ( 1 mol KOH / 1 mol HNO2 ) = 0.0042 mol KOH

From the formula we can see that there is 1 mole of KOH present per 1 moles of HNO2, in a 1 : 1 ratio. As expected the number of moles of each should be the same,

Step 3 : Now we can calculate the volume of KOH knowing it's moles, and molar mass ( 0.570 M ).

Volume of KOH = 0.0042 mol $*$ ( 1 L / 0.570 mol ) $*$ ( 1000 mL / 1 L ) = 7.37 mL of KOH

5 0

4 years ago

A theory that has been proven true repeatedly over time and never disproven is called ??

Sedaia [141]

<span>A theory that has been proven true repeatedly over time and never disproven is called a law</span>

8 0

3 years ago

) What is the most notable difference between particles in the solid phase and the liquid phase?​

) What is the most notable difference between particles in the solid phase and the liquid phase?