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4 years ago

Gerry is looking at salt under a powerful microscope and notices a crystalline structure. What can be known about

Chemistry

1 answer:

Allushta [10]4 years ago

7 0

Answer:

The atoms are vibrating in place.

Explanation:

One of the properties of an ionic substance is the possession of a crystalline structure. As Gerry observed the salt under a microscope, he discovered that it has a crystalline structure. Crystalline salts are all ionic in nature, hence the salt observed by Gerry is an ionic salt.

Solids containing a definite crystalline structure always has their particles vibrating in place. This is immediately evident as Gerry looks at the salt through a microscope.

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Consider an insulated container in which water (2.58 g) solidifies at 0 oC and 1 atm on the surface of a 55 g aluminum block. As

yarga [219]

Answer:

17.41°C is the change in temperature of the aluminum block.

Explanation:

Latent heat of fusion water = 334 J/g

Heat required to freeze 1 gram of water = -334 J

Heat required to freeze 2.58 grams of water = Q

$Q=2.58 g\times (-334 J/g)=-861.72 J$

Heat lost by water will be equal to heat gained by the aluminum block

$Q'=-Q$

$Q'= -(-861.72 J)=861.72 J$

Formula used to calculate heat absorbed by substance:

$Q=mc\Delta T$

Where:

Q = heat absorbed by substance

c = specific heat of substance

m = Mass of the substance

ΔT = change in temperature of the substance

We have :

Mass of aluminum block= m= 55 g

Heat capacity of aluminum = c = 0.9 J/g°C

Change in temperature of the aluminum block= ΔT = ?

Heat absorbed by the aluminum = Q'

$861.72 J=55 g\times 0.9 J/g^oC\times \Delta T$

$\Delta T=17.41 ^oC$

17.41°C is the change in temperature of the aluminum block.

8 0

4 years ago

Chemical Formula and IUPAC Name For Cinnamic Acid???

NNADVOKAT [17]

To answer this kind of questions you need to do some research (in books, magazines or Internet).

As result of my research this is the answer:

IUPAC name: (2E)-3Phenylprop-2-enoic acid.

The molecular formula is C9H8O2

Or: draw a bencene structure and attach a propenoic acid (you can see the drawing on the attached file).

Download pdf

3 0

3 years ago

The density of gold is 19.3 g/mL. You have 35 g of gold, what must be the

cricket20 [7]

Answer:

1.8mL

Explanation:

What is the volume?

Density = Mass / Volume

19.3g/mL = 35g/v

19.3g/mL (v) = 35g/v (v)

19.3g/mL x v = 35g

v = 35g/19.3g/mL

v = 1.8mL

3 0

3 years ago

Consider the following reaction at equilibrium. What will happen if FeS2 is added to the reaction? 4FeS2(s) + 11O2(g) â‡Ś 2Fe2O3

aivan3 [116]

4FeS₂ + 11O₂ → 2Fe₂O₃ +8SO₂

What happen if FeS₂ is added to the reaction is that

The reaction will shift in the direction of the products

Explanation

FeS₂ is a reactant in reaction above .

When more of reactant added to a system at equilibrium, it increases the concentration of reactant molecules.

According to collision theory,this increase the number of collisions per second of reactant molecule and therefore more product is formed.

5 0

4 years ago

Read 2 more answers

If a radius of a circle is 7 cm, what is its perimeter? please explain in full detail...

storchak [24]

Explanation:

perimeter of circle - 2pieR

- pie D

radius R - 7 cm

perimeter- 2×22/7×7 (7 and 7 got cancalled)

2×22

44 cm

7 0

3 years ago