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Andre45 [30]
3 years ago
5

Is a diamond a homogeneous or heterogeneous mixture or a substance

Chemistry
1 answer:
DerKrebs [107]3 years ago
5 0

Answer:

heterogeneous

Explanation:

It's a heterogeneous mixture. Diamond is made of just one element: carbon. Each carbon atom in diamond is connected to four other carbon atoms, in a crystal that extends on and on. There are other forms of pure carbon where the atoms are bonded differently, notably charcoal and graphite.

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A silver cube with an edge length of 2.42 cm and a gold cube with an edge length of 2.75 cm are both heated to 85.4 ∘C and place
kakasveta [241]

Answer:

Explanation:

Volume of silver cube = 2.42³ = 14.17 cm³

mass of silver cube = volume x density

= 14.17 x 10.49 = 148.64 gm

Volume of gold cube = 2.75³ = 20.8  cm³

mass of gold cube =  20.8 x 19.3 = 401.44 gm

specific heat of silver and gold are .24 and .129 J /g°C

mass of 112 mL water = 112 g

Heat absorbed = heat lost = mass x specific heat x temperature fall or rise

Heat lost by metals

= 148.64 x .24 x ( 85.4 -T) + 401.44 x .129 x ( 85.4 - T )

= (35.67 + 51.78 ) x ( 85.4 - T )

87.45 x ( 85.4 - T )

= 7468.23 - 87.45 T

Heat gained by water

= 112 x 1 x ( T - 20.5 )

= 112 T - 2296

Heat lost = heat gained

7468.23 - 87.45 T = 112 T - 2296

199.45 T = 9764.23

T = 48.95° C

7 0
3 years ago
What fraction can be used in conversion of 32 m3 to mm3
zimovet [89]
The calculation is (Measurement in m³ x 1000³)


Therefore

Measurement in m³ x 1 000 000

Its not a fraction as there are 1000mm in a m, so to convert from m to mm you must multiply
5 0
2 years ago
Read 2 more answers
In glycolysis, what starts the process of glucose breakdown?
Lostsunrise [7]

Answer:

That would be ATP, hope this helps! :)

6 0
2 years ago
!!HELP ASAP!! How does temperature affect the rate of a reaction?
vitfil [10]

Answer:

I believe your answer is A

Explanation:

hope this helps ;)

8 0
3 years ago
Read 2 more answers
I need help on this its due Monday
atroni [7]

The properties of the elements can be determined from their electron configuration

<h3>Further explanation</h3>
  • Mg ⇒electron configuration :[Ne] 3s²

outer electron : 2 (3s²)

lose(2 electron)

charge : +2

cation (positive)

symbol : Mg²⁺

  • Br⇒electron configuration : [Ar] 4s²3d¹⁰4p⁵

outer electron : 7 (4s²4p⁵)

gain ( 1 electron)

charge : -1

anion (negative)

symbol : Br⁻

Helium⇒electron configuration : 1s²

outer electron : 2 (1s²)

stabil(no gain/no lose)

charge : 0

neutral

symbol : He

  • Nitrogen ⇒electron configuration : [He] 2s²2p³

outer electron : 5 ( 2s²2p³)

gain(3 electron)

charge : -3

anion

symbol : N³⁻

6 0
2 years ago
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