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Nata [24]
3 years ago
13

Lead Melting a Chemical Change b Physical Change

Chemistry
1 answer:
zepelin [54]3 years ago
6 0

Answer:

Melting is an example of physical change.

Explanation:

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During fusion
Veronika [31]

Answer:

A

Explanation:

uranium atoms are fused together

3 0
3 years ago
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What is the expected freezing point of a 0.50 m solution of li2so4 in water? Kf for water is 1.86 ∘c/m.
In-s [12.5K]

Answer: -2.79°C

Explanation:

Supposing complete ionization:

Li2SO4 → 2 Li{+} + SO4{2-}  [three ions]

(0.50 m Li2SO4) x 3 = 1.50 m ions  

(1.50 m) x (1.86 °C/m) = 2.79°C change

0°C - 2.79°C = -2.79°C

4 0
4 years ago
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Comparing the energies of the following intermolecular forces on a kJ/mol basis, which would normally have the highest energy (i
Kay [80]

Answer: option C, ion-dipole

Explanation:

Since the order of intermolecular forces is as follows

Ion-dipole > Hydrogen bonding> Dipole-dipole> dipole -induced dipole> ion induced dipole> dispersion forces

8 0
3 years ago
How many total atoms are represented by this formula 3NaOH? A.1 B.3 C.6 D.9???
Sonja [21]

Answer:

D. 9.  

Step-by-step explanation:

One formula unit of NaOH contains <em>three atoms</em>:  1 Na, 1 O, and 1 H.

3 formula units × (3 atoms/1 formula unit) = 9 atoms


7 0
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Alice is 5 km away from home. How many centimeters is she away from home?
NeTakaya

Answer: 500000 centimeters

Explanation:

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