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pashok25 [27]
3 years ago
8

Which statement describes the electron sea model for metallic bonding?

Chemistry
2 answers:
Julli [10]3 years ago
7 0

Answer:

This model is the simplest model.  

Explanation:

katrin [286]3 years ago
5 0

This model is the simplest model.  

110% sure. :)

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After completing an experiment to determine gravimetrically the percentage of water in a hydrate, a student reported a value of
zzz [600]

Answer:

A. Strong initial heating caused some of the hydrate sample to spatter out of the crucible.

Explanation:

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The percentage of water in the sample is lower than expected.

A. Strong initial heating caused some of the hydrate sample to spatter out of the crucible:

If part of the sample is splashed from the crucible the mass of water detected will be less.

B. The dehydrated sample absorbed moisture after heating:

If the sample absorbs water after heating the percentage of water would be higher than expected.

C. The amount of the hydrate sample used was too small:

Depending on the sample size, different procedures can be chosen for analysis.

D. The crucible was not heated to constant mass before use:

In many occasions the crucible is heated next to the sample and not in previous form.

E. Excess heating caused the dehydration sample to decompose:

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4 0
3 years ago
A 24.00 mL sample of a solution of Pb(ClO3)2 was diluted with water to 52.00 mL. A 17.00 mL sample of the dilute solution was fo
klio [65]

Answer:

0.238 M

Explanation:

A 17.00 mL sample of the dilute solution was found to contain 0.220 M ClO₃⁻(aq). The concentration is an intensive property, so the concentration in the 52.00 mL is also 0.220 M ClO₃⁻(aq). We can find the initial concentration of ClO₃⁻ using the dilution rule.

C₁.V₁ = C₂.V₂

C₁ × 24.00 mL = 0.220 M × 52.00 mL

C₁ = 0.477 M

The concentration of Pb(ClO₃)₂ is:

\frac{0.477molClO_{3}^{-} }{L} \times \frac{1molPb(ClO_{3})_{2}}{2molClO_{3}^{-}} =0.238M

4 0
3 years ago
How is the atomic mass of an element calculated? A. by determining the number of electrons in the outer orbital B.by determining
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By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.

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Which of the following chemical symbols represents the element sodium?
lina2011 [118]
Chemical symbols on the periodic table represent an element. 

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3 years ago
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