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Murljashka [212]
3 years ago
6

List three physical properties of copper

Chemistry
1 answer:
Elena L [17]3 years ago
3 0
⇒ a reddish, brownish color
⇒ has a shine/glow
⇒ excellent conductor
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Describe how an ion is made​
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Ions are formed by the addition of electrons to, or the removal of electrons from, neutral atoms or molecules or other ions; by combination of ions with other particles; or by rupture of a covalent bond between two atoms
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recommend an element use to fill bottles that contain ancient paper. the element should be a gas at room temperature, should be
Eduardwww [97]

Okay so we are given these requirements:

element which can be used to stuff bottles that enclose ancient paper
must be a gas at room temperature
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The only element that comes into my mind is:

<span>Argon</span>

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3 years ago
H3C6H507 + H2O + H3O+ + H2C6H507<br> acid <br> base
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How is 8.2 x 10^4 - 6.3 x 10^3 written in scientific notation
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Answer:

= 7.57 × 104

(scientific notation)

= 7.57e4

(scientific e notation)

= 75.7 × 103

(engineering notation)

(thousand; prefix kilo- (k))

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Just in case this is all of them

6 0
3 years ago
What volume in mt, of 0.5a M1HCI solution is needed to neutralize 77 ml of 1.54 M NaOH solution?
Rainbow [258]

Answer:

237.2 mL.

Explanation:

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(XMV) acid = (XMV) base.

where, X is the no. of (H) or (OH) reproducible in acid or base, respectively.

M is the molarity of the acid or base.

V is the volume of the acid or base.

<em>(XMV) HCl = (XMV) NaOH.</em>

<em></em>

For HCl; X = 1, M = 0.5 M, V = ??? mL.

For NaOH, X = 1, M = 1.54 M, V = 77.0 mL.

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8 0
3 years ago
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