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OLEGan [10]
3 years ago
11

What properties would you expect for CaO? Select all that apply.

Chemistry
2 answers:
marissa [1.9K]3 years ago
8 0

Answer is:

It is likely soluble in water.

It will likely light up a bulb in a conductivity apparatus (CaO(l)).

It will likely have a high melting point.

1) Calcium oxide (CaO) has ionic bonds between calcium cations (Ca²⁺) and oxygen anions (O²⁻). It reacts with water and form calcium hydroxide:

CaO(s) + H₂O(l) → Ca(OH)₂(aq).

2) Ionic solid calcium oxide dissolved in water conduct electricty due to the dissociation Ca(OH)₂(aq) → Ca²⁺(aq) + 2OH⁻(aq).

3) Because it has strong ionic bonds, it has high melting point (around 2600°C).

Reil [10]3 years ago
8 0
Could you tell me what to accept so I could see if I can help you

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Lubov Fominskaja [6]

Answer:

..             ..

O : : C : : O

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Explanation:

8 0
3 years ago
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The density of dry air measured at 25 Celsius is 1.19 times 10 to the negative 3 what is the volume of 50.0g of air
Oksana_A [137]

Answer:

4.2 x 10⁴ mL

Explanation:

Data Given:

Density (d) of air =  1.19 x 10⁻³g/mL

Mass of the air (m) = 50 g

Volume of the air (V) = ?

Solution:

Formula will be used

                d = m/V

As we have to find volume so rearrange the above equation

               V = m/d . . . . . . . . . . . (1)

Put values in above equation 1

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So,

volume of dry air = 4.2 x 10⁴ mL

4 0
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imagine you have four food dyes to test A, B, C and D imagine that you are going to investigate which food dye diffuses more qui
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