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3 years ago

Using the Lewis dot structures of magnesium and oxygen, predict the ionic formula

Chemistry

1 answer:

Blizzard [7]3 years ago

7 0

Answer:

(edit: nvm I figured it out, here is the answer)

Explanation:

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I need help on #2 a and b. please explain steps and answer

shtirl [24]

Hope this helps you.

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3 years ago

What can be said about the shape of the infrared stretch of the O-H functional group in a carboxylic acid. Pick the best answers

kirza4 [7]

Answer: Strong (b)

Explanation:

INFRARED ACTIVE BONDS

Not all covalent bonds display bands in the IR spectrum. Only polar bonds do so. These are referred to as IR active.

The intensity of the bands depends on the magnitude of the dipole moment associated with the bond in question:

Strongly polar bonds such as carbonyl groups (C=0) produce strong bands.

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3 years ago

What are some benefits that come from volcanoes?

nataly862011 [7]

Answer:

Volcanoes cool off the earth by emitting heat from its interior. They also add islands and for example, Hawaii was created / is made out of volcanoes. The deposits from volcanoes can also be used for building materials. Volcanic explosions have caused the atmosphere and oceans to form. Volcanic deposits also create land which is fertile.

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3 years ago

What is Le chatelier's principle?

ser-zykov [4K]

Answer:

Le Chatelier's principle, also called Chatelier's principle or "The Equilibrium Law", is a principle of chemistry used to predict the effect of a change in conditions on chemical equilibria.

hope it helps ,pls mark me as brainliest

7 0

3 years ago

If the density of Mercury is 1.36 × 10 by 4 Kgm - 3 at 0 degrees. Calculate its value at 100 degrees and at 22 degrees. Take cub

Tasya [4]

Answer:

1.35 × 10⁴ kg/m³ at 22 °C; 1.34 × 10⁴ kg/m³ at 100 °C

Explanation:

The cubic expansivity (γ) of a liquid is the fractional change in volume per unit change in temperature.

$\gamma = (\frac{\Delta V }{ V_0} )(\frac{1 }{ \Delta T} )$ Multiply by V₀ΔT and transpose

ΔV = γV₀ΔT

and

V = V₀ + ΔV

===============

At 0 °C

Assume you have 1 m³ of Hg

ρ = m/V Multiply by V and transpose

m = ρV

ρ = 1.36 × 10⁴ kg/m³

m = 1.36 × 10⁴ × 1 = 1.36 × 10⁴ kg

===============

At 22 °C

Assume that you have 1 m³ of Hg

γ = 180 × 10⁻⁶ K⁻¹

ΔT = 22 °C – 0 °C = 22 °C

ΔV = 180 × 10⁻⁶ × 22

ΔV = 3.96 × 10⁻³ m³ Calculate volume

V = 1 + 0.00396

V = 1.00396 m³ Calculate density

ρ = 1.36 × 10⁴/1.00396

ρ = 1.35 × 10⁴ kg/m³

===============

At 100 °C

ΔT = 100 °C – 0 °C = 100 °C

ΔV = 180 × 10⁻⁶ × 100

ΔV = 0.0180 m³ Calculate volume

V = 1 + 0.0180

V = 1.0180 m³ Calculate density

ρ = 1.36 × 10⁴/1.0180

ρ = 1.34 × 10⁴ kg/m³

4 0

4 years ago