3 years ago

What are giant covalent structures

1 answer:

4 0

Covalent bonding - giant covalent structures. ... The atoms are usually arranged into giant regular lattices - extremely strong structures because of the many bonds involved. The graphic shows the molecular structure of diamond and graphite: two allotropes of carbon, and of silica.

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Carly lives in an area with temperatures that are always very warm. Carly also lives in an area that is close to the equator. Wh

mariarad [96]

The answer would be B.

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Trey

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3 years ago

what is the density of an object that has a mass of 550 grams and displaces 25 ml of water? select all that apply. 22 ml/g .04 m

Black_prince [1.1K]

Density = mass / volume

D = 550 / 25

D = 22 g/mL

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3 years ago

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A first-order decomposition reaction has a rate constant of 0.00440 yr−1. How long does it take for [reactant] to reach 12.5% of

mina [271]

Answer:

473 year

Explanation:

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

Given:

To reach 12.5% of reactant means that 0.125 of $[A_0]$ is decomposed. So,

$\frac {[A_t]}{[A_0]}$ = 0.125

t = ?

$\frac {[A_t]}{[A_0]}=e^{-k\times t}$

$0.125=e^{-0.00440\times t}$

t = 473 year

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3 years ago

The combustion of gasoline produces carbon dioxide and water. assume gasoline to be pure octane (c8h18) and calculate how many k

IgorC [24]

<span>Answer: 2 C8H18 + 25 O2 => 16 CO2 + 18 H2O 1.0 kg = 1000 g C8H18 = 1000 g / 114.2293 g/mole = 8.75 moles C8H18 8.75 moles C8H18 produce (16/2) (8.75) = 70 moles CO2 70 moles CO2 = (70 moles) (44.0096 g/mole) = 3081 g CO2 = 3.1 kg CO2</span>

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4 years ago

I can’t find the answer, can you help me please?

Tatiana [17]

Answer: Warm ocean air then rises into the storm, then forming an area of low pressure underneath. :)

Explanation:

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3 years ago