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3 years ago

What do fossil fuels come from?

Chemistry

1 answer:

lyudmila [28]3 years ago

4 0

Answer:

Fossil fuels are found underneath the Earth's surface at varying depths. These fuels - coal, oil, and natural gas - were formed as a result of the remains of dead plants and organic matter being buried and altered over millions of years.

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Why are lab rules important

valentina_108 [34]

Answer:

Because you can die if you dont be safe my guy.

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be safe in a lab it can be very dangerus and some times even deadly.

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3 years ago

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If aluminum has a density of 2.7 g/cm³, what is the volume of 2.7 grams of aluminum?

Lorico [155]

Answer:

Solution Density of aluminium = 2.7 g/Cm 3 In kg/ m 3 = 27 × 1000 10 =2700 kg/ m 3

Explanation:

Not much of one

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2 years ago

PLEASE HELP!!

LUCKY_DIMON [66]

Answer:

$5.1 - 2.3685 = 2.7315 \\$

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2 years ago

PLEASE HELP!!!!!!!!!

andreev551 [17]

The average atomic mass of the imaginary element : 47.255 amu

<h3>Further explanation </h3>

The elements in nature have several types of isotopes

Isotopes are elements that have the same Atomic Number (Proton)

Atomic mass is the average atomic mass of all its isotopes

Mass atom X = mass isotope 1 . % + mass isotope 2.% ..

isotope E-47 47.011 amu, 87.34%

isotope E-48 48.008 amu, 6.895

isotope E-49 50.009 amu, 5.77%

The average atomic mass :

$\tt avg~mass=0.8734\times 47.011+0.06895\times 48.008+0.0577\times 50.009\\\\avg~mass=41.059+3.310+2.886\\\\avg~mass=47.255~amu$

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2 years ago

What is the relationship between temperature and kinetic energy?

m_a_m_a [10]

Answer:

Kinetic energy is the energy that an object has because of its motion. The molecules in a substance have a range of kinetic energies because they don't all move at the same speed. As a substance absorbs heat the particles move faster so the average kinetic energy and therefore the temperature increases.

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3 years ago