3 years ago

In the balanced equation 4Fe + 3O2 = 2Fe2O3 how many atoms of iron (Fe) are reacting with every three molecules of oxygen (O2)?

1 answer:

5 0

This balanced equation shows us the ratios of reactants and products, so for every 3 oxygen molecules, we see that 4 iron atoms react as well. The answer is 4.

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2Na(s) + Cl2(g) - 2NaCl(s) + 822 kj

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Explanation:

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3 years ago

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How could you ensure that all the spectroscopes used the same calibration line and equation? What would you need to be sure was

NISA [10]

People had asked this many times and that is why they came up with methods and standards that will answer these type of questions. You can look it up in the NIST or the National Institute for Standards and Technology.

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3 years ago

What is the density of aluminum in grams per cubic centimeter?

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Answer:

Density of aluminum is 2.699 g/cm^3

Explanation:

Density of a given material can be defined as the mass of the substance present in a unit volume. Mathematically it can be expressed as:

$Density = \frac{Mass}{Volume}$

Units: g/cm^3 or kg/m^3

Aluminum (Al) is one the lightest element and is known to have a density of 2.699 g/cm^3

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Iron (Fe) is classified as a metal while Silicon (Si) is classified as a metalloid. Which physical property do these two element

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3 years ago

What are in the energy levels that surround the nucleus of an atom?

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Electrons are the thing in the outer energy levels

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