4 years ago

Which determines the state of matter for any material?

Chemistry

1 answer:

Paul [167]4 years ago

8 0

Answer: the answer is A and C

Explanation: because they are really kind of both the same

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What the common uses for Bohrium?

lora16 [44]

Answer:

Explanation:

Bohrium's most stable isotope, bohrium-270, has a half-life of about 1 minute. It decays into dubnium-266 through alpha decay. Since only a few atoms of bohrium have ever been made, there are currently no uses for bohrium outside of basic scientific research.

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3 years ago

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What is the density of a block of wood that has a mass of 125grams and volume of 25.6mL?

Darya [45]

Since density is = to mass/volume, you would do this:

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3 years ago

Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2

Elena L [17]

Mass of carbon monoxide : 0.95 g

<h3>Further explanation</h3>

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

Fe₂O₃(s) + 3CO(g) → 2Fe(s) + 3CO₂

MW Fe₂O₃ : 159,69 g/mol

mol Fe₂O₃ :

$\tt \dfrac{1.8}{159.69}=0.0113$

mol ratio Fe₂O₃ : CO = 1 : 3, so mol CO :

$\tt 3\times 0.0113=0.0339$

mass CO (MW = 28,01 g/mol) :

$\tt m=mol\times MW\\\\m=0.0339\times 28.01\\\\m=0.950~g$

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3 years ago

If you have 3.54 g of H2, how many grams of NH3 can be produced?

morpeh [17]

3.54g H2 means you have 3.54 / 2 = 1.77 moles of H2, which means you have 1.77*2 = 3.54 moles of H atom.

Since 1 mole of NH3 has 3 moles of H, so you can produce 3.54 / 3 moles of NH3, which is (3.54/3) * (12+3) = 17.7 grams

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[B] electronegativity.

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