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Vanyuwa [196]
3 years ago
15

Can someone please help with a lot of my questions??

Chemistry
1 answer:
Sophie [7]3 years ago
6 0

yeah sure i can help you

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<u>C Chemical Energy</u>

Explanation:

food gives us chemical energy which may be transformed to other later..

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In lab you reacted 60 grams of propane (C3H8) with 13 grams of oxygen gas (O2). Your
Andre45 [30]

Answer:

120g

Explanation:

Based on the reaction, when 1 mole of propane and 5 moles of oxygen react, 3 moles of CO2 and 4 moles of H2O are produced. The ratio of production is 3 moles of CO2 per 4 moles of H2O.

Thus, we need to convert mass of water to moles using its molar mass:

Moles H2O (Molar mass: 18g/mol):

63g H2O * (1mol / 18g) = 3.5 moles H2O

Converting to moles of CO2:

3.5 moles H2O * (3 moles CO2 / 4 moles H2O) = 2.625 moles CO2

Mass CO2 (Molar mass: 44g/mol):

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<h3>120g </h3>

5 0
3 years ago
What is the formula of iron(iii) oxide?
SCORPION-xisa [38]

Answer:

Fe2O3

Explanation:

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Can someone plz help me with this because I do not understand it ASP
AlladinOne [14]

Answer:

I'm not the best at chemistry but from what I remember you need to balance the equation and you need the arrows. It wants you to use double displacement and so thats the definition im assuming.

Explanation:

An example would be

Na2SO4 + SrCl2 --> 2 NaCl + SrSO4

This is a balanced equation.

https://en.intl.chemicalaid.com/tools/equationbalancer.php

This link will help you balance an equation.

Hopefully this helps I appologize if it doesn't.

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