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Chemistry
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A solution of sugar has a concentration of 3 g/dm3. What is the mass of sugar in 0.5 dm3 of solution?

The key to this question is understanding the relationship between concentration, mass and volume. Concentration shows how much of a substance (the mass) is packed into a space (the volume). This means th...

DD
Answered by Daniel D. Chemistry tutor
8318 Views

The equilibrium N2O4 (g) -->--< 2NO2 (g) is set up when N2O4 dissociates. When 0.0370 moles of N2O4 dissociates at 25 degrees in a 0.5dm3 sealed container, 0.0310 moles of N2O4 remains at equilibrium. Calculate the value of Kc for this reaction.

The first step is to formulate the Kc expression. Kc is the "concentration of the products / concentration of the reactants". We show concentration is in moldm-3 by using square brack...

HM
Answered by Harry M. Chemistry tutor
4012 Views

Describe how carbon dioxide helps maintain temperature on Earth

Carbon dioxide allows radiation of short wavelengths to pass through the atmosphere to the Earth and absorbs any outgoing radiation that has long wavelengths.

SG
Answered by Suruthi G. Chemistry tutor
7522 Views

Show the covalent bonding in terms of electrons in their outer shell for a molecule of Carbon Dioxide

I would use a whiteboard to show that the Carbon atom shares two pairs of electrons with each Oxygen molecule

MB
Answered by Marcus B. Chemistry tutor
1791 Views

How do you know if a molecule has ionic or covalent bonding?

Covalent bonding is between non-metal atoms and involved the sharing of electron pairs, whereas ionic bonding is between a metal and a non-metal and involves the transfer of an electron from the metal to ...

JB
Answered by Jemima B. Chemistry tutor
1859 Views

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