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Calculate the heat of formation (∆Hf) of water (H2O) given the following reactions and their respective heats of reaction (∆Hr):2H2(g) + O2(g) → 2H2O(g); ∆Hr = -484 kJ/mol ½ O2(g) + H2(g) → H2O(l); ∆Hr = -285.8 kJ/mol Note: The heat of formation is the amount of heat released or absorbed when one mole of a compound is formed from its elements in their standard states.

answered Jan 23 in Chemical bonding

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According to the cognitive-neoassociation theory, why might someone who has just experienced a negative event be more likely to engage in aggressive behaviour?

answered Jan 20 in Psychology

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According to the social identity theory, why do individuals form social groups?

asked Jan 20 in Psychology

1 answer 6 views

What are some of the limitations of using experiments to study group behaviour?

asked Jan 17 in Psychology

0 answers 16 views

Who proposed the biopsychosocial model of pain?

asked Jan 16 in Psychology

1 answer 27 views

Who proposed the Self-Efficacy Theory?

asked Jan 15 in Psychology

1 answer 19 views

What is the memory consolidation theory of sleep?

asked Jan 14 in Psychology

1 answer 18 views

Which types of compounds are more likely to burn easily?

answered Jan 8 in Science

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What are the small units that comprise nucleic acids?

asked Jan 6 in Science

1 answer 21 views

What are mammals called that reproduce by laying eggs?

asked Jan 3 in Science

1 answer 6 views

What are biological catalysts that speeds up biochemical reactions?

answered Jan 2 in Science

1 answer 33 views

Our sun is on the main sequence, like most stars, and it is classified by what colorful name?

answered Dec 31, 2024 in Science

1 answer 20 views

Sutures, gomphoses, and syndesmoses are types of what, which are found where adjacent bones are strongly united by connective tissue?

answered Dec 27, 2024 in Science

1 answer 45 views

Which stage is specialized for dispersal & reproduction?

asked Dec 27, 2024 in Science

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