BlancheLibrandi BlancheLibrandi

27-04-2014
Chemistry

Answered

How much heat is given off when 8 g of hydrogen reacts in: 2H₂ + O₂ → 2H₂O; ΔH = -115.60 kcal

A-57.8 kcal
B-115.6 kcal
C-173.4 kcal
D-231.2 kcal
E-462.4 kcal

Verified Answer :

kltyuiop kltyuiop

28-04-2014

ΔΗ= -115.6 kJ/mol
H2 has a Mr of 2, so as mol=mass/mr we can work out that there are 4 moles of H reacting

Therefore we multiply -115.6 by 4 = -462.4

Answer Link

Related Questions

For every dime spent Davida receives 15 food pebbles to feed the animals in the petting zoo Davida has fed the animals a total of 135 food pebbles Write and sol

Please help me I dont know how to do it

Regular copyright is more restrictive than any other kind of license true or flase

What motivated Moctezuma I to reorganize the Aztec government Concern about civil war Fear over Spanish invasion Competition with the Incas The massive toll of

My mother and attend the same Bible class

Mai bought a television for 325 The tax rate is 8 Which proportion can be used to find the amount of tax Mai will pay

when colombia became independent

In 4-5 sentences, explain how the conflicts in *The Flames of Naranji* drive the plot and reveal Mira's character traits. Use evidence from the story to support

Roberta needs 12 zippers to make 3 of the same backpacks If Roberta has 48 zippers how many of those same backpacks can she make

If 15 baseballs weigh 75 ounces how many baseballs weigh 15 ounces

Web Analytics