Chemistry, 30.07.2019 01:20 brandyjune9546

Hydrogen iodide, hi, is formed in an equilibrium reaction when gaseous hydrogen and iodine gas are heated together. if 20.0 g of hydrogen and 20.0 g of iodine are heated, forming 10.0 g of hydrogen iodide, what mass of hydrogen remains unreacted?

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Answer from: Airport12lt

19.92 grams

Explanation:

This questioned can be analysed on this table. All values that have been given in the question, are filled into the table as number of moles however, not as masses. I've written the values that were in the question in bold

H2 + I2 > 2HI

Initial (mol) 9.922 0.0788 0

change (mol) -0.03909 -0.03909 +0.07818

equil (mol) 9.88291 0.03971 0.07818

As we can see 9.8829 mol of hydrogen remains unreacted. Converting that to mass:

mass(hydrogen)=mol*molar mass = 9.8829 mol * 2.01568

= 19.92 g

Answer from: Quest

i think it is d. e because the next one is igneous.

Which letter in the rock cycle diagram represents sedimentary rock? a) a. b) b. c) d. d) e.

Answer from: Quest

1.consider the following balanced equation and answer parts a through. show calculations for each part.

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.

explanation:

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Hydrogen iodide, hi, is formed in an equilibrium reaction when gaseous hydrogen and iodine gas are h...

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