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2 years ago

Please help!!! due soon!

Chemistry

1 answer:

Veseljchak [2.6K]2 years ago

7 0

Answer:

Always stays the same.

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Nitrogen and hydrogen combine at a high temperature, in the presence of a catalyst, to produce ammonia. N 2 ( g ) + 3 H 2 ( g )

Kisachek [45]

Answer:

After complete reaction, 0.280 moles of ammonia are produced

Explanation:

Step 1: Data given

Number of moles N2 = 0.140 moles

Number of moles H2 = 0.434 moles

Step 2: The balanced equation

N2(g) + 3H2 (g) ⟶ 2NH3 (g)

Step 3: Calculate the limiting reactant

For 1 mol N2 we need 3 moles H2 to produce 2 moles NH3

N2 is the limiting reactant. It will completely be consumed (0.140 moles).

H2 is in excess. There will react 3*0.140 = 0.420 moles

There will remain 0.434 - 0.420 = 0.014 moles

Step 4: Calculate moles NH3

For 0.140 moles N2 we'll have 2*0.140 = 0.280 moles NH3

After complete reaction, 0.280 moles of ammonia are produced

5 0

2 years ago

When sedimentary rock sits for years and years will it build up more layers and. Make fossils

KengaRu [80]

Sedimentary rocks don't necessarily make fossils. Although when animals die on top of the rocks and are never moved, blown away, etc they can get trapped under the growing rock. Which is why fossils are often found in sedimentary rocks.

6 0

3 years ago

Which material has a density most similar to the density of water?

konstantin123 [22]

Answer:

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8 0

2 years ago

The pKb value for aqueous ammonia at 25

Alex17521 [72]

The value of pka for $NH_3$ in an aqueous solution is 9.2.

Kb denotes the base dissociation constant.

pKa + pKb =14 at 25 degree celcius.

pKa + 4.8 =14

pKa = 9.2

pKb is the negative base-10 logarithm of the base dissociation constant (Kb) of a solution.

It is used to determine the strength of a base or alkaline solution.

The value of pka for $NH_3$ in an aqueous solution is 9.2.

Learn more about pka here:

brainly.com/question/14124805

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8 0

1 year ago

how many grams og gas must be relased from a 45.2 L sample of N2 at STP to reduce the volume to 45.0 L at stop

patriot [66]

Answer:54,6

Explanation:

6 0

2 years ago

Read 2 more answers