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3 years ago

7

Why does ice float on water?

2 answers:

Anni [7]3 years ago

5 0

Ice is less dese than water

wolverine [178]3 years ago

5 0

Because of its density compared to the water’s.

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A carbon atom is able to form four single covalent bonds because it

kati45 [8]

<span>has four valence electrons in its outermost energy level.
An organic compound in which a carbonyl group is bonded to two different carbon atoms is a(n) ketone.
All of the following release carbon into the atmosphere except the
sedimentation of dead organisms.</span>

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3 years ago

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In each row, check the box under the compound that can reasonably be expected to be more acidic in aqueous solution, e.g. have t

Afina-wow [57]

Best guess
Answer: b

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3 years ago

I'm trying to do question number 2.56

Lunna [17]

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3 years ago

C is the element symbol for which element?<br>a. Carbon<br>b. Cadmium<br>c. Celenium<br>d. Chlorine

storchak [24]

Answer:

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Explanation:

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3 years ago

Ammonia is produced from the reaction of nitrogen and hydrogen according to the following balanced equation: N2 1 g 2 1 3H2 1 g

bekas [8.4K]

Answer:

Mass of NH3 produced = 1217 g or 1.217*10^3 g

Explanation:

<u>Given:</u>

Mass of N2 = 1.003*10^3 g

Mass of H2 = 5.003*10^2 g

<u>To determine:</u>

Maximum mass of NH3 that can be produced when the given amounts of N2 and H2 combine

<u>Calculation:</u>

The chemical reaction corresponding to the production of ammonia is:

$N2(g)+3H2(g)\rightarrow 2NH3(g)$

Based on the reaction stoichiometry:

1 mole of N2 combines with 3 moles of H2 to form 2 moles of NH3

$moles\ of\ N2 = \frac{Mass\ N2}{Molar\ mass N2} = \frac{1.003*10^{3}g }{28g/mol} =35.8\ moles$

$moles\ of\ H2 = \frac{Mass\ H2}{Molar\ mass H2} = \frac{5.003*10^{2}g }{2g/mol} =250\ moles$

Since the moles of N2 is less than that of H2, the limiting reagent will be N2 which would in turn determine the amount of NH3 formed.

Based on the reaction stoichiometry the N2 : NH3 ratio = 1:2

Therefore,

$moles\ of\ NH3\ produced = 2*35.8 = 71.6\ moles\\\\Mass\ of\ NH3\ produced = moles*molar mass = 71.6\ moles*17\ g/mol = 1217 g$

8 0

3 years ago