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natulia [17]
3 years ago
7

Describe one technology used to travel to space and one technology used to return from space

Chemistry
1 answer:
marysya [2.9K]3 years ago
8 0
<span>technology includes spacecraft, satellites, space stations, and support infrastructure, equipment, etc..</span>
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The following balanced equation shows the decomposition of ammonia (NH3) into nitrogen (N2) and hydrogen (H2). 2NH3 → N2 + 3H2 A
Triss [41]
The decomposition of ammonia is characterized by the following decomposition equation:
                                  2NH₃<span>   →   N</span>₂  <span> +   3H</span>₂   

The mole ratio of N₂  :  H₂  is  1  :  3

    If the number of moles of N₂  =  0.0351 mol
    Then the number of moles of H₂  =  0.0351 mol  × 3
                                                         = 0.1053 mol

The number of moles of hydrogen gas produced when 0.0351 mol of Nitrogen gas is produced after the decomposition of Ammonia is  0.105 mol (OPTION 3).

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3 years ago
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Create a time that marks important events during the Precambrian Supereon.
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3 years ago
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If an atom has 13 electrons how many electron shells does it have
svlad2 [7]

Answer:

Explanation:

If an atom has 13 electrons then it belongs to p-block of periodic table.

s level can accommodate 2 electrons.

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13 means 1s2 2s2 2p6 3s2 3p1.

As you can see there totally 5 sub-shells.

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4 0
2 years ago
when 6.25 grams of pure iron are allowed to react with oxygen , a black oxide forms. if the product weighs 8.15 g, what is the e
erik [133]
We are given with the mass of  pure iron that reacts with oxygen to form an oxide which has a given mass as well. the mass of oxygen reacted is 8.15-6.25 g or 1.9 grams. THen we convert the mass of the reactants to moles. Iron is equal to 0.1119 moles and oxygen is equal to 0.1188. We divide each number to the less amount. Hence iron is 1 and oxygen is approx 1. The empirical formula hence is FeO or ferrous oxide or Iron (II) oxide.
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Method that used to separate kerosine and water?
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You can use a separating funnel. The person will go the top and the water to the bottom.
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