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weqwewe [10]
3 years ago
12

This drug is often prescribed by psychiatrists and family practice physicians for patients who can't fall asleep. A. Halcion B.

Motrin C. Cafergot D. Codeine
Chemistry
1 answer:
nika2105 [10]3 years ago
5 0
B I tjinksjwkzosmznqosnsnw
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Write an equation that shows the formation of a lithium ion from a neutral lithium atom
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Li + e- ===> Li+
it looses its valence electron to form a uni-positive ion
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12. The most common factors that cause chemical reactions to occur are all the following except
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Transfer of electrons
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If 100 g of a substance reacts with 70 g of another substance, what will be the mass of the products after the reaction?
RideAnS [48]

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x=170

The question is asking you to add them together to get your unknown number

7 0
3 years ago
Explain why the following chemical equation represents a Lewis acid-base reaction. H+ + NH3 —>NH4+
lozanna [386]

Answer:

Due to an electron-pair acceptor and donor.

Explanations:

<em><u>Lewis acid</u></em> can be defined as an electron-pair acceptor. An example is Hydrogen ion(H+). This is because it is a proton and it distributes positive charge which means that it accepts electrons(negative charge).

<em><u>Lewis base</u></em> can be defined as an electron-pair donor. This is because it donates electrons to be accepted by the proton. An example is ammonia(NH3).

7 0
3 years ago
Ammonia (NH3) clouds are present around some planets. Calculate the number of grams of ammonia produced by the reaction of 5.4 g
Komok [63]

Answer:

30.4 g. NH3

Explanation:

This problem tells us that the hydrogen (H2) is the limiting reactant, as there is "an excess of nitrogen." Using stoichiometry (the relationship between the various species of the equation), we can see that for every 3 moles of H2 consumed, 2 moles of NH3 are produced.

But before we can use that relationship to find the number of grams of ammonia produced, we need to convert the given grams of hydrogen into moles:

5.4 g x [1 mol H2/(1.008x2 g.)] = 2.67857 mol H2 (not using significant figures yet; want to be as accurate as possible)

Now, we can use the relationship between H2 and NH3.

2.67857 mol H2 x (2 mol NH3/3 mol H2) = 1.7857 mol NH3

Now, we have the number of moles of ammonia produced, but the answer asks us for grams. Use the molar mass of ammonia to convert.

1.7857 mol NH3 x 17.034 g. NH3/mol NH3 = 30.4 g. NH3 (used a default # of 3 sig figs)

5 0
2 years ago
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