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svetoff [14.1K]
3 years ago
10

ASAP need answer When is a scientific theory formed?

Chemistry
1 answer:
eduard3 years ago
7 0

Answer:when a hypothesis is given a repeated exposure to experimentation and is not falsified it increases the confidence of biologist's on that hypothesis such hypothesis form the basis of formulating further hypothesis which are then experimentally proved.The hypothesis that stand the test of time often tested and never rejected are called theory.A theory can be denied by further observations.

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You conduct an experiment that requires the creation of an ammonia solution. You do this by reacting 50.0 L of nitrogen gas with
ozzi

Answer : The molarity of the resulting ammonia solution is, 0.89 M

Explanation :

The balanced chemical reaction is:

N_2(g)+3H_2(g)\rightarrow 2NH_3(g)

First we have to calculate the moles of nitrogen gas.

As we know that at STP, 1 mole of gas occupies 22.4 L volume of gas.

As, 22.4 L volume of nitrogen gas present in 1 moles of nitrogen gas

So, 50.0 L volume of nitrogen gas present in \frac{50.0}{22.4}=2.23 moles of nitrogen gas

Thus, the moles of nitrogen gas is 2.23 moles.

Now we have to calculate the moles of ammonia gas.

From the reaction, we conclude that

As, 1 mole of N_2 react to give 2 mole of NH_3

So, 2.23 moles of N_2 react to give 2.23\times 2=4.46 moles of NH_3

Now we have to calculate the molarity of the resulting ammonia solution.

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Moles of ammonia}}{\text{Volume of solution (in L)}}

Now put all the given values in this formula, we get:

\text{Molarity}=\frac{4.46mole}{5.0L}

\text{Molarity}=0.89M

Therefore, the molarity of the resulting ammonia solution is, 0.89 M

7 0
3 years ago
Which step is this ?prophase I, Anaphase I, prophase II, Anaphase II
sweet-ann [11.9K]

Answer:

Prophase 1

Explanation:

4 0
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Read 2 more answers
If the mass of a material is 76 grams and the volume of the material is 16 cm3, what would the density of the material be? g/cm3
mafiozo [28]
4.8 g/cm3 with sig figs since it's mass/volume you divide 76 grams by 16 cm3
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starting with 500.4 of glucose, what is the maximum amount of ethanol in grams and i'm liters that can be obtained by this proce
ddd [48]
Hope this helps. Thanks

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3 years ago
Question: The tides are periodic rises and falls of large bodies of water on Earth. Describe the cause of the tides on Earth. Us
jek_recluse [69]

Answer:

because it can... get smarter

Explanation:

5 0
3 years ago
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