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4 years ago

Balance N2 + H2 —NH3 what type of reaction

Chemistry

1 answer:

AnnyKZ [126]4 years ago

5 0

3! You have to ensure balance of all the different elements.

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1- Science that deals with the identification and quantification of the components of material systems

Elis [28]

Answer:

Analytical science

Explanation:

7 0

4 years ago

238,2U --> 234Th +<br> 90

stiv31 [10]

Answer:

$\\_{2}^{4} \alpha$

Explanation:

In this question, we wish to find the missing nuclei for the equation:

$\\_{92}^{238} U\rightarrow _{90}^{234} Th + _{Z}^{A} X$

In order to find the missing species, we need to use the charge and mass balance law. That is, the mass should be conserved: the total mass on the left-hand side with respect to the arrow should be equal to the total mass on the right-hand side with respect to the arrow:

$238 = 234 + A$

Notice from here that:

$A = 238 - 234 = 4$

So far we know that the mass of X is 4. Similarly, we apply the law of charge conservation. The total charge should be conserved:

$92=90+Z$

From here:

$Z = 92-90=2$

We have a particle:

$\\_{2}^{4} X$

Looking at the periodic table, an atom with Z = 2 corresponds to helium. This can also be written as an alpha particle:

$\\_{2}^{4} \alpha$

5 0

3 years ago

Does changing the amplitude affect the period on a pendulum and how

yawa3891 [41]

Answer:

As the amplitude of pendulum motion increases, the period lengthens, because the restoring force −mgsinθ increases more slowly than −mgθ (sinθ≅θ−θ3/3!for small angles).

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3 years ago

The discovery of the sixth quark was accomplished by

marusya05 [52]

Professor of Physics Carlo Rubbia

8 0

4 years ago

What has a positive charge

larisa [96]

Answer:

A proton carries a positive charge and an electron carries a negative charge

Explanation:

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5 0

3 years ago