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arlik [135]
3 years ago
7

The larger the hole in the ozone layer gets,

Chemistry
1 answer:
seraphim [82]3 years ago
4 0
 The more UV rays reach the earth

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Why does pressure build up around the plates?
Ira Lisetskai [31]

Answer: The correct answer is

Earthquakes occur along fault lines, cracks in Earth's crust where tectonic plates meet. They occur where plates are subducting, spreading, slipping, or colliding. As the plates grind together, they get stuck and pressure builds up. Finally, the pressure between the plates is so great that they break loose.

Explanation: Mark me brain give 5 stars and a thank you

4 0
3 years ago
If the spheres represent a potassium atom and a potassium ion, which best represents the ion?
saul85 [17]
If the potassium ions were represented by spheres, the smaller one is the ion and the bigger one is the (neutral) atom.

Generally, metallic atoms (such as potassium) readily form cations (positively-charged ions) by losing electrons in their outer shells. By losing these electrons, the atoms are expected to be smaller in size. However for nonmetals, they readily gain electrons to form anions (negatively-charged ions). By gaining these electrons in their outer orbital shells, the ions generally then becomes larger. 
3 0
3 years ago
2 NH3 + 3 CuO --> 3 Cu + N2 + 3 H2O
Gnom [1K]

<u>Answer:</u> 0.5 moles of N_2 are produced in the reaction

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

Given mass of CuO = 113.6 g

Molar mass of CuO = 79.5 g/mol

Plugging values in equation 1:

\text{Moles of CuO}=\frac{113.6g}{79.5g/mol}=1.43 mol

For the given chemical reaction:

2NH_3+3CuO\rightarrow 3Cu+N_2+3H_2O

By the stoichiometry of the reaction:

If 3 moles of CuO produces 1 mole of N_2

So, 1.43 moles of CuO will produce = \frac{1}{3}\times 1.43=0.476=0.5mol of N_2

Hence, 0.5 moles of N_2 are produced in the reaction

5 0
3 years ago
2.2 liters at 20 degrees Celsius if the pressure doesn’t change what is the new temperature at 2.6 liters
Mamont248 [21]
Based on the question, it is evident that this question rests on the premise of Charle's Law, which essentially states that temperature is proportional to volume once pressure and mass remain constant.

Thus by Charle's Equation:   \frac{ V_{1} }{ T_{1} }  =  \frac{ V_{2} }{ T_{2} }

Since the initial volume = 2.2 L; the initial temperature = 20 C; and the final volume = 2.6 L,
                           then V₁ = 2.2 L; T₁ = 20 C; V₂ = 2.6 L and what we would be
                           finding is T₂ (the final/new temperature)

Now,   T_{2}  =  \frac{(V_{2})   (T_{1}) }{V_{1}} 

     ⇒   T_{2}  =  \frac{(2.6 L)   (20  ^{o} C) }{2.2 L}

     ⇒   T_{2} = 23.64   ^{o}C


        ∴  the new temperature is ≈  23.6 °C
7 0
3 years ago
b. Describe how the temperature changes within a phase and during a phase change as heat is added to a water sample. (2 points)
Rudik [331]
Hello!

Take for example the heating of water.

When heating liquid water from room temperature (25 °C) to the boiling point (100 °C), adding heat results in a direct increase in the temperature. This kind of heat is called sensible heat, because we can sense the effect of the added energy.

But when you reach 100 °C, there is a phase change from liquid to vapour, and the added heat is used to produce the phase change, and no increase in temperature is observed, only the phase change. This kind of heat is called latent heat. 

Have a nice day!

6 0
3 years ago
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