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Karolina [17]
3 years ago
11

The __________ system is made up of the nose, pharynx, trachea, lungs, bronchi, and alveoli. *

Chemistry
2 answers:
BartSMP [9]3 years ago
7 0
Answer:

The respiratory system is made up of nose, pharynx, trachea, lungs, bronchi, and alveoli
Reil [10]3 years ago
4 0
Respiratory system is made of that
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Balanced equation for the combination of magnesium and oxygen to form magnesium oxide
Digiron [165]

2Mg(s) + O2(g) --> 2MgO(s)

8 0
3 years ago
Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. Assuming that phosphorus is following
Nadya [2.5K]

Answer:

Two electrons each!

Explanation:

The question pretty much requires us to find the oxidation number of Zinc in the compound.

Zn3P2

Following oxidation number rules;

O.N of Zn3P2 = 0

.Since phosphorus has valence of 5, it needs three more electrons to achieve its octet state. Hence;

Oxidation number of P = -3

Let oxidation number of Zn = x

We have;

3x  +  2 (-3) = 0

3x + (-6) = 0

3x = 6

x = 6/3 = 2

This means each zn electrons lost 2 electrons.

4 0
3 years ago
Which statement best describes an example of selective breeding?
svlad2 [7]

Answer:

D, the others are either genetic modification or no selection

Explanation:

3 0
3 years ago
If a reaction produces 1.506 kJ of heat, which is trapped in 30.0 g of water initially at 26.5 C on a clorimetr liake hat in Fig
Dvinal [7]

<u>Answer:</u> The final temperature of water is 38.5°C

<u>Explanation:</u>

To calculate the amount of heat released or absorbed, we use the equation:

q=mc\Delta T

where,

q = heat absorbed = 1.506 kJ = 1506 J   (Conversion factor: 1 kJ = 1000 J)

m = mass of water = 30 g

c = specific heat capacity of water = 4.184 Jl/g.°C

\Delta T = change in temperature = T_2-T_1=T_2-26.5^oC

Putting values in above equation, we get:

1506J=30g\times 4.184J/g.^oC\times (T_2-26.5^oC)\\\\T_2=38.5^oC

Hence, the final temperature of water is 38.5°C

4 0
4 years ago
What would cause the different liquids to have different density
Vedmedyk [2.9K]
The amount of density in the liquids
3 0
3 years ago
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