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denpristay [2]
2 years ago
14

Why are we called carbon based life forms?

Chemistry
1 answer:
RoseWind [281]2 years ago
3 0
Because carbon is part of the element structure we are made of and other elements that we are made of are sulfur and nitrogen
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What geometric shape is the carbon dioxide molecule? The Lewis structure for CO2 contains two double bonds.
adelina 88 [10]
Answer: Linear

Explaination: The central atom of a carbon dioxide molecule is carbon. Carbon is tetravalent which just means it has 4 valence electrons. Because the valence shell isn’t full, the carbon atom can bond with other atoms creating a total of 4 bonds. This then allows the carbon to double bond with 2 oxygen atoms. Now, the atoms in the CO2 molecule Don’t share the electrons evenly because of atomic number or proton count. Because oxygen has an atomic number of 6, carbon has an atomic number of 4, and opposites attract (referring to the positivity of the nucleus and the negativity of the shared electrons), the oxygen atoms will have a slightly negative charge (-) and the oxygen will have a slightly positive charge (+ ). Therefore, the slightly negative oxygen atoms repel creating that linear shape.

7 0
3 years ago
Which body system includes the lungs?m​
Zanzabum

Answer: <u>The respiratory system </u>

Explanation: It includes the nose, mouth, throat, voice box, windpipe, and lungs. Air enters the respiratory system through the nose or the mouth.

4 0
3 years ago
An aluminum cylinder has a radius of 3.2 cm and a length of 8.6 cm. What is the mass of the aluminum cylinder if aluminum has a
Hatshy [7]

Answer:

750g of Aluminum

Assuming 8.6 cm lenth is the height of the cylinder. The volume of a cylinder is: V = \pi*r^2*h

V = 3.14cm x 10.24cm x 3.6cm

V = 280cm^3

Now density = mass/volume

2.7g/cm^3 = mass/280cm^3

2.7g/cm^3 x 280cm^3 = mass/<u>280cm^3</u> x <u>280cm^3</u>

= 750g of Aluminum

5 0
2 years ago
Write the ions present in a solution of k3po4. express your answers as chemical formulas separated by a comma. offset subscripts
olga55 [171]
K₃PO₄ → 3K⁺ + PO₄³⁻

PO₄³⁻ + H₂O ⇄ HPO₄²⁻ + OH⁻

HPO₄²⁻ + H₂O ⇄ H₂PO₄⁻ + OH⁻

H₂PO₄⁻ + H₂O ⇄ H₃PO₄ + OH⁻

K⁺, PO₄³⁻, HPO₄²⁻, H₂PO₄⁻, OH⁻
5 0
3 years ago
Which of the following soils is the most porous? Soil A - flat, sorted particles. Soil B - round, sorted particles Soil C - roun
Ksju [112]

Answer: Option (b) is the correct answer.

Explanation:

Porosity means the ease with which a fluid can pass through between a rock or cracks etc.

If particles of a soil are flat and even if they are sorted then there will rarely be any space available for fluid or water to pass through it.

If soil particles are round in shape and are sorted then there will be space available for the fluid to pass through it. Hence, this type of soil will be most porous.

Similarly, if soil particles are round but are unsorted then there will be less space available as compared to sorted particles. This is because particles are placed randomly so, somewhere there will be much less space and somewhere there will be large space available. As a result, soil will not be most porous.

If soil particles are flat and unsorted then there will also be less space available for the fluid to pass through it. Thus, soil will be less porous.

Hence, we can conclude that out of the given options, soil B - round, sorted particles is the most porous.

4 0
3 years ago
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