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3 years ago

Which element of the scientific process includes the greatest amount of information about living things?

1 answer:

7 0

I would say its hydrogen, as it makes 51% of the cell constituents. This is followed by oxygen, which makes up 24% of the cell, and then carbon which is present as 11% of the total mass. Nitrogen makes up 4% of the cell, followed by other elements like phosphorous.

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Predict whether each of the following ionic compounds is soluble in water: a.) LiCl d.) K2 ____________________ ________________

IrinaVladis [17]

Answer:

See answer below

Explanation:

a.) Lithium Chloride, LiCl is soluble in water.

b.) Silver Chloride, AgCl is insoluble in water.

c.) Barium Carbonate, BaCO3 is insoluble in water.

d.)Potassium, K2 is soluble in water.

e.) Iron (III) Nitrate Fe(NO3)3 is soluble in water.

All nitrates (NO3) are soluble in water.
Alkali metals are soluble in water.
Chlorides are soluble in water with the exception of AgCl and a few others.
Carbonates are generally insoluble in water.

6 0

3 years ago

Iron has a density of 7.86 g/cm^3 (1 cm^3=1 mL). Calculate the volume (in dL) of a piece of iron having a mass of 4.62 kg . Note

s2008m [1.1K]

Density is mass over volume. The density of iron is given in g/cm³

we have to first convert g/cm³ to kg/dL.

1000 g = 1 kg and 100 cm³ = 1 dL

the mass of 1 cm³ = 1 g

the mass of 100 cm³ / 1 dL = 100 g

then mass of 1 dL in kg is = 100 g / 1000 g/kg = 0.1 kg

volume of 0.1 kg is 1 dL

therefore density of iron is 7.86 g/cm³ x 0.1 kg/dL / g/cm³ = 0.786 kg/dL

volume of iron having mass 0.786 kg is 1 dL

then volume of iron having a mass of 4.62 kg is - 1 dL / 0.786 kg x 4.62 kg = dL

volume of iron is 5.88 dL

3 0

3 years ago

When sediment is eroded and then deposited at the mouth of a river, it can form a

wariber [46]

Answer:

fossil?..................

7 0

3 years ago

Why do think sand is called sand?

Anastasy [175]

Because is sand idk ‍♀️

8 0

4 years ago

The electron configuration for carbon is:

seropon [69]

Answer:

$1 {s}^{2} 2 {s}^{2} 2 {p}^{2}$

[He] 2s2 2p2

Explanation:

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Thank you

5 0

2 years ago