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inysia [295]
3 years ago
12

Why does the earth have different layers?

Biology
1 answer:
Rudik [331]3 years ago
4 0

Explanation:

because at is formed,the lighter part floats on the surface and the really heavy part (like iron and nickel in the core)sank to the middle

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An example of a physical contaminant is a
Zinaida [17]

Answer:

Common examples of physical contaminants include hair, bandages, fingernails, jewelry, broken glass, metal, paint flakes, bone, the body parts of pests, or pest droppings.

Explanation:

3 0
2 years ago
HELP ASAP I WILL GIVE BRAINLIST
adelina 88 [10]

Answer:

1) CO₂

2) 0.2551 g

Explanation:

The balanced reactions are:

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

MgCO₃ + 2HCl → MgCl₂ + H₂O + CO₂

1) The gas produced is CO₂.

2) Calculate mass of CaCO₃:

(0.5236 g) (0.4230) = 0.2215 g CaCO₃

Convert to moles:

(0.2215 g CaCO₃) (1 mol / 100.1 g) = 0.002213 mol CaCO₃

Find moles of CaCO₃:

(0.002213 mol CaCO₃) (1 mol CO₂ / mol CaCO₃) = 0.002213 mol CO₂

Convert to mass:

(0.002213 mol CO₂) (44.01 g / mol) = 0.09738 g CO₂

Calculate mass of MgCO₃:

(0.5236 g) (0.5770) = 0.3021 g MgCO₃

Convert to moles:

(0.3021 g MgCO₃) (1 mol / 84.31 g) = 0.003583 mol MgCO₃

Find moles of MgCO₃:

(0.003583 mol MgCO₃) (1 mol CO₂ / mol MgCO₃) = 0.003583 mol CO₂

Convert to mass:

(0.003583 mol CO₂) (44.01 g / mol) = 0.1577 g CO₂

Total mass of CO₂:

0.09738 g CO₂ + 0.1577 g CO₂ = 0.2551 g CO₂

8 0
3 years ago
Suppose you relocate a fish from a freshwater ecosystem to a marine ecosystem. What abiotic factor in the marine ecosystem will
RUDIKE [14]

Answer:

Water concentration,Salts concentration will most likely make it hard for the fish to survive.

Explanation:

5 0
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Unicellular organisms would most likely have _____.
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<span>Unicellular organisms would most likely have isogametes.

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Where would a tundra biome be located?
inysia [295]
Canada as it is far from the equator
6 0
3 years ago
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