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Marat540 [252]
2 years ago
11

A nearly complete skeleton, ____ is a classic example of a Neanderthal with many defining Neanderthal characteristics. Group of

answer choices Taung Child La Ferrassie 1 Piltdown Man KNM-ER 1805
Chemistry
1 answer:
Ostrovityanka [42]2 years ago
4 0

Answer:  La Ferrassie 1

Explanation: La Ferrassie 1, often referred to as LF1, is a male Neanderthal skeleton estimated to be 70–50,000 years old. It was discovered at the La Ferrassie site in France by Louis Capitan and Denis Peyrony in 1909. The skull is the most complete Neanderthal skull ever found.

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The specific heat capacity of lead is 0.13 J/g-K. How much heat (in J) is required to raise the temperature of 15 g of lead from
Alona [7]

Answer:

c. 29 J

Explanation:

Step 1: Given data

  • Specific heat capacity of Pb (c): 0.13 J/g.K (= 0.13 J/g.°C)
  • Mass of Pb (m): 15 g
  • Initial temperature: 22 °C
  • Final temperature: 37 °C

Step 2: Calculate the temperature change

ΔT = 37 °C - 22 °C = 15 °C

Step 3: Calculate the heat (Q) required to raise the temperature of the lead piece

We will use the following expression.

Q = c × m × ΔT

Q = 0.13 J/g.°C × 15 g × 15 °C = 29 J

6 0
3 years ago
Why is the equation 4Al+302>2Al203 balanced
cestrela7 [59]

Answer:

It's coefficient to the front of each element that requires it.

Explanation:

It is coefficient to the front of each element or compound that requires it. Essentially you are multiplying the amount of atoms or compounds on one side to match the amount on the other side.

8 0
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Which of the following observations indicates that an atom has neutrons?
olganol [36]

Answer:

The correct answer is C: A radiation consisting of uncharged particles is emitted when alpha particles strike beryllium atoms.

Explanation:

Chadwick discovered neutron while experimenting with a gold foil. A stream of alpha particles produced from a polonium source was directed at beryllium target. It was noticed that some penetrating radiations were produced. These uncharged particles were called neutrons because on the charge detector these particles showed no deflection.

Their nuclear reaction is as follow.

                             ₂He + ₄Be ----------> ₀n + ₆C

Chadwick noticed that neutrons cannot ionize gases and are highly penetrating particles.

8 0
4 years ago
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C. MnO₄ + 4C₂H₂O₄  → Mn + 8CO₂ + 4H₂O
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romanna [79]

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Saturn

Explanation:

One whole orbit is a year on earth. Well it takes Saturn 10,759 days to make one whole orbit. It takes Jupiter 4,333 days to make a whole orbit.

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