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lianna [129]
3 years ago
5

How many valence electrons are in Tr2-

Chemistry
2 answers:
myrzilka [38]3 years ago
8 0

Answer:

4 valence electrons

Explanation:

Vikki [24]3 years ago
7 0
Tellurium belongs to the group 6 which is also the group of oxygen which has 6 valence electrons.
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Seaborg co-discovered 10 new elements and they were moved out of the main group to the
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Other group because they weren’t in the right group
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3 years ago
Calculate the energy required to heat 566.0mg of graphite from 5.2°C to 23.2°C. Assume the specific heat capacity of graphite un
maw [93]

Answer:

7.23 J

Explanation:

Step 1: Given data

  • Mass of graphite (m): 566.0 mg
  • Initial temperature: 5.2 °C
  • Final temperature: 23.2 °C
  • Specific heat capacity of graphite (c): 0.710J·g⁻¹K⁻¹

Step 2: Calculate the energy required (Q)

We will use the following expression.

Q = c × m × ΔT

Q = 0.710J·g⁻¹K⁻¹ × 0.5660 g × (23.2°C-5.2°C)

Q = 7.23 J

6 0
3 years ago
What object is being acted on by balanced forces?
tamaranim1 [39]

Answer: D . A car that moves at a constant speed in one direction.

Explanation: D is the answer because a car moving in a constant speed represents a balance force because the speed is constant and the forces are balanced or , when a car travels at a constant speed, the driving force from the engine is balanced by resistive forces such as air resistance and friction in the car's moving parts.

4 0
3 years ago
Calculate the number atoms in a 92.8 mg of Si
Step2247 [10]

Answer: the answer is that stop using brainly for your answer dumb kid

Explanation:

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8 0
4 years ago
How to get the density of this unknown liquid?
scoray [572]

Answer:

Measure the volume of water poured into a graduated cylinder, then place the object in the water and remeasure the volume. The difference between the two volume measurements is the volume of the object. Now simply divide the mass by the volume to calculate the density of the object.

3 0
3 years ago
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