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nlexa [21]
3 years ago
12

I’m sorry I’m confused can you help me?

Chemistry
1 answer:
Amanda [17]3 years ago
5 0

Answer:

2 electrons

Explanation:

The first principal energy level contains only an s sublevel; therefore, it can hold a maximum of two electrons.

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Substance
ipn [44]

Answer:

lithium 3

Explanation:

This is because lithium has three protons

6 0
3 years ago
Comets orbit in short, circular paths around the sun.<br><br> Is this true or false..? Thank you!
Luba_88 [7]
The answer to your question is true.
7 0
3 years ago
Read 2 more answers
How many moles of a gas sample are in a 10.0 L container at 373 K and 203 kPa? the gas constant is 8.31 L -kPa/ mol-K.
Zepler [3.9K]
I believe the answer is 0.33
5 0
3 years ago
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What do you understand by valency electron and valency shell?​
jasenka [17]

Answer:

<h2>total no. of electron present in Valency shell is called valency electron </h2><h2>___________________</h2>

<h2>valency shell is that in which last electron is present</h2>

7 0
3 years ago
A volume of 125 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If
VMariaS [17]

Answer:

41.9 g

Explanation:

We can calculate the heat released by the water and the heat absorbed by the steel rod using the following expression.

Q = c × m × ΔT

where,

c: specific heat capacity

m: mass

ΔT: change in temperature

If we consider the density of water is 1.00 g/mol, the mass of water is 125 g.

According to the law of conservation of energy, the sum of the heat released by the water (Qw) and the heat absorbed by the steel (Qs) is zero.

Qw + Qs = 0

Qw = -Qs

cw × mw × ΔTw = -cs × ms × ΔTs

(4.18 J/g.°C) × 125 g × (21.30°C-22.00°C) = -(0.452J/g.°C) × ms × (21.30°C-2.00°C)

ms = 41.9 g

3 0
3 years ago
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