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Ksenya-84 [330]
3 years ago
15

An atom with an atomic number of 18 will have how many electrons in its innermost orbit

Chemistry
1 answer:
Paraphin [41]3 years ago
6 0

Answer:

2 electrons

Explanation:

The K shell is the innermost orbit and it contains 2 electrons

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The answer is A.

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How far will a car go that is moving at 10 m/s in 1 hour
Airida [17]

Answer:

36,000 miles in one hour.

Explanation:

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Which of the following is true about the coefficients in a balanced chemical equation?
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Where is the chemical equations?

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Atomic size of inert gases do not affect you inertness why​
Tresset [83]

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6 0
2 years ago
A 825 g iron block is heated to 352 degrees C and is placed in an insulated container (of negligible heat capacity) containing 4
Stella [2.4K]

Answer : The final equilibrium temperature of the water and iron is, 537.12 K

Explanation :

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

q_1=-q_2

m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)

where,

c_1 = specific heat of iron =  560 J/(kg.K)

c_1 = specific heat of water = 4186 J/(kg.K)

m_1 = mass of iron = 825 g

m_2 = mass of water = 40 g

T_f = final temperature of water and iron = ?

T_1 = initial temperature of iron = 352^oC=273+352=625K

T_2 = initial temperature of water = 20^oC=273+20=293K

Now put all the given values in the above formula, we get:

(825\times 10^{-3}kg)\times 560J/(kg.K)\times (T_f-625K)=-(40\times 10^{-3}kg)\times 4186J/(kg.K)\times (T_f-293K)

T_f=537.12K

Therefore, the final equilibrium temperature of the water and iron is, 537.12 K

8 0
3 years ago
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