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Svetradugi [14.3K]
4 years ago
6

If you found a piece of iron on the ground and it was determined that it came from outer space, what would you have found?

Chemistry
2 answers:
schepotkina [342]4 years ago
7 0
Meteorite..because there is iron content
netineya [11]4 years ago
5 0
You have likely found B. a meteorite. Hope this helps!
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What are the general properties of the elements in the first two groups on the right side of the modern periodic table?
telo118 [61]
They have free electron(s) on their outermost energy levels making them good conductors.
They have metallic bonds in their chemical structure.
They readily lose the electrons on their outermost energy levels, to bond with non-metals in ionic bonds to form chemical compounds called "salts"
7 0
3 years ago
PLEASE HELP :"( DUE NOW!!
Citrus2011 [14]

Answer:

The correct answer is  

[CH4][H2O]/[CO][H2]3

Option 3 is correct

Explanation:

Step 1: Data given

For the equation aA + bB ⇆ cC + dD

The equilibrium constant is [C]^c * [D]^d / [A]^a*[B]^b

Step 2: Calculate the equilibrium constant Kc

CO+3H2⇌CH4+H2O

Kc = [H2O][CH4] / [CO][H2]³

The correct answer is  

[CH4][H2O]/[CO][H2]3

Option 3 is correct

5 0
4 years ago
The combustion of 44.45 grams of a hydrocarbon gas mixture releases 2,649 kJ of heat. How much energy, in kWh, will the combusti
Naddika [18.5K]

Explanation:

It is given that 44.45 g of hydrocarbon gas produces 2649 kJ or 2649 \times 10^{3} J of heat.

Also here, 1 lb = 453.592 g.

Therefore, amount of energy released by 453.592 g of hydrocarbon gas will be calculated as follows.

              \frac{2649 \times 10^{3} J \times 453.592 g}{44.45 g}

             = 27.03 \times 10^{6} J

It is known that 1 J = 2.778 \times 10^{-7} Kwh.

Hence, 27.03 \times 10^{6} J = 27.03 \times 10^{6} J \times 2.778 \times 10^{-7} Kwh/J

                              = 7.508 Kwh

Thus, we can conclude that the combustion of exactly one pound of this hydrocarbon gas produce 7.508 Kwh energy.

3 0
3 years ago
Which model of election configuration is the most accurate? The quantum mechanical atomic model The Rutherford atomic model The
Natasha_Volkova [10]

Answer:

Quantum mechanical atomic model.

Explanation:

The first model of electronic configuration was given by Bohr's model.

The most accurate model of electronic configuration is the quantum mechanical atomic model.

Bohr's model has various limitations:

1. It does not explain the Zeeman effect and stark effect.

2. It is not valid for multi-electron system.

3. Heisenberg uncertainty principle is not followed by this model

The quantum mechanical atomic model explains all the four quantum numbers for the electronic configuration of an atom in the periodic table.

The quantum mechanical atomic model considered the Heisenberg uncertainty principle.

7 0
4 years ago
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How are ocean waves formed? gravity energy transfer conduction radiation​
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I think is energy passing and if its not im so sorry :(((
8 0
3 years ago
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