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Alborosie
3 years ago
14

WILL MARK BRAINLIEST _________ are the outermost electrons of an atom

Chemistry
2 answers:
Minchanka [31]3 years ago
5 0
Valence shell :) is the outermost electrons of an atom
anastassius [24]3 years ago
3 0

Answer:

valence shell, and the electrons found in it are called valence electrons.

Explanation: i think hope this helps u

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One cup of fresh orange juice contains 139 mg of ascorbic acid (vitamin c, c6h8o6) given that one cup = 264.8 ml calculate the m
SVEN [57.7K]
The answer to this question would be: 3 molar
A molar unit will be equal to moles of solute per 1 liter of solvent. In this question, you are given the volume of the solution (264.8ml) and the weight of the molecule(139mg). Since the unit is moles not mg, then you need to convert the molecule into moles. To do that you need to know the ascorbic acid molecular weight which was: 6*12 + 8*1 + 6 *16 =<span>176mg/moles.

molecule in moles= 139mg/ (176 mg/moles)= 0.79 moles

Then the molarity of the juice should be: 0.79 moles/ (1000ml/264ml)= 2.991 M= 3 M</span>
4 0
4 years ago
Tool<br>what is the function of axe?:)<br>science:)​
Orlov [11]

Answer:

to cut wood?

Explanation:

so wood get smaller

6 0
3 years ago
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What is the scientific notation of 36000x10 ex.10?
Vedmedyk [2.9K]

Answer:

3.6 times 10^4

Explanation:

Scientific notation is between 1-9. So, we move 36000 to 4 decimal places. SO it would be 3.6 times 10^4. Scientific Notation always has the base of 10 . Enjoy :)

5 0
4 years ago
Why do cactuses have roots if they already restore water inside themselfs
Alinara [238K]

Answer:

To stay on the ground, say during a storm, the roots help keep the plant anchored

Explanation: "hope this helps"

7 0
4 years ago
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The thermite reaction, in which powdered aluminum reacts with iron oxide, is highly exothermic: 2Al(s) + F e2O3 (s)→A l2O 3 (s) 
bija089 [108]
For this problem, we use the Hess' Law.

ΔHrxn = ∑(ν*Hf of products) - ∑(ν*Hf of reactants)

The ν represents the corresponding stoichiometric coefficients of the substances, while Hf is the heat of formation. For pure elements, Hf = 0.

Hf of Al₂O₃ = <span>−1676.4 kJ/mol
</span>Hf of Fe₂O₃ = <span>-826.0 kJ/mol

Thus,

</span>ΔHrxn = 1*−1676.4 kJ/mol + 1*-826.0 kJ/mol
<em>ΔHrxn = -2502.4 kJ/mol</em>
4 0
3 years ago
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