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dusya [7]
2 years ago
10

Based on the atoms which ones would be in the same period?

Chemistry
2 answers:
statuscvo [17]2 years ago
4 0

Answer:

3&4 i belive if im wrong sorry im not very good at this i just know basic physics (im not sure if thats physics tho)

Explanation:

Neko [114]2 years ago
3 0

Vas happenin!


Atom 1= 6 valence electrons

Atom 2= 3 valence electrons

Atom 3= 8 valence electrons

Atom 4= 6 valence electrons



I would say atom 3


Hope this helps

-Zayn Malik
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If 4000 g of Fe2O3 reacts, how many moles of CO are needed?<br> (add work)
7nadin3 [17]

Answer:

75.15 mol.

Explanation:

  • Firstly, we need to write the balanced equation of the reaction:

<em>Fe₂O₃ + 3CO → 2Fe + 3CO₂.</em>

It is clear that 1.0 mole of Fe₂O₃ reacts with 3.0 moles of CO to produce 2.0 moles of Fe and 3.0 moles of CO₂.

∴ Fe₂O₃ reacts with CO with (1: 3) molar ratio.

  • we need to calculate the no. of moles of (4000 g) of Fe₂O₃:

<em>no. of moles of Fe₂O₃ = mass/molar mass</em> = (4000 g)/(159.69 g/mol) = <em>25.05 mol.</em>

<u>Using cross multiplication:</u>

1.0 mole of Fe₂O₃ needs → 3.0 moles of CO,

∴ 25.05 mole of Fe₂O₃ needs → ??? moles of CO.

<em>∴ The no. of moles of CO needed</em> = (3.0 mol)(25.05 mol)/(1.0 mol) =<em> 75.15 mol.</em>

5 0
3 years ago
10) an object has mass of 50g 500mg and 0.1g. express the total mass of the object in grams
Pavel [41]
500 mg in g :

1 g ----------- 1000 mg
? -------------- 500 mg

500 x 1 / 1000 => 0.5 g

total mass:

50 g + 0.5 g + 0.1 g => 50.6 g

hope this helps!
8 0
3 years ago
What is not true about most combustion reactions? a) elemental carbon is a product b) energy is released c) a carbon-based fuel
White raven [17]

It would be A bc carbon is NOT usually a product. You can find out more about the by searching combustion reactions, then u should be able to answer the questions on your own.

8 0
3 years ago
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What is the mass of 4.38 x 10^24 formula units of sodium chloride (NaCl)?
lana66690 [7]

Answer:

Mass = 427.05 g

Explanation:

Given data:

Formula units of sodium chloride = 4.38 ×10²⁴

Mass of NaCl = ?

Solution:

One mole contain formula units = 6.022 ×10²³

4.38×10²⁴ formula units × 1mol /6.022 ×10²³ formula units

0.73 ×10¹ mol

7.3 mol

Mass of NaCl:

Mass = number of moles × molar mass

Mass = 7.3 mol × 58.5 g/mol

Mass = 427.05 g

5 0
3 years ago
In designing the experiment, the researchers used which type of 32p labeled atp?.
lilavasa [31]

In designing the experiment, the researchers used Y32P-ATP.

<h3>What is ATP?</h3>

Adenosine triphosphate (ATP) is an organic substance and a hydro-trope that provides energy for a variety of functions in

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Researchers used Y32P-ATP Because the Y-phosphate of ATP is used for phosphoryl transfer by kinases. As a result, Y32P-ATP is required for the experiment.

Hence the used ATP is Y32P-ATP.

To know more about ATP, visit the below link:

brainly.com/question/893601

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3 0
2 years ago
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