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Blizzard [7]
4 years ago
6

Copper is used for electrical wirin g and cooking pans however iron is much more common on earth than copper why might copper be

used instead of iron if iron is easier to maintain
Chemistry
1 answer:
pishuonlain [190]4 years ago
8 0
Because copper has a higher electrical and thermal conductivity than iron and is not susceptible to oxidation as easily.
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The molar mass of CO2 is 44.01 g/mol. Which is the mass of 3.21×1025 molecules of CO2
sineoko [7]

Given:

Molar mass of CO2 = 44.01g/mol

3.21x10^25 molecules of CO2

Required:

Mass of CO2

Solution:

Avogadro’s number states that for every mole of atom, there are 6.023x10^23 units of atom. The units may be formula units, atoms. In here, you need to divide 3.21x10^25 molecules of CO2 to 6.023x10^23 molecules per mole.

 

3.21x10^25 molecules of CO2 / 6.023x10^23 molecules per mole = 53.30 moles CO2

53.30 moles CO2 (44.01g/mol CO2) = 2346 g of CO2

7 0
4 years ago
When was the periodic table of elements first published?
Travka [436]
I think this answer is D or C
4 0
3 years ago
I need help with this can someone please help me
Anna [14]
Sure, how can I help?
8 0
3 years ago
A chemist makes up a solution by dissolving 42.0 g of Mg(NO3)2 in enough water to produce a final solution volume of 259 mL. To
Igoryamba

Answer:

The molar mass of Mg(NO₃)₂, 148.3 g/mol.

Explanation:

Step 1: Given data

  • Mass of Mg(NO₃)₂ (solute): 42.0 g
  • Volume of solution: 259 mL = 0.259 L

Step 2: Calculate the moles of solute

To calculate the moles of solute, we need to know the molar mass of Mg(NO₃)₂, 148.3 g/mol.

42.0 g × 1 mol/148.3 g = 0.283 mol

Step 3: Calculate the molarity of the solution

M = moles of solute / liters of solution

M = 0.283 mol / 0.259 L

M = 1.09 M

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All are true for the isomerase reaction of glucose-6-phosphate to fructose-6-phosphate except:
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B it is an aldose to ketose isomerization
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