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Klio2033 [76]
3 years ago
10

Hi everyone! :)) How is your day going, let me know!

Chemistry
2 answers:
Masja [62]3 years ago
8 0

Answer:

its doing great!

Explanation:

breainleist plss

Shkiper50 [21]3 years ago
4 0
Vas happenin!!


My day is going okay kinda tired how is your day?
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TILEF
torisob [31]

Answer:

Na

Explanation:

sodium has mass number 23 and atomic number 11 so number of protons =number of electrons =atomic number which is 11 and number of neutrons=mass number-number of protons =23-11=12

7 0
3 years ago
A solution is made by dissolving 58.125 g of sample of an unknown, nonelectrolyte compound in water. The mass of the solution is
e-lub [12.9K]

Answer:

molecular weight (Mb) = 0.42 g/mol

Explanation:

mass sample (solute) (wb) = 58.125 g

mass sln = 750.0 g = mass solute + mass solvent

∴ solute (b) unknown nonelectrolyte compound

∴ solvent (a): water

⇒ mb = mol solute/Kg solvent (nb/wa)

boiling point:

  • ΔT = K*mb = 100.220°C ≅ 373.22 K

∴ K water = 1.86 K.Kg/mol

⇒ Mb = ? (molecular weight) (wb/nb)

⇒ mb = ΔT / K

⇒ mb = (373.22 K) / (1.86 K.Kg/mol)

⇒ mb = 200.656 mol/Kg

∴ mass solvent = 750.0 g - 58.125 g = 691.875 g = 0.692 Kg

moles solute:

⇒ nb = (200.656 mol/Kg)*(0.692 Kg) = 138.83 mol solute

molecular weight:

⇒ Mb = (58.125 g)/(138.83 mol) = 0.42 g/mol

8 0
3 years ago
What element is being reduced in the redox reaction? H2O2+ ClO2- > ClO- + O2
slava [35]

Answer:

Cl

Explanation:

Because the oxidation state reduces from+3 in ClO2- to +1 in ClO- and oxygen is being lost

6 0
3 years ago
Why does an incomplete combustion reaction occur?​
Natasha_Volkova [10]
Incomplete combustion occurs when the supply of air or oxygen is poor. Water is still produced, but carbon monoxide and carbon are produced instead of carbon dioxide. ... Carbon monoxide is a poisonous gas, which is one reason why complete combustion is preferred to incomplete combustion.
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3 years ago
Identify two physical properties and two chemical properties of a bag of microwave popcorn before popping and after
krek1111 [17]
Physical properties of a bag of microwaveable popcorn are the mass of it, the color of it, the size of it, and the weight of it. Two chemical properties of a bag of microwavable popcorn are it changed from seeds to popcorn and it popped.
4 0
3 years ago
Read 2 more answers
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