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soldi70 [24.7K]
3 years ago
12

Please help if you can !

Chemistry
2 answers:
iogann1982 [59]3 years ago
8 0

Answer:

7630

Explanation:

8090 [49]3 years ago
6 0

eAnswer:

Explanation:

Math

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What is the empirical formula of a carbon-oxygen compound, given that a 95.2 g sample of the compound contains 40.8 g of carbon
algol [13]

Answer:

95.2 - 40.8 = 54.4 g of oxygen

number of moles = mass (g)/ Mr

no. of moles of carbon = 40.8/12 = 3.4

no. of moles of oxygen = 3.4

divide both by smallest value which is 3.4 and you’ll get 1 mole of carbon and 1 mole of oxygen therefore the empirical formula is CO

Explanation:

hope this helps :)

4 0
2 years ago
A same of gas in a rigid container is at 25.0Cand 1.00atm. What is the pressure of the sample when heated to 220.0C
Crazy boy [7]

Answer:

1.654 atm.

Explanation:

  • We can use the general law of ideal gas: <em>PV = nRT.</em>

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R  is the general gas constant,

T is the temperature of the gas in K.

  • If n and V are constant, and have different values of P and T:

<em>(P₁T₂) = (P₂T₁)</em>

<em></em>

  • Knowing that:

P₁ = 1.0 atm, T₁ = 25°C + 273 = 298 K,

P₂ = ??? atm, T₂ = 220°C + 273 = 493 K,

  • Applying in the above equation

<em>(P₁T₂) = (P₂T₁)</em>

<em></em>

<em>∴ P₂ = (P₁T₂)/(T₁) </em>= (1.0 atm)(493 K)/(298 K) = <em>1.654 atm.</em>

7 0
3 years ago
The process by which a semipermeable membrane allows water molecules, small molecules, and ions to pass through while retaining
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The process is know as diffusion in which substances move from higher concentration to lower concentration
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3 years ago
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Vikki [24]
Yes what is this tho like
8 0
2 years ago
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Why do you think the Na+ ion is smaller than a neutral Na atom? Why do you think the Cl - ion is larger than a neutral Cl atom?
Sphinxa [80]

Answer:

Na+ ion is smaller than a neutral Na atom in the ion there was one more proton which will attract electron bring it closer to the center making the atomic radius smaller. Therefore making a Na+ ion is smaller than a neutral Na atom Explanation:

yes

7 0
3 years ago
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