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valentina_108 [34]
2 years ago
12

How many o2 molecules are present in 0.470 of oxygen gas

Chemistry
1 answer:
kolbaska11 [484]2 years ago
7 0

Answer:

<em>The number of molecules in 16 grams of oxygen gas is 3.01*10^23, equal to half of Avogadro's number</em>

Explanation:

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1.00 mole of an ideal monoatomic gas at STP first undergoes isothermal expansion so that the volume at b is 2.5 times the volume
MrRa [10]

Answer:

the pressure at c = 0.27 atm

Explanation:

Given that:

number of moles (n) = 1.0 moles

Value of gamma in the monoatomic gas (γ) = 5/3

During an isothermal expansion, the volume at b is = 2.5 times the volume at a ; this implies that:

V_b = 2.5 V_a

∴ To calculate  the pressure at c from a; the process is adiabatic compression; so we apply:

P_aV_a^\gamma=P_cV_c^\gamma

\frac{P_c}{P_a}=[\frac{V_a}{V_c}]^{(2/3)

\frac{P_c}{1.0 atm}=[\frac{1}{2.5}]^{(2/3)

P_c=0.27 atm

Thus, the pressure at c = 0.27 atm

8 0
3 years ago
Consider the reaction in the lead-acid cell pb(s) pbo2(s) 2 h2so4(aq) 2 pbso4(aq) 2 h2o(l) for which e°cell = 2. 04 v at 298 k.
aleksley [76]

δg° for the reaction having e° cell = 2.04v. is 393.658kJ.

The lead (Pb) in the lead storage battery act as an anode

<h3>What is Voltaic Cell?</h3>

A voltaic cell or galvanic cell is an electrochemical cell that uses chemical reactions to produce electrical energy.

<h3>Parts of voltaic cell</h3>

Anode where oxidation occurs Cathode where reduction occurs.

Therefore, Pb acts as anode and PbO2 act as a cathode.

Given,

E° cell = 2.04v

Faraday constant= 96485 C/mol

Moles of electron transferred n= 2

∆G = -nFE°

= -2 × 96485 × 2.04

= 393.658kJ

Thus we concluded that the δg° for the reaction having e° cell = 2.04v. is 393.658kJ.

learn more about voltaic cell :

brainly.com/question/1370699

#SPJ4

8 0
2 years ago
The flavor of anise is due to anethole, a compound with the molecular forumal C10H12O. Combustion of one mole of anethole produc
AfilCa [17]

Answer:

Change in temperature of calorimeter is 4.52^{0}\textrm{C}

Explanation:

Molar mass of anethole = 148.2 g/mol

So, 0.950 g of anethole = \frac{0.950}{148.2}moles of anethole = 0.00641 moles of anethole

1 mol of anethole releases 5541 kJ of heat upon combustion

So, 0.00641 moles of anethole release (5541\times 0.00641)kJ of heat or 35.52 kJ of heat

7.854 kJ of heat increases 1^{0}\textrm{C} temperature of calorimeter.

So, 35.52 kJ of heat increases (\frac{1}{7.854}\times 35.52)^{0}\textrm{C} or 4.52^{0}\textrm{C} temperature of calorimeter

So, change in temperature of calorimeter is 4.52^{0}\textrm{C}

7 0
3 years ago
Do you know the answer to this question?
Yakvenalex [24]
Yes i do know what this question is.
6 0
4 years ago
What is it called when a girl is romantically and sexually attracted to women but find men attractive?
umka21 [38]

Answer:

i think is biromantic, homosexual woman is romantically attracted to people of multiple genders, but is only sexually attracted to women. A biromantic, homosexual man is romantically attracted to people of multiple genders, but is only sexually attracted to men.

Explanation:

<em>i hope this help :/</em>

5 0
3 years ago
Read 2 more answers
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