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mario62 [17]
3 years ago
10

Which of the following will have the slowest rate of diffusion at a given temperature?

Chemistry
1 answer:
Orlov [11]3 years ago
4 0
So diffusion is inversely proportional to mass !
so as mass of the particle increases, diffusion decreases !
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The molecular mass Of a compound of carbon and hydrogen is 42. What is the empirical formula of the compound
Rina8888 [55]

Answer:

43 i think

Explanation:

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3 years ago
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A chemist must prepare 575.mL of 1.00M aqueous sodium carbonate Na2CO3 working solution. He'll do this by pouring out some 1.58M
igor_vitrenko [27]

Answer : The volume in mL of the sodium carbonate stock solution is 364 mL.

Explanation :

According to dilution law:

M_1V_1=M_2V_2

where,

M_1 = molarity of aqueous sodium carbonate

M_2 = molarity of aqueous sodium carbonate stock solution

V_1 = volume of aqueous sodium carbonate

V_2 = volume of aqueous sodium carbonate stock solution

Given:

M_1 = 1.00 M

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Now put all the given values in the above formula, we get:

1.00M\times 575mL=1.58M\times V_2

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8 0
3 years ago
(22 points) Gas conversion problems #4-7 pls I have no idea how to solve this and i’ve tried but i don’t get it :(
vova2212 [387]

Answer:

See attached

Explanation:

The empirical gas laws relate the effect of one gas-law variable upon another. The gas-law variables include Pressure (P), Volume(V), Temperature(T) and mass (n). When two of the four variables are related holding the other two constant, the relationships are called 'The Empirical Gas Laws'.

These include

Boyles Law* => P ∝ 1/V; Temp & mass remain constant => P₁·V₁ = P₂V₂

(NOTE => Boyles Law is the only 'inverse' empirical relationship)

Charles Law => V ∝ T; Press & mass remain constant => V₁/T₁ = V₂/T₂

Gay-Lussac Law => P ∝ T; Vol & mass remain constant => P₁/T₁ = P₂/T₂

Avogadro's Law => n ∝ V; Press & Temp remain constant => n₁/V₁ = n₂/V₂

Combined Law => All variables in play => P₁V₁/n₁T₁ = P₂V₂/n₂T₂

*Note => <u>Convert all Temperature values to Kelvin</u> when working with Empirical Gas Laws. If a different dimension is needed, convert after working with Kelvin values. => ( K = °C + 273 )

__________________

Standards of the Gas Laws at 0°C(273K) STP    

                 (Std Intn'l System)       Other common equivalent unit values

Pressure              1 Atm             760mmHg, 101.325Kpa, 760 Torr, 14.2 lbs/in²

Volume                1 Liter

mass                    1 mole

Temperature     0°C(=273K)           K = °C + 273  

___________________

4.   ?Atm = 758.7mmHg

758.8mmHg = 758.7mmHg x (1Atm/760mmHg) = 0.9983 Atm

5. ?Kpa = 760.00mmHg x (1 Atm/760.00mmHg) x 101.325Kpa/1Atm)

= 101.325Kpa

6. Boyles Law => Decrease Pressure => Increase Volume (of gas) in bag.

P₁ = 101.325Kpa => P₂ = 99.82Kpa

P₁V₁ = P₂V₂ => V₂ = P₁V₁/P₂ = V₁(101.325Kpa/99.82Kpa) = 1.015·V₁ => That is, the volume of gas in bag will expand to 1.015 x that at sea level. The bag may burst if not elastic.

7.  ?Kpa = 2.56Atm

2.56Atm = 2.56Atm x 101.325Kpa/1Atm = 259.392Kpa  

6 0
3 years ago
Before it is used in the reactor, nuclear fuel is it not radioactive ?
puteri [66]

Answer:

This is false as nuclear fuel  is radioactive even before its use in a reactor.

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WHAT KIND OF CELLS ARE HUMANS MADE OF?
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Animal cells

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