3 years ago

What is the unit of measure when using a beaker

Chemistry

2 answers:

svetlana [45]3 years ago

8 0

On a beaker you measure in ml.(Ml = millilitres!)

yulyashka [42]3 years ago

5 0

When Use a beaker you measure in ml.

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A diffusion coefficient KG was determined for the diffusion of a gas A through a stagnant film B [KG = 0.88 mol//h-ft2-atm].

Angelina_Jolie [31]

Explanation:

Transfer of mass A into stagnant film B depends on the availability of driving force.

Whereas driving force is the pressure difference at the surface of A and the bulk.

As, $N_{A} \propto (P_{A1} - P_{A2})$

$N_{A} = K_{G} \times (P_{A1} - P_{A2})$

Therefore, putting the given values into the above formula as follows.

$N_{A} = K_{G} \times (P_{A1} - P_{A2})$

= $0.88 \times (0.2 atm - 0.05 atm)$

= 0.132 $mol/h.ft^{2}$

Thus, we can conclude that the flux of A from a surface into a mixture of A and B is 0.132 $mol/h.ft^{2}$

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4 years ago

How much water. does moss contain

Lady_Fox [76]

Not sure if this answers your question but moss can hold up to 20 times its weight in liquid.

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4 years ago

In a titration, 45.0 mL of KOH is neutralized by 75.0 mL of 0.30M HBr. How much KOH is in 1.0 liter of the KOH solution ?

photoshop1234 [79]

KOH + HBr ---> KBr + H2O

0,3 moles of HBr ---in-------1000ml
x moles of HBr-------in------75ml
x = 0,0225 moles of HBr

according to the reaction: 1 mole of KOH = 1 mole of HBr
so
0,0225 moles of HBr = 0,0225 moles of KOH

0,0225 mole of KOH------in-----45ml
x moles of KOH -----------in------1000ml
x = 0,5 moles of KOH

answer: 0,5 mol/dm³ KOH (molarity)

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Which element is a liquid at 305 K and 1.0 atm

Svetradugi [14.3K]

Your answer is Gallium.

Hope this helps (:

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4 years ago

What is the name of CaCO2

weqwewe [10]

Calcium--Cobalt(1/2)

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4 years ago