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Serggg [28]
3 years ago
7

What is chemistry n laboratory​

Chemistry
1 answer:
grin007 [14]3 years ago
3 0
a laboratory for research in chemistry. chem lab, chemistry lab. lab, laboratory, research lab, research laboratory, science lab, science laboratory - a workplace for the conduct of scientific research.
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PLEASE HELP ASAP!!! 25 POINTS AND BRAINLIEST FOR FASTEST AND BEST ANSWER!!!
QveST [7]

Which list places the layers of the sun in the correct order from innermost to outermost?

Corona, photosphere, chromosphere

Photosphere, convective zone, radiative zone

Convective zone, chromosphere, corona

Radiative zone, corona, convective zone

the answer is most likely  

Convective zone, chromosphere, corona

7 0
3 years ago
Given that the boiling points of ethanol and diethyl ether are 78.1°C and 34.6°C, respectively, which should have the higher vap
anyanavicka [17]
Diethyl ether, since 20 is closer to 34.6 it should start boiling faster than the other which is no where near it
7 0
3 years ago
Read 2 more answers
a solution of iron 3 sulfate and a solution of lead 2 perchlorate react to produce lead 2 sulfate precipitate
777dan777 [17]

Balanced equation :

Fe2(SO4)3 + 3Pb(ClO4)2 → 2Fe(ClO4)3 + 3PbSO4

<h3>Further explanation</h3>

Given

Word equation

Required

Balanced equation

Solution

Chemical equations can be expressed in terms of:

  • word equation
  • skeleton equation
  • balanced equation

Word equation :

a solution of iron 3 sulfate and a solution of lead 2 perchlorate react to produce lead 2 sulfate precipitate

Skeleton equation :

Fe2(SO4)3 + Pb(ClO4)2  → Fe(ClO4)3 + PbSO4

Balanced equation :

Fe2(SO4)3 + 3Pb(ClO4)2 → 2Fe(ClO4)3 + 3PbSO4

7 0
3 years ago
3. Methyl acetate is hydrolyzed at 25 oC in acidic environment. Aliquots of equal volume are removed and titrated with NaOH solu
avanturin [10]

Solution :

Time (sec)       Volume of NaOH (mL)

339                           26.23

1242                         27.80

2745                        29.70

4546                         3.81

$\infty$                               39.81

Now the example of the first order kinetics w.r.t volumetric analysis is :

$k=\frac{2.303}{t} \log \left(\frac{v_{\infty}-v_0}{v_{\infty}- v_t}\right)$

Here, $v_{\infty}= \text{ volume at }\infty = 39.81$

$v_{t}= \text{ volume at time 't' } = 27.80$

$v_0$ = volume at time 0 = 0

Since the interval is not constant, we take the time interval as

$=\frac{903+1503+1801}{3}$

$=\frac{4207}{3}$

= 1402.3333

≈  1402 seconds

$k=\frac{2.303}{1402} \log \left(\frac{39.81-0}{39.81-27.80}\right)$

  $=(0.001643) \log \left(\frac{39.81}{10.01}\right)$

  = 0.001643 x 0.52045

  = 0.00082

  $= 8.55 \times 10^{-4} \ sec^{-1}$

Therefore, the first order rate constant is k $= 8.55 \times 10^{-4} \ sec^{-1}$.

5 0
3 years ago
Diffusion is the movement of water between the cell membrane. <br>O True <br>O False​
jarptica [38.1K]

it is true good friend chip chip cherrio

3 0
3 years ago
Read 2 more answers
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