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kenny6666 [7]
3 years ago
12

In their experiment to form a primitive living cell, Urey and Miller set up various flasks with water vapor and the gases CO2, C

H4, and H2. One flask also had electrodes to generate spark; another flask had electrodes to generate spark; another flask had everything but electrodes. Which of the flasks showed presence of coacervates, and why?
A: only the flask with the electrodes because the electrodes were a source of electricity that simulated lighting.
B: only the flask without electrodes because the electricity generated from electrodes would have destroyed the coacervates.
Chemistry
1 answer:
Digiron [165]3 years ago
4 0
The answer is clearly the option <span>A, because in the Urey/Miller experiment, they simulated Earth's early atmosphere and they simulated the lightning as electrodes, to see if single compounds or amino acids would form. Hope this is useful</span>
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Bonds payable to whomever holds them are called _____ bonds or unregistered bonds.
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7 0
2 years ago
Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with manganese(IV) oxide:You add 40.7 g of M
Alex787 [66]
:<span>  </span><span>4 HCl + MnO2 → MnCl2 + 2 H2O + Cl2 

(33.7 g MnO2) / (86.93691 g MnO2/mol) = 0.38764 mol MnO2 
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(a) 
1.2424 moles of HCl would react completely with 1.2424 x (1/4) = 0.3106 mole of MnO2, but there is more MnO2 present than that, so MnO2 is in excess and HCl is the limiting reactant. 

(b) 
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5 0
3 years ago
Explain the steps you would follow to make 500 mL of a 0.3 M solution of sucrose
RSB [31]

Answer:

see explanation

Explanation:

Solutions are prepared from one of three solute sources ...

- solid solute from manufacturer,

-liquid solute from manufacturer,

-stock concentrate of solute for dilution to lower concentrations.

In this problem, sucrose is a stock solid with a formula mass of 342.3 grams/mol. The amount of solid needed can be determined using the formula:

mass of solute needed (grams) = (Molarity needed x Volume needed in Liters x formula weight) / (decimal fraction purity of stock solid)

Molarity needed = 0.3M

Volume needed = 500 ml = 0.500 liters

Formula weight = 342.3 grams/mole

Purity factor (assumed) = 100% = 1.00 (should be posted on stock bottle label) For example, a 95% pure stock solid => purity factor of 0.95.

∴ grams of sucrose needed = (0.3M*)(0.500L)(342.3g/mole)/(1.00) =51.345 grams sucrose.

Measure 51.345 grams of sucrose into mixing vessel and add solvent water up to, but not to exceed 500 ml total volume. Mix until homogeneous.

4 0
3 years ago
The equilibrium concentrations for the reaction between N2 and O2 to form NO at a certain temperature are given in the table bel
MaRussiya [10]

Answer:

c

Explanation:

c is correct i believe

8 0
2 years ago
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