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Gwar [14]
3 years ago
7

To enter scientific notation use the e function. EX: 6.02x1023 would be entered as 6.02e23

Chemistry
1 answer:
Lerok [7]3 years ago
3 0
Dam I really don’t know but good lucky bro
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How many grams of lead(ii) chloride is produced if 13.87 g lead(ii) nitrate combines with excess hydrochloric acid to produce le
olga_2 [115]
<span>Answer: Pb(NO3)2+2HCl=PbCl2+2HNO3 Step 2 Find # of moles of Pb 13.87g Pb(NO3)2 x 1 mol/331.22=.041875 mol Pb(NO3)2 Step 3 Use balanced equation to find weight of Pb(NO3)2 .041875mol Pb x 1 mol Cl2/1mol Pb x 70.90g/1 mol Cl2=2.9689g Cl2 .041875 mol Pb x 207.2/1mol Pb=8.6765g Pb =11.65g</span>
3 0
3 years ago
Read 2 more answers
In the video the presenter very briefly mentions further purification of the final product. (a). Explain why a further purificat
adelina 88 [10]

Due to presence of impurities further purification is needed.

A further purification is needed of the final product because of the presence of impurities in the final product. Further purification can also be done in order to gain pure product. There are various ways and methods which can be used for the purification such as Sublimation, Crystallization, Distillation, Differential Extraction and Chromatography.

These methods can be used for further purification and helps in the extraction of pure solution of final product so we can conclude that due to presence of impurities further purification is needed.

Learn more: brainly.com/question/25799551

8 0
3 years ago
Water has a vapor pressure of 23.8 mm Hg at 25°C and a heat of vaporization of 40.657 kJ/mol. Using the Clausius-Clapeyron equat
zubka84 [21]

Answer:

P = 559.553 mmHg

Explanation:

Clasius-Clapeyron:

  • Ln(P2/P1) = - ΔHv/R [ 1/T2 - 1/T1 ]

∴ P1 = 23.8 mmHg = 3.173 KPa

∴ T1 = 25°C ≅ 298 K

∴ ΔHv = 40.657 KJ/mol

∴ R = 8.314 E-3 KJ/K.mol

∴ T2 = 96°C ≅ 369 K

⇒ Ln P2/P1 = - (40.657 KJ/mol/8.314 E-3 KJ/K,mol) [(1/369 K) - (1/298 K) ]

⇒ Ln P2/P1 = - (4890.185 K) [ - 6.457 E-4 K-1 ]

⇒ Ln P2/P1 = 3.1575

⇒ P2/P1 = 23.511

⇒ P2 = (23.511)(3.173 KPa)

⇒ P2 = 74.601 KPa = 559.553 mmHg

6 0
3 years ago
Which symbol represent an isotope of carbon
Ira Lisetskai [31]

Answer:    

                  13

                       X

                    6

Explanation:

8 0
3 years ago
Read 2 more answers
0 ml from a 2.0 m solution of hcl is diluted to 10.0 ml using deionized water. what is the concentration of the new solution?
krok68 [10]
<span>The concentration would remain at 2.0m. The problem states that 0 ml from the 2.0 m solution is diluted, therefore implying that none of it was diluted. Therefore, the level of concentration of the new solution would be the same as before.</span>
3 0
3 years ago
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