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andrey2020 [161]
2 years ago
5

chromium metal can be plated from an acidic solution of cro3. cro3(aq) 6h (aq) 6e- → cr(s) 3h2o how many grams of chromium will

be plated by the passage of 19,300 c (coulombs)?
Chemistry
1 answer:
loris [4]2 years ago
7 0

Grams of chromium will be plated by the passage of 19,300 c (coulombs) is 1.73g.

It would assist preserve blood sugar tiers normal by way of improving the way the body uses insulin. human beings use chromium for chromium deficiency. it's also used for diabetes, excessive cholesterol, athletic overall performance, bipolar sickness, and many different purposes, however, there's no excellent clinical evidence to aid most of these makes use.

We have-

w=ZQ

or, w=

n×19,300

Molar mass×Q

The molar mass of Cr=52

n-factor =6

Putting the values, we have:

w= 6×96500

  = 52×24000

​ =2.56 g

So, the mass of Cr deposited = 1.73g

Learn more about chromium here:-brainly.com/question/3262

#SPJ4

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Que cambios son fisicos y cuales son quimicos??
melomori [17]
<span>A, b, y c son cambios físicos. D es un cambio químico.</span>
6 0
3 years ago
A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas reaction vessel. The vessel is
Andre45 [30]

Answer:

525°C is the maximum safe operating temperature the engineer should recommend for this reaction.

Explanation:

Volume of the cylindrical container = V = \pi r^2h

Height of the vessel = h =60.0 cm

Diameter of the vessel = d = 50.0 cm

Radius of the vessel = r = 0.5d = 25.0 cm

V=3.14\times (25.0 cm)^2\times 60.0 cm=117,809.72 cm^3=117,809.72mL

1 cm^3=1 mL

1 mL = 0.001 L

117,809.72 mL = 117,80972 L ≈ 118 L

Pressure of the gas in vessel = P = 7.40 MPa = 7.40\times 10^6 Pa

1 MPa = 10^6 Pa

1 atm = 101325 Pa

P=\frac{7.40\times 10^6}{101325} atm=73.0 atm

Mass sulfur hexafluoride gas = 19.2 kg = 19200 g

1 kg = 1000 g

Moles of sulfur hexafluoirde = \frac{19200 g}{146 g/mol}=131.5 mol

Temperature of the gas in vessel = T

Using an ideal gas equation :

PV=nRT

T=\frac{PV}{nR}=\frac{73.0 atm\times 118 L}{0.0821 atm L/mol K\times 131.5 mol}

T = 797.8 ≈ K 798 K

T = 798 - 273°C = 525°C

525°C is the maximum safe operating temperature the engineer should recommend for this reaction.

3 0
3 years ago
Can somebody do a science project for me pls? I have ADD and im so confused I just can't do it. (the instructions are down below
lawyer [7]

answer this is so hard its impossible butt I'll ask my dad

4 0
3 years ago
Can you please help me
aleksandr82 [10.1K]
Ionic compounds are made up of cations and anions.
So,  C would be the correct answer
8 0
3 years ago
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Which of the following lists igneous rock in order from least to most ferromagnesian silicates?
Zepler [3.9K]

Answer:

Felsic, intermediate, mafic, ultramafic

Explanation:

Ferromagnesian igneous rocks are those that contains ferromagnesian silicate minerals with magnesium and iron in their structure. Some of these minerals are olivine, pyroxene, amphibole, calcic palgioclase e.tc. Ultramafic rocks have these silicate minerals in them. They impart a dark coloration on their outlook.

Felsic minerals on the other extreme are rich in non-ferromagesian minerals such as quartz, feldspars which lacks magnesium and iron in their structures. The intermediate and the mafic igneous rocks are a mix between the two extremes. So in terms of ferromagnesian silicates component:

    felsic < intermediate < mafic < ultramafic

6 0
3 years ago
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