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Art
11 days ago
10

The half-cell is a chamber in the voltaic cell where one half-cell is the site of the oxidation reaction and the other half-cell

is the site of the reduction reaction. type the half-cell reaction that takes place at the anode for the iron-silver voltaic cell. indicate the physical states of atoms and ions using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively. use (aq) for an aqueous solution. do not include phases for electrons. express your answer as a chemical equation.
Chemistry
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1. If a car is traveling 90 mi/hr, how many feet will the car travel in 1 sec? In 5 sec?
alisha [2963]

Answer:

The vehicle travels 660 feet

Explanation:

Initially, convert the speed into Feet per second

The car's speed is 90 mi/hr

1 mi = 5280 ft

For 90 miles, we calculate 90 x 5280 = 475,200 feet

1 hour = 60 minutes

1 minute = 60 seconds

Therefore,

1 hour = 60 x 60 seconds = 3600 seconds

Speed is defined as the distance covered by an object over time. The speed formula is:

Speed =\frac{distance}{time}

Speed =\frac{90mi}{1hr}... given

Speed =\frac{475200 ft}{3600sec}

Speed = 132 ft/sec

Thus,  time = 5 seconds

Speed =\frac{distance}{time}

distance =speed\times time

distance = 132ft/sec\times 5sec

Distance = 660 feet

3 0
3 months ago
What is the concentration of O2(g), in parts per million, in a solution that contains 0.008 gram of O2(g) dissolved in 1000. gra
eduard [2782]

The concentration of O₂ in H₂O can be expressed as ppm

ppm stands for parts per million - mg/kg

indicating the quantity of mg in 1 kg of solution

Here, the mass of O₂ is 0.008 g

Since 1000 mg equals 1 g

the mass of O₂ in mg is calculated as - 0.008 g x 1000 mg/g = 8 mg

The mass of the water amounts to 1000 g

which is the same as 1 kg

thus the mass of water in kg is - 1000 g / 1000 g/kg = 1 kg

therefore, there are 8 mg of O₂ in 1 kg of water

which gives a concentration of O₂ of - 8 mg/kg

this can also be represented as 8 ppm

the final answer is 8 ppm

5 0
3 months ago
Read 2 more answers
The reaction between methanol and oxygen gas produces water vapor and carbon dioxide. 2CH3OH(l)+3O2(g)⟶4H2O(g)+2CO2(g) Three sea
Anarel [2989]

Answer:

The flask yielding the greatest amount of product is the second flask.

The water molecules produced are X = 8 \ molecules

Explanation:

From the prompt we learn that

The chemical reaction is

2CH3OH(l) + 3O2(g)⟶4H2O(g)+2CO2(g)

The first flask contains 3 molecules of C H 3 O H and 3 molecules of O 2

The second flask has 1 molecule of C H 3 O H and 6 molecules of O 2.

The third flask consists of 4 molecules of C H 3 O H and 2 molecules of O 2.

Analyzing the three flasks, it's evident that the flask producing the most considerable total product is the second one.

According to the balanced equation, 2 moles of C H 3 O H react with 3 moles of oxygen, making O 2 the limiting reagent.

Generally, one mole of any substance is 1 * N_A of that substance.

Here, N_A represents Avogadro's number valued at N_A = 6.02214076 * 10^{23} \ molecules.

As seen in the balanced equation, 3 moles of O 2 (3 * N_A molecules of O 2) yield 4 moles of H2O (4 *

Thus, 6 molecules of O 2 would generate X molecules of H 2 O.

So

X = \frac{6 * (4 * N_A }{3 * N_A}

=> X = 8 \ molecules

6 0
4 months ago
Cups ans glasses are taking too long to air dry. This could be caused by
Anarel [2989]

Answer: Servsafe 9

Explanation:

Take food off the surface

clean the area

rinse the area

sanitize the area

let the area dry naturally

3 0
3 months ago
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