How many lead (Pb) atoms will be generated when 5.38 moles of ammonia react according to the following equation: 3PbO+2NH3→3Pb+N

Result:

The Rydberg constant of 3.3 x 10¹⁵ Hertz corresponds to 1.090 x 10⁷ m⁻¹

Justification:

Provided:

The Rydberg constant is 3.3 x 10¹⁵ Hz

1 Rydberg constant = 3.3 x 10¹⁵ Hz

1 Rydberg constant = 1.090 x 10⁷ m⁻¹

Thus, the Rydberg constant of 3.3 x 10¹⁵ Hertz translates to 1.090 x 10⁷ m⁻¹

Answer:
            [OH⁻]  =  3.54 × 10⁻¹⁰ M

Solution:

The relationship between pOH and [OH⁻] is expressed as,

                           pOH  =  - log [OH⁻]

Substituting the value of pOH,

                           9.45  =  -log [OH⁻]

Finding [OH⁻],

                           [OH⁻]  =  10⁻⁹·⁴⁵                       ∴ 10  =  Antilog

                           [OH⁻]  =  3.54 × 10⁻¹⁰ M

It is likely to turn green or blue, I think

Answer:

If practical applications for chemistry hadn't been explored, our understanding of what it means to be human, and the biological aspects that make us who we are, would remain unclear. Moreover, we wouldn't have achieved significant advancements in areas such as vaccines and other critical fields.

Explanation:

Response:The ethanol percentage is 0.1093%

Explanation:

As given:

t = time = 10 s

I = current = 320 mA

F = Faraday's constant = 96485.3365 C mol⁻¹

n = number of electrons transferred = 4

Molecular weight of ethanol is 46 g/mol

Question: What is the percent (by volume) of ethanol in the driver's breath, %E =?

First, calculate the ethanol mass:

The moles of ethanol:

Applying the ideal gas law formula:

Here:

T = 26°C = 299 K

P = 1 atm

Substituting in the values:

The percentage of ethanol:

%