Round to the place value of the underlined digit 934, 567 the 4 is underlined

Response:

vffnxntbdnr Gn fvbbvxgngdfg

To arrive at this, we set the angles as A and B.

We understand that A=B+88 and A+B=90 degrees. Solving this gives A as 89 and B as 1.

Option b) 1960 is the total hours worked by the electrician.

Step-by-step explanation:

It is stated that a full-time electrician will put in 40 hours weekly.

Hence, we should determine the total hours he could work in a year, which consists of twelve months.

Thus, a year consists of 365 days.

To find the number of weeks in these twelve months:

Number of weeks = Total days in a year / 7 days of the week

⇒ 365 / 7

⇒ 52.14 (approximately 52 weeks)

It translates to 52 weeks within twelve months.

Out of these 52 weeks, three weeks are designated for vacation.

The total weeks the electrician will work = 52 weeks - 3 weeks

⇒ 49 weeks.

Thus, the electrician worked for 49 weeks.

To find his total worked hours = 49 weeks × 40 hours

⇒ 1960 hours.

So, the total hours the electrician worked amounts to 1960 hours, which corresponds to option b).

Answer:

4.0921 reflects the logarithm of the equilibrium constant.

Step-by-step explanation:

; ​E​° = - 0.41 V

; E° = 0.80 V

Iron has a negative reduction potential, indicating its tendency to lose electrons and undergo oxidation, and thus it will be at the anode.

=Reduction potential of cathode - Reduction potential of anode

; ​E​° = - 0.41 V

; E° = 0.80 V

Net reaction:

n = 2

To determine the equilibrium constant, we utilize the correlation with Gibbs free energy, as follows:

and,

Aligning these two equations yields:

where,

n = electrons transferred = 2

F = Faraday's constant = 96500 C

= standard electrode potential of the cell = 1.21 V

R = gas constant = 8.314 J/K.mol

T = reaction temperature =

Substituting values into the equation, we arrive at:

4.0921 represents the logarithm of the equilibrium constant.