Answer:
Current
Explanation:
An electric fence used to contain cattle works by transmitting energy through a conductor creating an electric current.
An electric fence is usually connected to an electric power source . The connection brings about the flow of electric charges(current) which is aided by the presence of a conductor. The conductor ensures smooth flow of electric current to achieve the main purpose of the fence.
Thus 174 protons would make at most 6 copper atoms. However, it would take 174 extra electrons (29 per atom) and even more neutrons than that to construct neutral copper atoms with stable nuclei.
Light travels at precisely <span>299,792,458 metres every second (abbreviated to 3 x 10^8 metres every second but let's be precise)
There are 60 seconds in every minute (</span><span>299 792 458 x 60 = 17,987,547,480m)
60 minutes in every hour (17,987,547,480 x 60 = 1,079,252,849,000m)
96 hours in 4 days (</span><span>1,079,252,849,000 x 96 = 10,360,827,350,000m)
</span><span>Now let's convert to km to make this number (slightly) more manageable
(</span>10,360,827,350,000 / 1000 = <span>103,608,273,500km)
</span>Light travels <span>103,608,273,500km in 4 days - that's the equivalent of going around the equator of the earth 813,124 times!</span><span>
</span>
(Question 1 atoms) (question 2 cells)
Answer:
Mass = 35.02 g
Explanation:
Given data:
Number of moles = 1.75 mol
Mass of HF = ?
Solution:
Formula:
Mass = number of moles × molar mass
Molar mass of HF = 20.01 g/mol
by putting values,
Mass = 1.75 mol × 20.01 g/mol
Mass = 35.02 g
