An atom of silver has a radius of and the average orbital speed of the electrons in it is about . calculate the least possible uncertainty in a measurement of the speed of an electron in an atom of silver. write your answer as a percentage of the average speed, and round it to significant digits.

Percentage of uncertainty in average speed of an electron is 0.1756%.

Explanation:

Using Heisenberg uncertainty principle:

Δx = Uncertainty in position

Δp = Uncertainty in momentum

Δv = Uncertainty in average speed

h = Planck's constant =

m = mass of electron =  

We have

Δx = 2 × 165 pm = 330 pm =

Average orbital speed of electron = v =

Percentage of uncertainty in average speed:

1.consider the following balanced equation and answer parts a through. show calculations for each part.  

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)  

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.  

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3  

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.  

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.  

explanation:

just did the assignment and the answer was #1 +2 n