6. How many moles of Cu(NO3)2 are in 25 ml of a 0.35 M solution of Cu(NO3)2? a) How many moles of NO3- are present in 25 ml of the above solution? b) What volume of this solution should be used to get 0.050 moles of Cu(NO3)2?

0.00875 moles Cu(NO3)2

a) 0.0175 moles NO3-

b) We should use 0.14L

Explanation:

Step 1: Data given

Volume = 25 mL = 0.025 L

Molarity of a Cu(NO3)2 solution = 0.35 M

Step 2: Calculate moles Cu(NO3)2

Moles Cu(NO3)2 = molarity * volume

Moles Cu(NO3)2 = 0.35 M * 0.025 L

Moles Cu(NO3)2 = 0.00875 moles

Step 3: Calculate moles NO3-

Cu(NO3)2 → Cu^2+ + 2NO3-

In 1 mol Cu(NO3)2 we have 2 moles NO3-

For 0.00875 moles Cu(NO3)2 we'll have 2*0.00875 = 0.0175 moles NO3-

Step 4: What volume of this solution should be used to get 0.050 moles of Cu(NO3)2?

Volume =  moles / molarity

Volume = 0.050 moles / 0.35 M

Volume = 0.14L

i believe the answer is c. "baking" is the gerund, while "baking blueberry muffins" would be the gerund phrase. hope this ! : )

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.