Answer all and you can get brainest

Chemistry

2 answers:

ludmilkaskok [199]3 years ago

5 0

Answer:earth quakes

Explanation: I did the work sheet

LenKa [72]3 years ago

4 0

Psychology, the brain and how the brain reacts/ the persons emotions towards certain things and situations

Neurologist specializes with the brain

Anaesthesiologist specializes in the amount of anaesthesia needed for a certain patient (The amount of anaesthesia comes from the patients weight and other factors) making sure the patient doesn’t wake up during surgery and other procedures

You might be interested in

Salt solutions can be __________ to give solid salts. What word completes this sentence?

NikAS [45]

Answer:

evaporated

Explanation:

Once the solution is evaporated there will only be salt left, since the only other thing in the soulution is water.

7 0

4 years ago

A 21.5 g sample of nickel was treated with excess silver nitrate solution to produce silver metal and nickel(II) nitrate. The re

Arte-miy333 [17]

The mass of nickel is 36.5g metal.

Ni+2AgNO3 → Ni(NO3)2+2Ag

21.5g Ni / 58.69g = 0.366mol Ni

Ag = 107.87

N i= 58.69

But, 2molAg per 1 mol Ni, so, change in mass is more like...

Twice as many moles Ag as Ni, and then the mass relationship is 107.87g Ag / 58.69, but due to the 2Ag: 1Ni mol ratio, the change in mass is like:

107.87(2) / 58.69 = 3.68 times increase

So, the final mass of Ag is 3.68x, and the change in mass of Ni is x

36.5=(21.5-x)+(3.68x)

Solve for x

x=5.597

3.68x=g Ag

3.68(5.597)=20.59

21.5 - x = g Ni after reaction

21.5 - 5.597 = 15.903g Ni

20.59g Ag + 15.903g Ni = 36.5g metal

The mass of nickel is 36.5g metal.

Learn more about reactions here: brainly.com/question/16416932