When the teacher opened the bottle of ammonia, the particles spread out by diffusion through the air due to the random collision of particles.
Answer:
Option 4 : 56.28g
Explanation:
2H2O ---> 2H2 + O2
Step 1: calculating moles O2
⇒For each mole O2 we have 2 moles of H2
1) (50.00g O2)/(32.00g/mol O2) = 1.563mol O2
⇒For each mole O2 we have 2 moles of H2, so we multiply moles of O2 by 2 to get moles of H2O
Step 2: Calculating moles H2O
2) (1.563mol O2)(2mol H2O/1mol O2) = 3.125mol H2O
Step 3: Calculating mass H2O
3. (3.125mol H2O) * (18.01g/mol H2O) = 56.28g H2O
We need 58.28g H2O to make 50.00g O2
Answer:
0.906 gm/l
Explanation:
We know that molarity of the a solution is given by,
, where 'M' is the molarity, 'w' is the weight of the sample, 'm' is the molar mass, and 'v' is the volume of the solution.
Molarity of a solution tells us the concentration of the solute in the solvent.
Molar mass of KCl is = 74.55
Putting the values we get,
![M = \frac{16.9}{74.55} \times \frac{1000}{250}=0.906 gm/l](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7B16.9%7D%7B74.55%7D%20%5Ctimes%20%5Cfrac%7B1000%7D%7B250%7D%3D0.906%20gm%2Fl)
So the molarity of KCl solution is 0.906 gm/l.
Answer:
Salamander And Lizard are the closest
Explanation:
A salamander is an amphbian just like a lizard. All the others aren't even CLOSE To the same species.
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Also, can I please have Brainliest so I can finish my challenge? TY! OvO<u> _______</u>
B. The study of matter and energy.
Because physical science is everything that doesn't include organic things.