Answer:
D. Vibrating around fixed positions
Explanation:
It's right on edge
Answer : The mass of water produced will be 32.78 grams.
Explanation : Given,
Mass of
= 21.9 g
Molar mass of
= 72.15 g/mole
Molar mass of
= 18 g/mole
First we have to calculate the moles of
.

Now we have to calculate the moles of
.
The balanced chemical reaction will be,

From the balanced reaction we conclude that
As, 1 mole of
react to give 6 moles of 
So, 0.3035 moles of
react to give
moles of 
Now we have to calculate the mass of
.


Therefore, the mass of water produced will be 32.78 grams.
Answer:
Carbon is non metal because it is found in the right side of the periodic table while calcium is metal because it is found in the left side of the periodic table.
Answer:
Explanation:
The air 9% mole% methane have an average molecular weight of:
9%×16,04g/mol + 91%×29g/mol = 27,8g/mol
And a flow of 700000g/h÷27,8g/mol = 25180 mol/h
In the reactor where methane solution and air are mixed:
In = Out
Air balance:
91% air×25180 mol/h + 100% air×X = 95%air×(X+25180)
Where X is the flow rate of air in mol/h = <em>20144 mol air/h</em>
<em></em>
The air in the product gas is
95%×(20144 + 25180) mol/h = 43058 mol air× 21%O₂ = 9042 mol O₂ ×32g/mol = <em>289 kg O₂</em>
43058 mol air×29g/mol <em>1249 kg air</em>
Percent of oxygen is:
=<em>0,231 kg O₂/ kg air</em>
<em></em>
I hope it helps!
Answer: One formula unit of NaCl consists of one cation, whose chemical symbol is
and one anion whose chemical symbol is 
Explanation:
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
The cation is formed by the metal sodium which forms
and the anion is formed by non metal chlorine which forms
.
For a formula unit of sodium chloride, the charges have to be balanced , thus the valencies of ions are exchanged and the neutral compound result. Thus
and
combine to form neutral 