Answer:
It's probably to make the chemical symbols look smarter to other people.
Explanation:
Probably this is true.
The molarity of the solution : 1.2 M
<h3>Further explanation</h3>
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
![\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}](https://tex.z-dn.net/?f=%5Clarge%7B%5Cboxed%20%7B%5Cbold%20%7BM%20~%20%3D%20~%20%5Cfrac%20%7Bn%7D%20%7BV%7D%7D%7D)
Where
M = Molarity
n = Number of moles of solute
V = Volume of solution
mass of NaCl=35 g
Volume of solution = 0.5 L
mol NaCl(MW=58.44 g/mol) :
![\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{35}{58.44}\\\\mol=0.6](https://tex.z-dn.net/?f=%5Ctt%20mol%3D%5Cdfrac%7Bmass%7D%7BMW%7D%5C%5C%5C%5Cmol%3D%5Cdfrac%7B35%7D%7B58.44%7D%5C%5C%5C%5Cmol%3D0.6)
The molarity :
![\tt M=\dfrac{0.6}{0.5}=1.2](https://tex.z-dn.net/?f=%5Ctt%20M%3D%5Cdfrac%7B0.6%7D%7B0.5%7D%3D1.2)
Answer:
Wheat!
Explanation:
Corn ranks first, Wheat, then Rice!
Answer:
Mass of hydrogen needed = 10 g
29.22 gram of sodium are required
Explanation:
1 )Given data:
Mass of oxygen = 80.0 g
Mass of hydrogen needed = ?
Solution:
Chemical equation:
2H₂ + O₂ → 2H₂O
Number of moles of oxygen:
Number of moles = mass/molar mass
Number of moles = 80 g/ 32 g/mol
Number of moles = 2.5 mol
now we will compare the moles of oxygen and hydrogen.
O₂ : H₂
1 : 2
2.5 : 2× 2.5 = 5 mol
Mass of hydrogen:
Mass = number of moles × molar mass
Mass = 5 mol × 2 g/mol
Mass = 10 g
2 : Given data:
initial mass ration of chlorine and sodium react with each other = 1.54 g : 1.0 g
Mass of sodium required for 45 g of chlorine = ?
Solution:
Cl₂ : Na
1.54 : 1.0
45 : 1.0/1.54× 45 = 29.22 g
Thus, 29.22 gram of sodium are required.
Answer:
1.209g of MgO participates
Explanation:
In this problem, we have 0.030 moles of MgO that participates in a particular reaction.
And we are asked to solve for the mass of MgO that participates, that means, we need to convert moles to grams.
To convert moles to grams we need to use molar mass of the compound:
<em>1 atom of Mg has a molar mass of 24.3g/mol</em>
<em>1 atom of O has a molar mass of 16g/mol</em>
<em />
That means molar mass of MgO is 24.3g/mol + 16g/mol = 40.3g/mol
And mass of 0.030 moles of MgO is:
0.030 moles MgO * (40.3g/mol) =
<h3>1.209g of MgO participates</h3>