Answer:
its b , Symmetrical and nonpolar
Explanation:
Answer: -
236 g
Explanation: -
Solubility of KCl = 95 g/ dm³
Volume of the water = 200 cm³ = 
= 0.2 dm³
Amount of KCl dissolved = Volume of the water x Solubility
= 0.2 dm³ x 95 g/ dm³
= 19 g
Mass of water taken = 217 g
Total mass of solution = Mass of water + Amount of KCl dissolved
= 217 g + 19 g
= 236 g
Answer:
The percentage of germanium in germatite is 6.0003%.
Explanation:
Mass of an ore of germanite = 1.00 grams
Mass of germanium chloride = 0.177 grams
Percentage of germanium in germanium chloride = 33.9%
Let the mass of germanium present in germanium chloride be x.
Percentage of an element in a compound:
x = 0.060003 grams
Percentage of germanium in an ore of germanite:
The percentage of germanium in germatite is 6.0003%.
One
Balance the Equation.
This has been done for you or it is given. Anyway this step is finished, but it must always be done.
Two
Find the molar mass of C6H12O6
6C = 6 * 12 = 72
12H = 12*1 = 12
CO = 6 * 16 = 96
Mol Mass = 180 grams / mol
Three
Find the mols of C6H12O6
n = ???
Molar Mass = 180 grams / mol
given mass = 13.2 grams.
n = given mass / molar mass
n = 13.2 / 180
n = 0.07333333 mols.
Four
Find the mols CO2
1 mol C6H12O6 will produce 6 mols CO2
0.0733333 mols will produce x
1/0.073333 = 6/x Cross multiply
x = 0.073333 * 6
x = 0.4399 moles.
Five
Find the volume given the conditions for temperature and pressure are STP conditions.
PV = nRT
R = 0.082057
n = 0.43999
P = 1 atmosphere
T = 0 + 273 = 273
V = ???
1 * V = 0.43999 * 082057 * 273
V = 10.2 L
Answer: B
Note if you give out Brainly awards I'd sure appreciate one. This was a lot of typing
Answer:
1.26 x 10⁸pm³ and 1.26 x 10⁻²²cm³
Explanation: Calculating for a body centered cubic lattice, the formula is
3d²= 16r²
where d = edge length of unit cell
r=radius of atom
3d²= 16 x (217)²
3d²=753424
d²=251141.3
d= 501.1pm
volume of unit cell= d³= (501.1)³= 1.26 x 10⁸pm³
converting to cm³= 1.26 x 10⁸(10⁻¹²m)³
=1.26 x 10⁸(10⁻¹⁰cm)³ = 1.26 x 10⁻²²cm³
