Answer:
1 mol contains 6.022*10^23 molecules 0.36 moles contain 0.36 * 6.022*10^23 = 2.2 *10^23 molecules
Explanation:
Answer:
The three major types of bond are ionic, polar covalent, and covalent bonds. Ionic occurs majorly between metals and non-metals, which allows sharing of electrons to form an ionic compound. Whereas covalent bonding calls for complete transfer of electrons between atoms. Polar covalent bonds have unequaly shared electron-pair between two atoms.
Explanation:
a. Cu (Copper)-<em> ionic bonding
</em>
b. KCl (Potassium Chloride)
- <em>ionic bonding
</em>
c. Si (Silicon)
- <em>covalent bonding
</em>
d. CdTe (Cadmium Telluride)
- <em>polar covalent bonding
</em>
e. ZnTe (Zinc Telluride)- <em>polar covalent bonding
</em>
Heterogeneous mixtures are made of different substances that remain physically seperate. An example would be mixing sand and sugar together.
the answer would be soil
The answer is B soil
<em>Answer:</em>
<em>242 gram</em> of HF will be required for complete rex.
<em>Balance chemical equation:</em>
SiO2 + 4HF → SiF4 + 2H2O
<em>Data given</em>
mass of SiO2 = 182g
molar mass of SiO2=60.08
moles of SiO2 = mass/molar mass = 182/60.08 =3.02 moles
From balance chemcial equation
SiO2 : HF
1 : 4
3.02 = 4 × 3.02 = 12
mass of HF= no. of moles × molar mass
mass of HF = 12.08×20 =<em> 242 g</em>
Alright, in a solid, the particles are tightly packed together in an orderly manner and they only vibrate about in fixed positions. in order to overcome the forces of attraction, heat must be applied. example you want to melt iron to molten state, you must heat it up until the forces of attraction in between the particles weaken so that they'll become so called molten *liquid(?)*. in the molten state the particles are still packed closely together but not a tightly as in solid and they have no regular arrangement and the particles slide past one another.
I hope this helps sorry that it's long