Answer:
The answer is the troposphere
Explanation:
It is the closest to earth
Answer: The value of 
for this reaction is 250000.
Explanation:
The given equation is as follows.
... (1)
... (2)
To balance the atoms, multiply equation (2) by 3. Hence, the equation (2) can be re-written as follows.
... (3)
Now, subtract equation (1) from equation (3). So, the equation formed will be as follows.
This equation can also be re-written as follows.
This equation is similar to the equilibrium equation given to us.
Therefore, during this subtraction the equation constants get divided as follows.
Thus, we can conclude that the value of for this reaction is 250000.
We have to calculate the molar mass of AL(OH)₃
Atomic mass (Al)=27 amu
Atomic mass (O)=16 amu
Atomic mass (H)=1 amu
molecular weight= 27 amu+3(16 amu + 1 amu) =78 amu.
Therefore, the molar mass of Al (OH)₃ is 78 g/ mol
Now, we calculate the number of moles in 98.3 g of aluminum hydroxide.
78 g-------------------1 mol
98.3 g----------------- x
x=(98.3 g * 1 mol) / 78 g=1.26 moles.
Answer: 1.26 moles.
Answer:
3.39 g.mL⁻¹ or 3.39 g.cm⁻³
Solution:
Data Given:
Mass of Pellet = 12.4 g
Volume of Pellet = 13.65 mL - 10.00 mL = 3.65 mL
Density = ?
Formula Used,
Density = Mass ÷ Volume
Putting values,
Density = 12.4 g ÷ 3.65 mL
Density = 3.39 g.mL⁻¹ or 3.39 g.cm⁻³
Answer:
B. metalloids
Explanation:
The metalloids are found between metals and non-metals on the periodic table.
Metalloids have properties between those of metals and non-metals. Under certain prevalent conditions, they exhibit a set of properties.
- Synthetic substances are those artificially made, they are not found on the periodic table.
- Noble gases are found in the last group on the periodic table.
- Radioactive substances are found in the lanthanide and actinide series.
