Answer:
The bottom left
Step-by-step explanation:
In scientific notation, the answer is 3.5*10^-6 .
I hope that this helps
1.326 grams of NH3 are required to produce 4.65 g of HF.
Step-by-step explanation:
Balanced chemical reaction is written first to know the number of moles taking part in original reaction.
NH3 +3 F2 ⇒3 HF + NF3
Given:
mass of HF = 4.65
First the number of moles of HF in 4.65 grams is calculated by using the formula:
number of moles (n) = 
atomic mass of HF = 20 grams/mole
putting the values in the above equation number of moles can be found.
n = 
= 0.235 moles of HF are given.
From the equation it can be said that:
1 mole of NH3 reacts to form 3 moles of HF
so, x moles of NH3 would react to form 0.235 moles of HF
= 
3x = 0.235
x = 
x = 0.078 moles of NH3 is required.
The moles are converted to mass by applying the formula:
mass = atomic mass X number of moles (atomic mass of NH3 = 17 grams/mole)
putting the values in the formula
mass = 17 X 0.078
mass = 1.326 grams
Answer:
arithmetic
Step-by-step explanation:
an arithmetic sequence is a sequence that moves up or down at a constant rate and the constant is 3
Answer:
12 inches × 12 inches × 12 inches
Step-by-step explanation:
Cube volume is 

![s=\sqrt[3]{1728}](https://tex.z-dn.net/?f=s%3D%5Csqrt%5B3%5D%7B1728%7D)
