Answer:
Bats eat hundreds of mosquitoes and other annoying insects at night.
The theoretical yield of HCl produced is 56.06 grams of HCl
<u><em>calculation</em></u>
BCl₃(g) +3 H₂O(l) → H₃BO₃(s) + 3 HCl(g)
Step 1: find the moles of each reactant
moles = mass÷molar mass
moles of BCl₃ = 60.0 g÷117.16 g/mol =0.512 moles
moles of H2O = 37.5 g ÷18 g/ mol = 2.083 moles
Step 2: use the moles ratio to determine the limiting reagent
from the equation above BCl₃ :HCl is 1:3 therefore the moles of HCl = 0.512 moles x 3/1 =1.536 moles
H2O :HCl is 3:3 = 1:1 therefore the moles of HCl is also 2.083 moles
Bcl₃ is the limiting reagent since it produces less amount of HCl therefore the moles HCl is 1.536 moles
Step 3 ; find the theoretical yield
The theoretical yield = moles x molar mass
from periodic table the molar mass of HCl = 1+ 35.5= 36.5 g/mol
Theoretical yield= 1.536 moles x 36.5 g/mol =56.06 g of Hcl
I think the answer is approximately 4.12 billion years since the amount of years is 4.543 billion years
Answer:
By increasing the pressure, the molar concentration of N2O4 will increase
Explanation:
We have the equation 2NO2 ⇔ N2O4
This equation is reversible and exotherm. By <u>decreasing the temperature</u>, the reaction will produce more energy, so the reaction will move to the right. But a lower temperature also lowers the rate of the process, so, the temperature is set at a compromise value that allows N2O4 to be made at a reasonable rate with an equilibrium concentration that is not too unfavorable
So <u>increasing the temperature</u> will shift the equilibrium to the left. The equilibrium shifts in the direction that consumes energy.
If we d<u>ecrease the concentration of NO2</u>, the equilibrium will shift to the left, resulting in forming more reactants.
To increase the molar concentration of the product N2O4, we have to <u>increase the pressure</u> of the system.
NO2 takes up more space than N2O4, so increasing the pressure would allow the reactant to collide more form more product.
By increasing the pressure, the molar concentration of N2O4 will increase
Answer:
A tropism is a turning toward or away from a stimulus in the environment. Growing toward gravity is called geotropism. Plants also exhibit phototropism, or growing toward a light source. This response is controlled by a plant growth hormone called auxin.
Explanation: