Equation for a dilution :
C₁ x V₁ = C₂ x V₂
4.0 x V₁ = 2.5 x 4.5
4.0 x V₁ = 11.25
V₁ = 11.25 / 4.0
V₁ = 2.8 L
hope this helps!
If the uncertainty of a certain measurement instrument is not given, then it is assumed to be equal to half of the least count of that instrument. In this case, the least count is 10 ml, so half of this is 5 ml. Therefore, the graduated cylinder has an uncertainty of +/- 5 ml
1. If horizontal layers of sedimentary rock have a vertical fault running through them, then they cab predict where the fault begame by <span>matching up rock layers over distances.
2. Yes, because they it is use to </span><span>determine an age on a specified chronology in archaeology and geology. They can use these data to prove their theories.</span>
Answer:
COCl species is an intermediate in the mechanism.
Explanation:
Intermediates are those chemical species which only appears for a short time in a course of a chemical reaction. They act as product and reactant during the reaction. Also they do not appear in overall chemical reaction.
Step 1: 
Step 2: 
Step 3: 
Overall reaction :
As we can see that all the chemicals are present in the overall reaction beside COCl.
COCl species is an intermediate in the mechanism.
Answer:
Mass = 132 g
Explanation:
Given data:
Mass of CO₂ formed = ?
Mass of C burnt = 36 g
Solution:
Chemical equation:
C + O₂ → CO₂
Number of moles of carbon:
Number of moles = mass/molar mass
Number of moles = 36 g/ 12 g/mol
Number of moles = 3 mol
now we will compare the moles of carbon and carbon dioxide.
C : CO₂
1 : 1
3 : 3
Mass of CO₂:
Mass = number of moles × molar mass
Mass = 3 mol × 44 g/mol
Mass = 132 g
