Hi, I just submitted this, and your answer is a pattern in nature observed over and over.
I hoped I helped you,
Dawn
Answer: Your question is not properly arranged. Please let me assume this to be your question.
A solution of HNO3 is standardized by reaction with pure sodium carbonate. 2HNO3 + Na2CO3 ⟶ 2NaNO3 + H2O + CO2. A volume of 25.36 ± 0.05 mL of HNO3 solution was required for complete reaction with 0.8311 ± 0.0007g of Na2CO3, (FM 105.988 ± 0.001 g/mol). Find the molarity of the HNO3 solution and its absolute uncertainty
THE ANSWERS ARE:
MOLARITY= 0.3092mol/l
ABSOLUTE UNCERTAINTY= 0.000873
Explanation:
CALCULATION FOR MOLARITY:
Molarity= gram mole of solute / liters of solution
Where;
Mole= mass/molar mass
mole= 0.8311g/105.988g/mol= 0.0078515mol
MOLARITY= 0.0078415mol/25.36ml = 0.0003092mol/ml = 0.3092mol/l
CALCULATION FOR ABSOLUTE UNCERTAINTY:
Uncertainty (u) =√({0.05/25.36}^2 + {0.001/105.988}^2 + {0.0007/0.8311}^2) × Molarity
Solving brackets gives
(0.00197161+0.00000943503+0.00084226) ×Molarity
Adding up gives
0.002823×Molarity
Therefore;
ABSOLUTE UNCERTAINTY= 0.002823×0.3092= 0.000873
1. <span>low melting point
2. </span>positive <span>ion
3. </span><span>There are 2 bromine atoms for every magnesium atom.
4. </span><span>The name of the positive ion.
5. </span>Sodium sulfide<span>
6. </span><span>A covalent bond with 2 pairs of shared electrons.
7. </span>valence electrons<span />
Noble gases show degrees of reactivity. These elements have generally complete electron shells. Noble Gases Include: Helium, Neon, Argon, Krypton, Xenon, Radon, Ununoctium. Reactive elements that form compounds known as halides.
Answer:
Force = Mass x Acceleration
12 x 5 = 60
60 Newton’s is your final answer