The correct answer is A. Extensive, quantitative
Explanation:
A property is classified as extensive if it varies with the amount of the substance; this applies to mass, which is measured in grams or kilograms, because depending on the size of the sample the mass changes, therefore "69.2 kg" is an extensive characteristic. Besides this, quantitative characteristics or properties are those that can be measured through numbers; this also applies to mass because a specific number of grams or kilograms shows the exact mass in the substance, in this case, the value is 69.2 kg. Thus, this characteristic is both extensive and quantitative.
Answer:
The total mass of the solution = 99.7 g
Note: The question is incomplete. The complete question is given below:
<em>A "coffee-cup" calorimetry experiment is run for the dissolution of 2.5 g of lithium nitrate placed into 97.2 mL of water. The temperature of the solution is initially at 23.5oC. After the reaction takes place, the temperature of the solution is 28.3 oC. </em>
<em>1. Using a density of 1.0 g/mL for the water added and adding in the mass of the lithium nitrate, what is the total mass of the solution and solid?</em>
Explanation:
mass = density * volume
density of water = 1.0 g/mL; volume of water = 97.2 mL
mass of water = 1.0 g/L * 97.2 mL
mass of water = 97.2 g
mass of lithium nitrate = 2.5 g
A solution is made by dissolving a solute (usually solid) in a solvent (usually a liquid). The solute in this reaction is lithium nitrate and the solvent is water.
Total mass of solution = mass of water + mass of lithium nitrate
Total mass of solution = 97.2 g + 2.5 g = 99.7 g
Therefore, total mass of the solution = 99.7 g
Answer:
All noble gases.
Helium (He), neon (Ne) , argon (Ar) , krypton (Kr ), xenon (Xe), radon (Rn)
Explanation:
All noble gases have complete outer shells.These are six elements Helium (He), neon (Ne) , argon (Ar) , krypton (Kr ), xenon (Xe), radon (Rn). These all are non reactive and stable.
Electronic configuration of Helium.
He₂ = 1s²
Electronic configuration of neon.
Ne₁₀ = [He] 2s² 2p⁶
Electronic configuration of argon.
Ar₁₈ = [Ne] 3s² 3p⁶
Electronic configuration of krypton.
Kr₃₆ = [Ar] 3d¹⁰ 4s² 4p⁶
Electronic configuration of xenon.
Xe₅₄ = [Kr] 4d¹⁰ 5s² 5p⁶
Electronic configuration of radon.
Rn₈₆ = [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁶
we can see in case of all element the outer shell is complete.
Answer:
Mass fraction: 73,6% n-hexane; 26,4% dichloromethane
Mole fraction: 73,0% n-hexane; 27,0% dichloromethane
Explanation:
With a basis of 100 mL:
Mass of n-hexane:
85 mL × = 55,7 g
Mass of dichloromethane
15 mL × = 20,0 g
Total mass = 20,0 g + 55,7 g = 75,7 g
Mass fraction of n-hexane:
=73,6%
Mass fraction of dichloromethane:
= 26,4%
Moles of n-hexane:
55,7 g × = 0,65 moles
Mass of dichloromethane
20,0g × = 0,24 moles
Total moles: 0,65 moles + 0,24 moles = <em>0,89 moles</em>
Molar fraction of n-hexane:
=73,0%
Molar fraction of dichloromethane:
= 27,0%
I hope it helps!
Divergent boundaries and convergent boundaries are the opposite processes that occurs in the tectonic plates.
<h3>Difference between Divergent and convergent boundaries </h3>
Divergent boundaries are the regions where new crust is formed when the plates pull away from each other while on the other hand, Convergent boundaries are the regions where crust is destroyed when one plate dives over another.
So we can conclude that Divergent boundaries and convergent boundaries are the opposite processes that occurs in the tectonic plates.
Learn more about tectonic plate here: brainly.com/question/1162125