Answer:
Solid/freezing
Explanation:
Solid has the least energy of all of the phase changes and the more energy is lost the colder its gets then water turns into a solid called ice hope i helped!
Answer:
Knowledge of facts
Explanation:
All of these are inherited traits: Color, Height, and Shape
but Knowledge is a learnt trait
<u>Answer:</u> The molar mass of the sample is 120.6 g/mol
<u>Explanation:</u>
To calculate the depression in freezing point, we use the equation:
Or,
where,
= depression in freezing point = 0.42°C
i = Vant hoff factor = 1 (For non-electrolytes)
= molal freezing point elevation constant = 5.065°C/m
= Given mass of solute (sample) = 0.500 g
= Molar mass of solute (sample) = ? g/mol
= Mass of solvent (benzene) = 50.0 g
Putting values in above equation, we get:
Hence, the molar mass of the sample is 120.6 g/mol
Answer:
9.3 × 10²³ molecules
Explanation:
Given data:
Mass of methane = 24.7 g
Number of molecules = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
For 24.7 g methane:
Number of moles = mass/ molar mass
Number of moles = 24.7 g/ 16.04 g/mol
Number of moles = 1.54 mol
1 mole = 6.022 × 10²³ molecules
1.54 × 6.022 × 10²³ molecules
9.3 × 10²³ molecules
Answer:
Explanation:
A garlic allergy is rare. If you're allergic to garlic, you can be allergic to cooked or raw garlic, or to all forms. A garlic allergy is caused when your body's immune system mistakenly identifies garlic as being harmful and produces antibodies in an attempt to fight it off. Does this help?
