Answer:
Molarity for the solution is 1.48 M
Explanation:
Molarity involves the moles of solute that are contained in 1L of solution. It is a sort of concentration. The most usual.
7.73 by mass involves the mass of solute that are contained in 100 g of solution, so this one of ethylene glycol contains 7.73 g of it.
Let's determine the moles of solute
7.73 g / molar mass of ethylene glycol = moles
7.73 g / 62 g/mol = 0.124 mol
If the mass of solution is 100 g, we can determine the volume with density.
Density = Mass / Volume
Volume = Mass / Density
Volume = 100 g / 1.19 g/mL = 84.03 mL
In conclusion, 0.124 moles are contained in 84.03 mL
Molarity is mol/L, so let's convert the volume in L
84.03 mL . 1L / 1000 mL = 0.08403 L
0.124 mol / 0.08403 L = 1.48 M
Methanol or <span>methyl alcohol</span>
Answer:
Heat up.
Explanation:
The faster molecules move the warmer an object becomes.
For example boiling water, when you boil water the water molecules will be moving extremely fast.
The slower molecules move, the colder an object is. For example an ice cube. All the molecules are only vibrating.
Hope this helps:)
Answer:
(1) Chloroplast
Explanation:
Cells of living organisms are made up of certain function-specific structures called ORGANELLES. Some organelles are present in plant cells and absent in animal cells and vice versa. In a plant cell, one notable organelle that allows it perform the photosynthetic process is the CHLOROPLAST.
However, the chloroplast is predominantly found in the LEAF part of a plant. This is because leaf cells are the site of photosynthesis. Hence, according to this question, Joe would be able to tell whether the plant cell was from the leaf or the root by looking for CHLOROPLAST as a differentiating factor in each cell.
