It’s A. Random!! I looked it up!
Answer:
A = water is an excellent solvent.
Explanation:
What is solvent:
Solvent is the that part of solution which is present in large proportion and have ability to dissolve the solute.
Explanation:
In simplest form solvent is something in which other substance get dissolve. The most widely used solvent is water, other examples are toluene, acetone, ethanol, chloroform etc.
Water is called universal solvent because of high polarity all polar substance are dissolve in it. Hydrogen is less electronegative while oxygen is more electronegative and because of difference in electronegativity hydrogen carry the partial positive charge while oxygen carry partial negative charge.
Water create electrostatic interaction with other polar molecules. The negative end of water attract the positive end of polar molecules and positive end of water attract negative end of polar substance and in this way polar substance get dissolve in it.
Example:
The minerals and nutrients in our body dissolved in water and transported through out the body.
Number of Moles are calculate by using following formula,
Moles = Mass / M.mass --- (1)
M.mass is calculated by adding the atomic masses of all elements present in molecule, Since, MgCl₂ contains one Mg (atomic mass = 24.3 g/mol) and two Cl atoms (atomic mass = 35.45 × 2 = 70.9 g/mol), So,
Molar mass = 24.3 g/mol + 70.9 g/mol
Molar Mass of MgCl₂ = 95.2 g/mol
Now, putting values in eq. 1,
Moles = 310 g ÷ 95.2 g/mol
Moles = 3.256 moles
<span>Homologous (This means they are the same chromosome from each parnet, matched together) </span>
<span>Answer: prevent transmission across the synaptic cleft
When the poison binds to the </span>neurotransmitter receptors <span>on the dendrites, it will block the receptors. The neurotransmitter cannot bind to the blocked receptors, making it unable to work. The poison should cause paralyzing effect because the signal cannot be sent.
One of the toxins that work this way is curare.</span>
