Answer: higher,because when salt is dissolved bonds form between the salt ions and the water molecules
Answer:
The correct answer is - alpha particle and positron.
Explanation:
In this question, it is given that, 38^88Sr decays to 34^84Kr, which means there is an atomic number decrease by 4, 38 to 34, and atomic mass decreases by 4 as well 88 to 84.
A decrease in the atomic mass is possible only when there is an emission of the alpha particle as an alpha particle is made of 2 protons and 2 neutrons. If an atom emits an alpha particle, there is a change in atomic number as it decreases by two, and its mass number decreases by four.
So after the emission of an alpha particle, the new atom would be
38^88Sr=> 36^84X => 34^84Kr
so there is also two positron emission that leads to decrease in atomic number by one with each emission:
38^88Sr=> 2^4He+ 36^84X => 36^84X + 2(1^0β+) => 34^84Kr
Positron decay is the conversion of a proton into a neutron with the emission of a positron that causes the atomic number is decreased by one, which causes a change in the elemental identity of the daughter isotope.
Explanation:
A and D
A. A pressure equal to that of the osmotic pressure will result in reverse osmosis.
D. The movement of the solvent particles from the concentrated solution to the dilute solution is known as reverse osmosis.
During osmosis, water molecules from the less concentrated right side, will flow into the left side til they equilibrate- at equilibrium both sides will have the same concentration of solute.
Thus, the water passes through the membrane due to the difference in osmotic pressure/ solute concentration on either side of the membrane, this means that the water moves from regions of high osmotic pressure/concentration to regions of low osmotic pressure /concentration.
Water potential equal to the pressure potential shifts the equilibrium, resulting in the movement of solute.
<h3> φ= φs+φp</h3>
However, in reverse osmosis, solute molecules move from regions of high solute concentration, to regions of low solute concentration across the membrane.
Learn more about membrane components at brainly.com/question/1971706
Learn more about osmosis at brainly.com/question/5825825
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1 mole = 70.9
X mole = 140
X=1.9746 moles
X= 1.98 when rounded to 3 significant figures.
