26.25g
Explanation:
Given parameters:
Percentage of NaCl in ocean water = 3.5%
Mass of given seawater = 750g
Unknown:
Mass of NaCl in the seawater = ?
Solution:
This is a simple percentage problem:
We have been given that ocean water contains 3.5% of NaCl;
Therefore;
Mass of NaCl in seawater = Percentage of NaCl in ocean water x Mass of seawater
Mass of NaCl in seawater = 
x 750g = 26.25g
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Explanation:
Advantages of Common Names
The main advantage of using common plant names is ease of usage and common understanding in certain geographical areas and, conversely, the prevention of confusion among the laymen who do not understand Latin
.What are the disadvantages of common names?
These names may not be same every where in all places so in order to have universally similar name.
Creates confusion among different languages.
Cannot identify one particular species by common names.
The ion that will be formed by the selenium atom shown below when it has a stable set of valence electrons is D) Se2-.
Explanation:
i think
Each ion, or atom, has a particular mass; similarly, each mole of a given pure substance also has a definite mass. The mass of one mole of atoms of a pure element in grams is equivalent to the atomic mass of that element in atomic mass units (amu) or in grams per mole (g/mol).
Answer: Adding a reactant will shift the reaction towards the products.
Adding a product will shift the reaction towards the reactants.
Removing a reactant will shift the reaction towards the reactants.
Removing a product will shift the reaction towards the products.
Explanation:
Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.
Adding a reactant will increase the concentration of reactants and hence the reaction will try to undo the increase by shifting the reaction towards the products.
Adding a product will increase the concentration of products and hence the reaction will try to undo the increase by shifting the reaction towards the reactants.
Removing a reactant will decrease the concentration of reactants and hence the reaction will try to undo the decrease by shifting the reaction towards the reactants.
Removing a product will decrease the concentration of products and hence the reaction will try to undo the decrease by shifting the reaction towards the products.
