Avogardo's number is a constant, named after the scientist Amedeo Avogadro that represents the number of molecules or atoms that are contained in the amount of substance given by one mole.<span> Na= 6.022×10</span><span>23
Mole on the other hand is </span> a chemical mass unit,defined to be 6.022 x 1023 molecules<span>, </span>atoms, or some other unit. This is the reason why t<span>he mole and Avogadro’s number are now almost synonymous with each other. </span>
Answer:
The Density of the cube of metal is 2.675g/mL or 2675kg/mL.
Explanation:
Given the following data;
Mass of metal = 1.45kg to gram (g) = 1.45 × 1000 = 1450g
Volume of the cube of metal = 542mL
Density = ?
Density can be defined as mass all over the volume of an object.
Simply stated, density is mass per unit volume of an object.
Mathematically, density is given by the equation;
Substituting into the equation, we have;
<em>Density = 2.675g/mL</em>
In kilograms, the density is 2.675 x 1000 = 2675kg/mL.
Answer:
Liquid, definite volume but no definite shape.
Explanation:
Answer:
.
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Explanation:
Hello,
In this case, since the ionization of methylamine is:
The equilibrium expression is:
And in terms of the reaction extent which is equal to the concentration of OH⁻ as well as that of CH₃NH₃⁺ via ice procedure we can write:
Whose solution for via quadratic equation is 9.24x10⁻³ M since the other solution is negative so it is avoided. Therefore, the concentration of OH⁻ is:
With which we can compute the pOH at first:
Then, since pH and pOH are related via:
The pH turns out:
Best regards.
Answer:
Mg(OH)₂(s) + 2HCl(aq) ----> MgCl₂(aq) + 2H₂O(l)
Explanation:
Magnesium hydroxide is a white solid that is sparingly soluble in water. It is a basic hydroxide, therefore it neutralizes acids to form salt and water.
Magnesium hydroxide commonly used as an antacid, for example milk of magnesia, because it reduces stomach acid, and increases water in the intestines which may induce bowel movements. It also relieves indigestion, sour stomach, and heartburn. Magnesium hydroxide is also used as a laxative to relieve occasional constipation.
The equation for the reaction between magnesium hydroxide and stomach acid, HCl, is as follows:
Mg(OH)₂(s) + 2HCl(aq) ----> MgCl₂(aq) + 2H₂O(l)