Answer:
Reaction rate is increased by an increase in kinetic energy
of the reacting particles when their
is _temperature_
increased
A . Collision theory
B . Surface Area
C . Temperature
D. Concentration
The recessive allele is the short pea plant gene.
The dominant allele is the tall pea plant gene
Answer:
77.98 g/mol ≅ 78.0 g/mol.
Explanation:
- The molar mass of any compound can be calculated by the sum of the atomic masses of different atoms in the compound multiplied by its no. in the compound.
Molar mass of Al(OH)₃ = (Atomic mass of Al) + 3(Atomic mass of O) + 3(Atomic mass of H)
Atomic mass of Al = 26.98 g/mol. & Atomic mass of O = 16.0 g/mol & Atomic mass of H = 1.0 g/mol.
<em>∴ Molar mass of Al(OH)₃</em> = (26.98 g/mol) + 3(16.0 g/mol) + 3(1.0 g/mol) = <em>77.98 g/mol ≅ 78.0 g/mol.</em>
Answer:
The formula of ammonium fluoride is NH4F.
Explanation:
1 The atoms in each ion are bonded together covalently to form a single unit.
Wrong!
⇒ The atoms in an ion compound are linked together by an ionic bond.
2 The charge is distributed over the entire ion.
Wrong!
Ions have taken in or given up electrons. This happens in the atomic shell.
3 The formula of ammonium fluoride is NH4F.
Right!
4 The formula of potassium sulfate is K2SO
Wrong!
The formula for potassium sulfate is K2SO4.
The molarity of the aqueous acid solution : 0.0101 M
<h3>Further explanation </h3>
Titration is a procedure for determining the concentration of a solution by reacting with another solution that is known to be concentrated (usually a standard solution). Determination of the endpoint/equivalence point of the reaction can use indicators according to the appropriate pH range
Acid-base titration formula
Ma. Va. na = Mb. Vb. nb
Ma, Mb = acid base concentration
Va, Vb = acid base volume
na, nb = acid base valence (amount of H⁺, OH⁻)
Va=12.5 ml
na = 2 (H₂SO₄⇒2H⁺+SO₄²⁻⇒2 ion H⁺)
Mb=0.015
Vb=16.8 ml
nb = 1(LiOH⇒Li⁺+OH⁻⇒1 ion OH⁻)
The molarity of the acid(Ma) :
![\tt Ma\times 12.5\times 2=0.015\times 16.8\times 1\\\\Ma=\dfrac{0.015\times 16.8\times 1}{12.5\times 2}\\\\Ma=0.0101](https://tex.z-dn.net/?f=%5Ctt%20Ma%5Ctimes%2012.5%5Ctimes%202%3D0.015%5Ctimes%2016.8%5Ctimes%201%5C%5C%5C%5CMa%3D%5Cdfrac%7B0.015%5Ctimes%2016.8%5Ctimes%201%7D%7B12.5%5Ctimes%202%7D%5C%5C%5C%5CMa%3D0.0101)