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Chemistry acid-base question?
For a 0.1mol/L of monoprotic weak acid (HA) at a certain temperature, the ratio between the unionized and ionized molecules is 50:2, find the value of ionization constant (Ka) for the acid, HA.
1 AnswerChemistry2 years agoFactorise the following?
(i) (a-1)^3 -8 + (a+1)^3 +6(a²-1)
(ii) x²-y²-2z²+zx+3yz
3 AnswersMathematics2 years agoIf the function f:R->R satisfies f(2x-1)=5x+2, find f^(-1) (3x+1)?
given answer: (6x-7) /5
3 AnswersMathematics2 years agoWhat's up chemistry?
A saturated calcium hydroxide solution is prepared. 25mL of this solution is titrated with 0.05mol/L hydrochloric acid and 23.75mL are required for completed neutralization. Calculate the solubility product of calcium hydroxide.
1 AnswerChemistry2 years ago
The figure shows the curve represented by the polar equation r=cos 3θ ,0≤θ≤π. Find the area of the region enclosed by the curve?
Answer given is π/4
1 AnswerMathematics2 years agoMath Pro PLs solve?
Given that O is te origin , and the polar coordinates of A and B are (-3, 7π/6) and (5, -π/2) respectively. Find the area of 🔺OAB.
The answer provided = (15√3)/4
2 AnswersMathematics2 years agoIf the length of the tangent from the point (a,1) to the circle x²+y²+5x+7y+3=0 is 5, find the value of a.?
given answer -7 or 2
2 AnswersMathematics2 years agoComplex number math?
Given that z is an imaginary root of the equation x⁵=1 and z≠1, find the value of z+z^2+z^3+z^4.
given answer is -1
7 AnswersMathematics2 years agoCircle (Math)?
A circle with center on the x-axis passes through point A(-1,1) and B(1,3). Find the equation of this circle.
5 AnswersMathematics2 years agoMath Question?
Show that the curve of the equation=3/(2sinθ-cosθ) is a straight line
1 AnswerMathematics2 years agoChemistry experts do you know how to solve this?
If the formula of sulfate of a metal is Rn(SO₄)m. What is the formula of the chloride of R?
4 AnswersChemistry2 years agoMath Question of de moivre's theorem?
Find the principal values of am(4+3i)^(1/3)
(am is amplitude)
2 AnswersMathematics2 years agoMath Experts pls help?
A wire of length 6m is cut to form 15 squares and arranged in order of increasing size. Suppose the difference between the perimeters of any two consecutive squares is 4cm, find the length in cm of the side of the smallest square.
2 AnswersMathematics2 years agoMath Complex numbers?
x^8=1, one root is α=cosπ/4+i sinπ/4. Prove that the roots can be expressed as 1+α+α²+α³+......+α⁷ if can also represent them on Argand diagram .Prove that also 1+α+α²+α³+......+α⁷=0
2 AnswersMathematics2 years ago
