The hydronium ion is H₃O⁺ and its concentration is equivalent to the H⁺ ion concentration. The H⁺ ion concentration is given by:
pH = -log[H⁺]
[H⁺] = 10^(-8.2)
[H⁺] = 6.31 x 10⁻⁹ mole/dm³
The hydronium ion concentration is 6.31 x 10⁻⁹ mole/dm³
Answer:
Speed of vehicle = 500 km/hour
Step-by-step explanation:
Given that:
Distance travel by vehicle = 6,500 km
Time taken by vehicle = 13 hour
Find:
Speed of vehicle in kilometer per hour
Computation:
Speed = Distance / Time
Speed of vehicle = Distance travel by vehicle / Time taken by vehicle
Speed of vehicle = 6,500 / 13
Speed of vehicle = 500 kilometer per hour
Answer:
slope-inercept form: y = 3x + 3 point-slope form: y - 9 = 3(x - 2)
Step-by-step explanation:
slope-intercept form:
y2 - y1 / x2 - x1
9 - (-6)/ 2 - (-3)
= 3
y = 3x + b
9 = 3(2) + b
9 = 6 + b
3 = b
y = 3x + 3
point-slope form:
y - 9 = 3(x - 2)
Answer:
x = 6
Step-by-step explanation:
Line M and line V are parallel so,
Given angles must be alternate angles and alternate angles has equal measurement
so we write an equation to find the value of x:
19x - 4 = 110 add 4 to both sides
19x = 114 divide both sides by 19
x = 6
Answer:
b= 70
Step-by-step explanation:
The sum of the opposite interior angles of a triangle is equal to exterior angle.
a+b = 140
We know that a = b since PQ = RQ The angles opposite the equal sides in an isosceles triangle are equal
b+b = 140
2b =140
Divide by 2
2b/2 =140/2
b= 70
