All categories

3 years ago

How many times more acidic is solution A with a pH of 3.4 than solution B with a pH of 8.4?

Physics

1 answer:

jeka943 years ago

8 0

Answer:

Solution A is 1 x 10⁵ times more acidic than solution B

Explanation:

The pH scale is a logarithmic scale used to express the acidity or basicity of a solution.

The values are written from 1 - 14 with 1 being the most acidic and 14 a basic solution.

Each interval is ten folds more concentrated than the next because it is a logarithmic scale.

Since the pH of A = 3.4

pH of B = 8.4

The difference = 8.4 - 3.4 = 5.0

So, Solution A is 1 x 10⁵ times more acidic than solution B

You might be interested in

A net force of 10.0 N causes an object to accelerate at 2.00m/s^2. What is the mass of the object?

madam [21]

5.00kg

random = abcdefghijklmnopqrstuvwxyz

4 0

3 years ago

What is the temperature outside of a tree?

ozzi

About 21c because it also depends on the weather outside

7 0

3 years ago

Energy Conservation With Conservative Forces: If a spring-operated gun can shoot a pellet to a maximum height of 100 m on Earth,

crimeas [40]

Answer:

h' = 603.08 m

Explanation:

First, we will calculate the initial velocity of the pellet on the surface of Earth by using third equation of motion:

2gh = Vf² - Vi²

where,

g = acceleration due to gravity on the surface of earth = - 9.8 m/s² (negative sign due to upward motion)

h = height of pellet = 100 m

Vf = final velocity of pellet = 0 m/s (since, pellet will momentarily stop at highest point)

Vi = Initial Velocity of Pellet = ?

Therefore,

(2)(-9.8 m/s²)(100 m) = (0 m/s)² - Vi²

Vi = √(1960 m²/s²)

Vi = 44.27 m/s

Now, we use this equation at the surface of moon with same initial velocity:

2g'h' = Vf² - Vi²

where,

g' = acceleration due to gravity on the surface of moon = 1.625 m/s²

h' = maximum height gained by pellet on moon = ?

Therefore,

2(1.625 m/s²)h' = (44.27 m/s)² - (0 m/s)²

h' = (1960 m²/s²)/(3.25 m/s²)

4 0

3 years ago

The demand equation for the Roland portable hairdryer is given as follows where x (measured in units of a hundred) is the quanti

lesya [120]

Answer:

Explanation:

The concept of elastic and inelastic demand is applied.

for an elastic demand, the elasticity must be greater than 1 and for an Inelastic demand, the elasticity must be less than 1.

The steps and appropriate calculation is as shown in the attached file.

6 0

3 years ago

A 1.00 kg object is attached to a horizontal spring. the spring is initially stretched by 0.500 m, and the object is released fr

valina [46]

The spring is initially stretched, and the mass released from rest (v=0). The next time the speed becomes zero again is when the spring is fully compressed, and the mass is on the opposite side of the spring with respect to its equilibrium position, after a time t=0.100 s. This corresponds to half oscillation of the system. Therefore, the period of a full oscillation of the system is
$T=2 t = 2 \cdot 0.100 s = 0.200 s$
Which means that the frequency is
$f= \frac{1}{T}= \frac{1}{0.200 s}=5 Hz$
and the angular frequency is
$\omega=2 \pi f = 2 \pi (5 Hz)=31.4 rad/s$

In a spring-mass system, the maximum velocity of the object is given by
$v_{max} = A \omega$
where A is the amplitude of the oscillation. In our problem, the amplitude of the motion corresponds to the initial displacement of the object (A=0.500 m), therefore the maximum velocity is
$v_{max} = A \omega = (0.500 m)(31.4 rad/s)= 15.7 m/s$

6 0

3 years ago