The hydronium ion concentration of your gastric fluid is 1.0 x 10^-2. you drink a tablespoon of milk of magnesia, which raises the ph of the fluid by one unit. what is the resulting concentration of hydroxide ions in the fluid
Answers
Answer:
[OH⁻] = 1 × 10⁻¹¹ mol/dm³
Explanation:
Since the hydronium ion concentration of the gastric fluid is [H₃O]⁺ = 1.0 × 10⁻².
The pH at this point is pH = -log₁₀[H₃O]⁺ = -log₁₀[1.0 × 10⁻²] = 2
When milk of magnesia is added, the pH increases by one unit, so the new pH is 1 + 2 = 3
Since pH + pOH = 14, then pOH = 14 - pH = 14 - 3 = 11
The hydroxide ion concentration of the fluid is gotten from
pOH = -log₁₀[OH⁻]
11 = -log₁₀[OH⁻]
-11 = log₁₀[OH⁻]
taking antilog
[OH⁻] = 1 × 10⁻¹¹ mol/dm³
Answer:
1 × 10^-11 units.
Explanation:
Given:
[H+] = 1 × 10^-2
pH = - log [H+]
= -log [1 × 10^-2]
= 2
The question further said, "which raises the ph of the fluid by one unit"
pH(new) = 2 + 1
= 3
pH + pOH = 14
pOH = 14 - 3
= 11
pOH = - log [OH-]
[OH-] = 10^-11
= 1 × 10^-11 units
Related Questions
Write the equation of the line that has an undefined slope and passes through the point (4, 7). User: What is the slope of a line that is parallel to the x-axis? User: What is the slope of the line that passes through the points (-3, 5) and (1, 7)? User: Which of the following equations is the translation 2 units left of the graph of y = |x|?
A 10,000-kg railroad car travels down the track at 30 m/s and hits a second stationary railroad car of 20,000 kg. The cars become coupled and continue traveling. Calculate the final velocity of the cars.
Fusion occurs in the _______ of the Sun, where the pressure and temperature are very high.
If a wave has a frequency of 8hz it has a period of
Answers
The correct answer is:
Alpha particles bouncing off gold foil
Explanation:
The nuclear model. Atoms contain three sub-atomic particles termed protons, neutrons, and electrons. The protons and neutrons are determined in the nucleus at the center of the atom. The nucleus is surprisingly much less than the atom as a whole. The Rutherford Gold Foil Experiment conceded the first empirical confirmation that guided to the development of the nucleus of the atom as a small, dense, and positively charged atomic core.
The nuclear model of atom was given by Rutherford. As per this model,the central part of every atom is a massive positive core, and it occupies the total mass of the atom .Around the nucleus, there are orbits in which electrons are revolving just like planets are revolving around the sun.
This evidence was provided by Rutherford's gold foil experiment.
As per this experiment, some alpha particles were deviated at an angle less than 90 degree when allowed to fall on a gold foil.Some alpha particles were deviated more than 90 degree.
One alpha particle out of 10000 particles directly retraced its path back i.e it was deviated at angle of 180 degree.
It is so because alpha particle is positively charged. The alpha particle will be deviated if it will suffer a repulsive force. Hence, the central part of atom is positively charged. As alpha particle comes back, it means the central part is very massive.
Answers
The product of voltage times amperage
The product of resistance times voltage
Resistance divided by voltage
Answers
Answer:
which corresponds to the second option shown: "voltage times amperage"
Explanation:
The electric power is the work done to move a charge Q across a given difference of potential V per unit of time.
Since such electrical work is the product of the potential difference V times the charge that moves through that potential, and this work is to be calculated by the unit of time, we need to divide the product by time (t) which leads to the following final simple equation:
Notice that we replaced the quotient representing charge per unit of time (Q/t) by the actual current running through the circuit.
This corresponds to the second option shown in the question: "Voltage times amperage".
Answer:
The product of voltage times amperage
Explanation:
I took the test and got it right
Answers
1). EVERY transmitted radio signal is transmitted as
a divergent beam. We don't have the technology to
transmit it as a perfectly parallel beam.
That's a good thing, because ...
2). If it were a perfect pencil-thin parallel beam, then
it would be practically impossible to keep it perfectly
aimed at the satellite.
Answers
B