1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mezya [45]
3 years ago
9

A cup of black coffee has a pH of 5. What is the hydrogen Ion

Chemistry
1 answer:
alexandr1967 [171]3 years ago
8 0
<span>pH = -log(H+ concentration)
so pH = -log(1.0 X 10^4)
</span><span>10^-4?
</span>
If this helped and you have any other questions, feel free to comment on my wall. Hope this helped.
You might be interested in
A chemist wants to develop a fuel by converting water back to elemental hydrogen and oxygen using coupled ATP hydrolysis to driv
Doss [256]

Answer:

Firstly, we need know that:

Energy of a opposite reaction will equal to = (-) energy of forward reaction.

Therefore,

H2(g) +1/2 O2(g) -------------> H2O (g)    ΔfG = -237.13 kJ/mol -----------(1)

ATP + H2O (l) ................. ...........> ADP + Pi   ΔG = -31 kJ/mol   -----------(2)

The first equation can be written as:

H2O -------------------------> H2 +1/2 O2   ΔG = 237.13 kJ/mol -------------(3)

Equation (3) showed the formation of one mole of H2 gas required energy = 237.13 kJ/mol

Equation (2) showed that one mole of ATP on hydrolysis produces energy = 31.0 kJ/mol

Therefore, to get one mole of H2 gas means:

no of moles of ATP required = energy required for H2 production/energy produced by ATP  

= 237.13/31.00

= 7.65 moles

Therefore,  to produce one mole H2 gas = 7.65 moles of ATP is required

So in order to produce 3 moles of H2

= x ATP required for one mole

= 3 x 7.649

= 22.947 moles

Therefore, to produce three mole of H2 = 22.9 moles of ATP.

3 0
3 years ago
Read 2 more answers
A cleaning bottle contains 83.1 g of ammonia. How many molecules of ammonia are in the bottle?
Tasya [4]

Answer:

2.94 x 10^2^4

Explanation:

First we need to find out how many moles of ammonia there are, using the formula: Mass = mr x moles.

We know the mass is 83.1g, now we need to find the mR of ammonia - NH3.

N = 14, H = 1, so 14 + (3x1) = an mr of 17.

Moles = mass/ mr = 83.1/17 = 4.8882

Now we can multiply the moles by avogadro's constant to find the number of molecules:

4.8882 x (6.02 x 10^2^3 ) = 2.94 x 10^2^4 molecules of ammonia

4 0
3 years ago
Number of molecules in lithium sulfate Li2So4​
sertanlavr [38]
What the question there is nun
7 0
2 years ago
(b) If this solution is treated with NaOH, the salt is converted to cocaine. How much more water (L) is needed to dissolve it?
Damm [24]

0.33L more water is needed to dissolve it.

Cocaine is a stimulant substance obtained from the leaves of two Coca species native to South America, Erythroxylum coca and Erythroxylum novogranatense.

<h3>What is a coca?</h3>

Coca is a plant. The leaves of the coca plant are the source of cocaine, which is an illegal that is used nasally, injected, or smoked for mind-altering effects. Cocaine is also an FDA-approved Schedule II . This means cocaine can be prescribed by a healthcare provider, but the process is strictly regulated.

<h3>What happens when you smoke coca leaves?</h3>

The smoking of coca paste causes four distinct successive phases of mental disorder: euphoria, dysphoria, hallucinosis and paranoid psychosis. It can produce severe intoxication, prolonged or relapsing psychosis and, in some cases, end of life.

Learn more about cocaine here:

<h3>brainly.com/question/944545</h3><h3 /><h3>#SPJ4</h3>
7 0
1 year ago
Which component is soluble in water
Vesna [10]

Answer:

salt

Explanation:

6 0
3 years ago
Other questions:
  • How many moles of cl is produced from Al + 3NH4ClO4 → Al2O3 + AlCl3 + 3NO + 6H2O?
    9·1 answer
  • What was a direct result of the Bay of Pigs invasion
    10·1 answer
  • A Series of choices between two characteristics that is used to identify an organism is called a
    10·1 answer
  • Answer the ones I have not. Thanks!
    9·2 answers
  • 39. Period is the force of attraction between objects resulting in objects pulling towards each
    13·1 answer
  • What is DNA?I am so confused please help!
    12·2 answers
  • What material was added to powdered rock during tuttle and bowen's experiments?
    10·1 answer
  • El agua del mar contiene aproximadamente un 3,0 % m/v de sal (NaCl, 58,44 g/mol), (asuma que es la única fuente de cloruros) si
    5·1 answer
  • Help on another one pls ‍♂️!
    15·1 answer
  • How many sodium atoms does 3Na2S2O3 have?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!