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
Tresset [83]
3 years ago
14

34. How many hydrogen atoms are in the formula for phosphoric acid? A)2 B)1 C)4 D)3

Chemistry
2 answers:
Serhud [2]3 years ago
8 0

Answer:

D)3

Explanation:

Nookie1986 [14]3 years ago
7 0

Answer:

The answer is D.

Explanation:

Given that the formula for phosphoric acid is H3PO4 so there are 3 Hydrogen, 1 Phosphorus and 4 Oxygen.

You might be interested in
How do I balance this chemical reaction ?
Assoli18 [71]
Ignore my writing answer is in pictute

8 0
3 years ago
Read 2 more answers
how many H+ ions are in a solution with a pH of 2 and how many H+ ions are in a solution with a pH of 6?
LiRa [457]

Answer:

i) pH = 2

pH = -log(H+)

:- (H+) = 10^(-2)

:- (H+) = 0.01 M

ii) pH = 6

pH = -log(H+)

:- (H+) = 10^(-6)

:- (H+) = 0.000001 M

Explanation:

By definition: pH = -log(H+).

Given your pH, solve for the H+ using the the following log rule:

if a = (+/-) log (b) then

b = 10^((+/-) a).

Also remember unit of concentration is molar (M)

3 0
3 years ago
Which ligand binds tightest? ligand A, with a dissociation constant ( Kd ) of 10−9 M ligand D, with a percent occupancy of 80% a
Delvig [45]

Answer:

The answer will be Ligand A with a dissociation constant (Kd) of 10^{-9}M

Explanation:

When the dissociation constant in the ligand is small (in order of nano) ( 10^{-9}) it will be more tied. Due to a dissociation constant measures how much a ligand can be able to be separated from the protein so if the number is small it means that the ligand is highly binded to the protein.

On the other hand, the occupancy percentage of the ligand does not imply binding. Conversely, a High-affinity ligand binding with the proteins implies that a relatively low concentration of a ligand is adequate to occupy the maximum ligand-binding site.

6 0
3 years ago
At 700 K, the reaction2SO2(g) + O2(g) 2SO3(g)has the equilibrium constant Kc = 4.3 x 106, and the following concentrations are p
dedylja [7]

Explanation:

The given reaction is as follows.

       2SO_{2} + O_{2}(g) \rightarrow 2SO_{3}(g)

Value of equilibrium constant is given as K_{c} = 4.3 \times 10^{6}[/tex].

Concentration of given species is [SO_2] = 0.010 M; [SO_3] = 10.M; [O_2] = 0.010 M.

Formula for experimental value of equilibrium constant (Q) is as follows.

             Q = \frac{[SO_{3}]^{2}}{[SO_{2}]^{2}[O_{2}]}

Putting the given concentration as follows.

              Q = \frac{[SO_{3}]^{2}}{[SO_{2}]^{2}[O_{2}]}

             Q = \frac{(10)^{2}}{(0.010)^{2}(0.010)}

              Q = 10^{8}

It is known that when Q > K_{eq}, then reaction moves in the backward direction.

When Q < K_{eq}, then reaction moves in the forward direction.

When Q = K_{eq}, then reaction is at equilibrium.

As, for the given reaction Q > K_{eq} then it means reaction moves in the backward direction.

Thus, we can conclude that the reaction is moving in the backward direction, that is, right to left to reach the equilibrium.

5 0
3 years ago
Which of the following instrument would you use to see a plant cell?
Gemiola [76]
B . microscope
this is the answer .
3 0
3 years ago
Read 2 more answers
Other questions:
  • When lake or ocean waters are anoxic, it means that they __________.
    12·2 answers
  • The metal rhodium (Rh) has an FCC crystal structure. If the angle of diffraction for the (311) set of planes occurs at 36.12° (f
    8·1 answer
  • What is pH?
    8·1 answer
  • What is the speed of an electromagnetic wave with a frequency of 1.33x10^17Hz and a wavelength of 2.25nm?
    12·2 answers
  • How many moles is 118 grams of Argon
    14·1 answer
  • HELPPPPP PLEASE
    14·1 answer
  • What mass of Na2SO4is needed to make 2.5 L of 2.0 Msolution? (Na = 23 g; S = 32 g; O = 16 g)
    13·1 answer
  • How many atoms of hydrogen combine with one carbon atom to form methane
    14·1 answer
  • A compound formed with potassium and bromine that can detect blood in a stain by reacting with it to form distinctive crystals
    6·1 answer
  • A solution with a pH = 13 has approximately how many moles of OH– ions per liter?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!