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lawyer [7]
3 years ago
6

Which conjugate pair is suited best to make this buffer? Which conjugate pair is suited best to make this buffer? Phosphoric aci

d H3PO4 and dihydrogen phosphate ion H2PO4− Formic acid HCOOH and formate ion HCOO− Carbonic acid H2CO3 and bicarbonate ion HCO3− Phenol C6H5OH and phenolate ion C6H5O− Monohydrogen phosphate ion HPO42− and phosphate ion PO43− Acetic acid CH3COOH and acetate ion CH3COO− Dihydrogen phosphate ion H2PO4− and monohydrogen phosphate ion HPO42− Ammonium ion +NH4 and ammonia NH3 Lactic acid CH3CH(OH)COOH and lactate ion CH3CH(OH)COO− Bicarbonate ion HCO3− and carbonate ion CO32−
Chemistry
1 answer:
Juliette [100K]3 years ago
4 0

Answer:

bkfhjjfrsxtr

Explanation:

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Determine the molar solubility of AgBr in a solution containing 0.150 M NaBr. Ksp (AgBr) = 7.7 Ă— 10-13. Determine the molar sol
Kaylis [27]

Hey there!:

Given the reaction:

 NaBr  ⇌  Na⁺ +  Br⁻

  ↓              ↓         ↓

0.150M      0.150M     0.150M


AgBr ⇌ Ag⁺   + Br⁻

 ↓            ↓          ↓

 x            x         0.150M


Therefore:

Ksp = x * 0.150

x = ( 7.7 * 10⁻¹³ ) / 0.150

x = 5.1 * 10⁻¹²


Answer B


Hope that helps!

5 0
3 years ago
how are ionic bonds formed? a. by the disintegration of one or more electronsb. by the sharing of one or more electrons between
Greeley [361]

The correct answer is: by the transfer of one or more electrons from one atom to another.

6 0
4 years ago
Some plant seeds are adapted to develop only at extremely high temperatures. For what environmental change are
Hoochie [10]

Answer:

Forest Fire

Explanation:

Forest fire is an ecological factor over which biological processes like seed dispersal and their germination is dependent upon. Some plants germinate under high temperature underground regions of the soil which is covered by the hot soil affected by the burning by the forest fire. Some of the coniferous trees like longpole pines have hard cone which exhibit the seeds. These cones exhibit the serotonin resins which are melted by the forests fire hence fire helps in dispersal of the seeds.  Other plants like Eucalyptus and Banksia are also dependent upon fire for seed dispersal.

4 0
3 years ago
Read 2 more answers
Explain the need of the term avarage atomic mass
vodomira [7]

Answer:

The average atomic mass of an element is the sum of the masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms of that element that are of a given isotopе). An element does not have an absolute atomic mass.

<em>Hope</em><em> this</em><em> </em><em>helps</em><em> </em><em>:</em><em>)</em>

4 0
3 years ago
In the combined gas law, if the volume is decreased, what happens to the temperature if pressure remains constant?
Flura [38]

The correct answer is A. In the combined gas law, if the volume is decreased and the pressure is constant, then the temperature decreases.

 <span>P1V1/ T1 = P2V2 / T2</span>

 <span>Assume the volume decrease by half; V2 = V1/2</span>

 <span>P1V1/ T1 = P2V1 /2 T2</span>

 <span>Cancelling terms,</span>

 <span>1/T1 = 1/2 T2</span>

T2 = T1/2

 <span>Thus, the temperature decreased.</span>

8 0
4 years ago
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