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Oksi-84 [34.3K]
3 years ago
15

Urgent! which element do you think has a greater mass? cadmium or zinc?

Chemistry
2 answers:
Alex Ar [27]3 years ago
5 0

Answer:

zinc

Explanation:

MissTica3 years ago
5 0

Answer:

cadmium has a greater mass.

explanation:

zincs mass: 65.38

cadmiums mass: 112.411

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Which of the following examples from the story "The Dentist" uses direct characterization to tell you how Lemon
padilas [110]

Answer: Don't know sorry

Explanation: And I-oop SkSk

8 0
3 years ago
Given the following, what is the equilibrium constant for the reaction: 2 A + 3 D â 3 C + 2 B? I: 2 A â 2 B, K = 1x105 II: C â D
Anastasy [175]

Answer:

K= 1.25*10⁻⁵  (any of the options) , but if the problem's statement is wrong and D → C, K₂ =  [C]/[D] = 2*10³ then K= 8*10¹⁴ (option F)

Explanation:

for

2 A + 3 D → 3 C + 2 B

K= [C]³*[B]² /([A]²*[D]³) = ([B]/[A])²* ([C][/D])³

where

2 A → 2 B , K₁ = [B]²/[A]² = ([B]/[A])² =1*10⁵

and

C → D, K₂ =  [D]/[C] = 2*10³

therefore

K=K₁* (1/K₂)³=K₁/K₂³ = 1*10⁵ / (2*10³)³ = 1.25*10⁻⁵

K= 1.25*10⁻⁵

but if the problem's statement is wrong and

D → C, K₂ =  [C]/[D] = 2*10³

then

K=K₁*K₂³=K₁*K₂³ = 1*10⁵ * (2*10³)³ =8*10¹⁴

K= 8*10¹⁴

6 0
4 years ago
In a titration, 25.0 mL of a 0.40 M NaOH solution is used to neutralize 10.0 mL of HCl. Calculate the molarity of the acid.
laiz [17]

The molarity of the HCl acid will be 0.001 M.

<h3>What is Neutralization ?</h3>

A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H⁺ ions and OH⁻ ions to generate water.

This is the neutralization of a strong acid (HCl) and a strong base (NaOH), which is ruled by this equation :

HCl (aq) + NaOH (aq) → NaCl (aq) + H₂O (l)

Mole Ratio : 1 mol HCl : 1 mol NaOH

Formula used ;

Molarity  = number of moles  / Volume  (in liters)

Solve for n ;

n = M × V

Substitute values and compute ;

n = 0.40 M × 0.025 liter = 0.01 moles NaOH.

As the molar ratio is NaOH : HCl

Therefore, there will be same number mole for the HCl

Now, Molarity of HCl Solution ;

Molarity = n / volume

Molarity = 0.01 / 10

             =  0.001 M HCl

Hence, The molarity of the HCl acid will be 0.001 M.

Learn more about neutralization here ;

brainly.com/question/16188332

#SPJ1

7 0
2 years ago
The graph shows a solubility curve of a soluble substance.
DochEvi [55]

Answer:

Looks to be almost at 30

Explanation:

Based on the graph

5 0
4 years ago
Q: How many of the molecules shown contain only one covalent bond?
SVETLANKA909090 [29]

Answer:

cl2 - 1 bond

HCl.- 1 bond

N2 - 3 bond

o2 - 2 bond

  • Cl requires one electron to complete it's octave so it share it's one electron with other chlorine and make a single covalent bond
  • H has one electron and Cl requires one so both form one single bond
  • N requires 3 electrons so it form 3 bonds with other N
  • oxygen requires 2 electrons so it forms 2 bond with other oxygen

5 0
2 years ago
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