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oksian1 [2.3K]
4 years ago
13

HELP PLEASE WITH 1 QUESTION.

Chemistry
1 answer:
Nata [24]4 years ago
8 0
The activity series goes top to bottom, most active to least active elements, going: Li, K, Ba, Sr, Ca, Na, Mg, Mn, Zn, Fe, Cd, Co, Ni, Sn, Pb, H, Cu, Ag, Hg, Au. 

Thus, your list of metals would go from most reactive to least reactive: Li, K, Mg, Zn, Fe, Cu, Au
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Can y’all please help me with these 2? I had surgery and missed this entire unit and it’s due Monday
eduard
Mark Brainliest please

Answer :

1. It will shift left ( as heat is added)

2. It will shift right ( as it cooled down)

Explanation :

For an exothermic reaction, heat is a product. Therefore, increasing the temperature will shift the equilibrium to the left, while decreasing the temperature will shift the equilibrium to the right.
4 0
3 years ago
Cobalt fluoride crystallizes in a closest packed array of fluoride ions, with the cobalt ions filling one-half of the octahedral
Zanzabum

Answer:

CoF₂

Cobalt Difluoride

3 0
3 years ago
Hen solid kbr is dissoved in water, the solution gets colder. this is an example of a(n) ________ reaction.
Sonja [21]
Endothermic reactions. These are reactionsthat take in energy from the surroundings. The energy is usually transferred as heat energy, causing the reaction mixture and its surroundings to get colder
7 0
3 years ago
A student uses visible spectrophotometry to determine the concentration of CoCl2(aq) in a sample solution. First the student pre
mart [117]

Answer:

0.200 M

Explanation:

Step 1: Given data

  • Mass of CoCl₂ (m): 2.60 g
  • Molar mass of CoCl₂ (M): 130. g/mol
  • Volume of solution (V): 100. mL (0.100 L)

Step 2: Calculate the moles (n) of CoCl₂ (solute)

We will use the following expression.

n = m / M

n = 2.60 g / (130. g/mol) = 0.0200 mol

Step 3: Calculate the molar concentration of the solution

Molarity is equal to the moles of solute divided by the liters of solution.

M = n/V

M = 0.0200 mol/0.100 L = 0.200 M

4 0
3 years ago
For what value of x do the two ratios suggest a proportional relationship. 13 to 7; x to 98
barxatty [35]

Answer:

The correct answer is D.

Explanation:

Let us first write this in a proportional relationship manner:

13 : 7 = x : 98

Now, the easiest way to deal with this kind of problem is to multiply the two outer parts of the proportional relationship on one side and two inner parts on the other side. So:

13 • 98 = x • 7

From here, it's easy to find x:

x = 13 • 98 / 7

x = 182

5 0
4 years ago
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