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kherson [118]
2 years ago
15

This is the overall reaction of a mercury oxide dry cell:

Chemistry
1 answer:
Vesnalui [34]2 years ago
3 0

<u>Answer:</u>

Hg gets reduced

(Look at the equation; notice how Hg loses O while Zn gains it)

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Is barium nitrate more soluble in water than CH4 or the other way around?
kenny6666 [7]
Barium nitrate and methane (CH4) are both soluble. They both will dissolve in water, however, barium nitrate will dissociate becoming barium 2+ ions and nitrate becoming NO3 1- ions. All nitrates are soluble and dissociate. CH4 is a weak base and does dissolves but doesn't dissociate. So in solubility terms.... they are both equally soluble just one happens to dissociate into its cations and anions. Hope this helps!
3 0
3 years ago
In an experiment, 3.25 g of NH3 are allowed to react with 3.50 g of O2. 4NH3 + 5O2 &gt; 4NO + 6H2O a. Which reactant is the limi
cluponka [151]

Answer:

2.61 g of NO will be formed

The limiting reagent is the O₂

Explanation:

The reaction is:

4NH₃  +  5O₂  →  4NO  +  6H₂O

We convert the mass of the reactants to moles:

3.25g / 17 g/mol = 0.191 moles of NH₃

3.50g / 32 g/mol =0.109 moles of O₂

Let's determine the limiting reactant by stoichiometry:

4 moles of ammonia react with 5 moles of oxygen

Then, 0.191 moles of ammonia will react with (0.191 . 5) / 4 = 0.238 moles of oxygen. We only have 0.109 moles of O₂ and we need 0.238, so as the oxygen is not enough, this is the limiting reagent

Ratio with NO is 5:4

5 moles of oxygen produce 4 moles of NO

0.109 moles will produce (0.109 . 4)/ 5 = 0.0872 moles of NO

We convert the moles to mass, to get the answer

0.0872 mol . 30g / 1 mol = 2.61 g

7 0
3 years ago
Which planets have a larger orbital radii, terrestrial planets or gas giants
Sliva [168]
The answer is Gas Giants
5 0
3 years ago
Read 2 more answers
How would you describe the geocentric model?
Klio2033 [76]

A model that places earth in the center and has the sun, planets, and other objects orbiting the earth.

Explanation:

The geocentric model is a model that places earth in the center and has the sun, planets and other objects orbiting the earth.

  • Based on the geocentric model of the earth, other planetary bodies revolves round the earth.
  • The heliocentric model is a stark contrast of the geocentric model.
  • In the heliocentric model, the sun is at the center of the solar system.
  • This model is now known to be correct.

Learn more:

Sun brainly.com/question/2887352

#learnwithBrainly

6 0
3 years ago
A 5.0 gram sample of lead and a 3.2 g sample of iron are placed into 367 mL of water. What will be the new volume level of water
olasank [31]
Volume = mass/density 
Lead: v=5.0g/11.34g/cc = 0.440cc
For lead, the new volume level of water will be 367+0.440= 367.440ml

Iron: v=3.2g/7.874g/cc = 0.406cc
For Iron, the new volume level of water will be 367+0.406= 367.406ml 

If you add both, then it will be 367+0.406+0.440= 367.846 mL

First find the volume of each sample and then add that to 367ml of water. 

I hope that helps. 
3 0
3 years ago
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