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meriva
3 years ago
5

PLEASE HELPPPP!!! IM BEING TIMED

Chemistry
2 answers:
Mrac [35]3 years ago
8 0

Answer:

B)

Explanation:

This should be the correct answer, lmk if it's not

zvonat [6]3 years ago
6 0

Answer:

I believe D is the correct answer

Explanation:

I am doing the same test right now and this was the answer on mine

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In an experiment, 3.25 g of NH3 are allowed to react with 3.50 g of O2. 4NH3 + 5O2 > 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
Differentiate between compounds and mixtures using the particle model of<br> matter.
trasher [3.6K]

Answer:

compounds are substance which can be formed by chemically combining two or more elements.

mixtures are substance that are formed by physically mixing two or more substances

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3 years ago
WHAT TRANSPORT ULTRAVIOLET DYE THROUGH THE A/C SYSTEM?
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<span>refrigerant The refrigerant does all the work. It's a strategy in which a little measure of fluorescent color is infused into and circled through a working framework of an A/C The refrigerant blend will escape and gather at all break destinations.</span>
4 0
3 years ago
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Match each type of reaction to its amount of potential energy. (PLEASE HELP )
sergejj [24]
Endo is more in reactants and exo is more in products because in exothermic reactions heat is released
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3 years ago
A. Is lithium (Li) more or less reactive than beryllium (Be)?
damaskus [11]

Answer:

Li is more reactive then Be.

Explanation:

As you go to the farther left and down on the periodic table, the higher that element reactivity is.

5 0
3 years ago
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