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Neporo4naja [7]
3 years ago
9

What is rate of reaction? Discuss in brief slow and fast reactions.​

Chemistry
1 answer:
Sindrei [870]3 years ago
3 0
The reaction rate or rate of reaction is the speed at which a chemical reaction takes place, defined as proportional to the increase in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time.

Reactions that happen quickly have a high rate of reaction. For example, the chemical weathering of rocks is a very slow reaction: it has a low rate of reaction. Explosions are very fast reactions: they have a high rate of reaction. Rate of reaction is an example of a compound measure.
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Why do foods and fuels have chemical potential energy?
Ainat [17]
Fuels are burned to produce energy, and your body breaks down the food to produce nutrients for your body.
6 0
3 years ago
Read 2 more answers
Determine the oxidation number of each element in these compounds or ions. (a) au2(seo4)3 (gold(iii) selenate) au = se = o = (b)
Stels [109]
<span>                                                    Au</span>₂(SeO₄)₃

                                         O = -2 × 4 = -8
                                             Se  =  + 6
So,
                                            (+6 - 8) = -2

Means (SeO₄) contains -2 charge, Now multiply -2 by 3
                                             
                                             -2 ₓ 3 = -6
Means,
                             Au₂ + (-6) = 0
               
                            Au₂  = +6
Or,
                            Au  =  6 / 2

                            Au  = +3
Result:
                            Au  =  +3
                            Se  =  +6
                            O   =  -2

                                                      Ni(CN)₂


Cyanide (CN⁻) contains -1 charge,
So,
                              N  =  -3
                              C  =  +2
Then,
                                         Ni + (-1)₂  =  0

                                               Ni - 2  =  0
Or,
                                                     Ni =  +2
Result:
                            N  =  -3
                            C  =  +2
                           Ni  =  +2




6 0
3 years ago
Global warming____.
Karolina [17]
Will cause sea levels to fall
4 0
3 years ago
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Prediction for Scandium (II) and Cl
Nimfa-mama [501]

Answer:

ScCl₂

General Formulas and Concepts:

<u>Chemistry</u>

  • Reading a Periodic Table
  • Reaction Prediction
  • Determining Chemical Compounds

Explanation:

<u>Step 1: Define</u>

Scandium (II)

Cl

<u>Step 2: Determine Charges</u>

Sc²⁺

Cl⁻

<u>Step 3: Predict Compound</u>

<em>We need to balance out the charges so the overall charge is 0.</em>

ScCl₂

<u>Step 4: Reaction</u>

RxN:   Sc²⁺ + Cl₂ → ScCl₂

3 0
3 years ago
How many grams of NH3 are needed to provide the same number of molecules as in 0.85 grams of SF6?
solniwko [45]

Above it says the molecular weights are

NH3- 17g/mol and SF6-146 g/mol

Well 1 mole of SF6 is 146.048 grams (i added hte atomic masses of each element). So then the number of moles in 0.85 grams would be 0.00582000438 moles.


<span><span><span>= 1mole / </span><span>146.048g *</span></span> 0.85g</span>


so we would need 0.00582000438 moles of NH3 to have the same number of molecules.

One mole of NH3 is 17.030519999989988 grams (i added each atoms mass). so 0.00582000438 moles of NH3 would be:


<span><span><span>= 17.030519999989988 g / </span><span>mole * </span></span>0.00582000438moles</span>


that equals 0.09911770099 grams.

so 0.09911770099 grams is the answer if you round that you get about 0.1 grams


3 0
3 years ago
Read 2 more answers
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