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allsm [11]
3 years ago
6

Answer the following questions about the last lesson below. What did we figure out about chain reactions? What did we figure out

about fission? Fission produce more energy than a typical fuel sources, chain reaction
Chemistry
1 answer:
PIT_PIT [208]3 years ago
8 0

Answer:

(Nothing)-But No answer

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The following exothermic reaction is allowed to reach equilibrium. What
Anon25 [30]
The answer is gonna be the last one :)
5 0
2 years ago
How many moles of methane (CH4) is<br> 6.70 x 1022 atoms of methane?
suter [353]

Answer:

0.1113  mol

Explanation:

Data Given:

no. of atoms of CH₄= 6.70 x 10²² atoms

no. of moles of methane (CH₄) = ?

Solution:

we will find no. of moles of methane (CH₄)

Formula used

          no. of moles = no. of atoms / Avogadro's number

Where

Avogadro's number = 6.022 x 10²³

Put values in above equation

         no. of moles = 6.70 x 10²² atoms / 6.022 x 10²³ (atoms/mol)

         no. of moles = 0.1113  mol

So,

There are 0.1113 moles of methane.

8 0
3 years ago
When potassium metal is placed in water a large amount of energy is released as potassium hydroxide and hydrogen gas are produce
Ann [662]

Explanation:

2K(s)+2H_2O\rightarrow 2KOH(aq)+H_2(g)

The given reaction is redox reaction but not combustion reaction.

Redox reaction : It is a chemical reaction in which oxidation and reduction occurs simultaneously.Oxidation is gaining of electrons and reduction is loosing of electrons.

K\rightarrow K^++e^- oxidation

2H^++2e^-\rightarrow H_2 reduction

Potassium when reacts with water ,gives potassium ion in aqueous medium and combines with hydroxide ion present in water to form potassium hydroxide where as H^+ ions of water by gaining electrons (from potassium in water) gives hydrogen gas.

Hence , yes it is a redox reaction

Combustion reaction are the chemical reaction in which one reactant react with oxygen molecule to give heat and light.

Here in given reaction no oxygen molecule is appearing on reactant side.

Hence not a combustion reaction.

6 0
2 years ago
When ammonium chloride is added to water and stirred, it dissolves spontaneously and the resulting solution feels cold. Without
d1i1m1o1n [39]
When ammonium chloride NH4Cl is added to water and stirred, it dissolves spontaneously (this is the basis for ΔG) for and the resulting solution feels cold (endothermic, the basis for ΔH). Without doing any calculations, we can easily deduce the signs of ΔG, ΔH, and ΔS for this process based on the observations.

ΔG < 0 (it is spontaneous)
ΔH < 0 (because the process is endothermic - it absorbs energy)
ΔS > 0 (entropy increases because of the dissolution of NH4Cl in water
7 0
2 years ago
Strontium carbonate + sulphuric acid, chemical equation​
tangare [24]
<h3>Answer:</h3>

SrCO₃ + H₂SO₄ → SrSO₄ + H₂O + CO₂

<h3>Explanation:</h3>

We are required to complete the chemical equation given;

strontium carbonate + sulfuric acid → ??

  • We know that, carbonates reacts with acids to form a salt, water and carbon dioxide.
  • Strontium carbonate reacts with sulfuric acid to form strontium sulfate, water and carbon dioxide.
  • Therefore, the equation for the reaction is;

SrCO₃ + H₂SO₄ → SrSO₄ + H₂O + CO₂

  • The equation is balanced as the number of atoms of each element are equal on both sides of the equation.
7 0
3 years ago
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