Answer:
7.81 moles
Explanation:
To solve this problem, let us generate an expression involving volume and number of mole of the gas since the pressure and temperature of the gas are constant.
From ideal gas equation:
PV = nRT
Divide both side by P
V= nRT/P
Divide both side by n
V/n = RT/P
Since RT/P are constant, then:
V1/n1 = V2/n2
Data obtained from the question include:
V1 = 4.11
n1 = 2.51 moles
V2 = 16.9L
n2 =?
Using the above equation i.e V1/n1 = V2/n2, the final number of the gas can be obtained as illustrated below:
4.11/2.51 = 16.9/n2
Cross multiply to express in linear form
4.11 x n2 = 2.51 x 16.9
Divide both side by 4.11
n2 = (2.51 x 16.9) / 4.11
n2 = 10.32moles
Now, to obtain the number of mole of the gas added, we'll subtract the initial mole from the final mole i.e
n2 — n1
Number of mole added = n2 — n1
10.32 — 2.51 = 7.81 moles
Therefore, 7.81 moles of the gas was added to the container
<span>Answer: yes, when calcium hydroxide powder is placed into a hydrochloric acid solution, aqueous calcium hydroxide and water are formed.
</span>
<span /><span /><span>
Explanation:
</span><span>1) Calcium hydroxide is a base whose chemical formula is: Ca(OH)₂</span>
<span /><span>
2) Hydrochloric acid is the acid with chemical formula HCl
</span><span>3) Acids and bases react in a double replacement reaction forming salt plus water: Acid + Base → salt + water
</span>
<span /><span /><span>
4) The specific chemical equation for these reactants is:
</span><span>Ca(OH)₂ (s) + 2HCl(aq) → CaCl₂ (aq) + 2H₂O(l)</span>
<span /><span>
</span><span>5) CaCl₂ is calcium chloride, a salt, and H₂O is water
</span><span>
</span>
Answer:
Energy exists in different forms, all of which can be classified as either potential energy or kinetic energy. Potential energy is energy stored in an object due to its position or arrangement. Kinetic energy is energy of an object due to its movement - its motion.
Explanation:
z) Marie Curie
Explanation:
Marie Curie was awarded the nobel prize in chemistry for the year 1911. This was because of her research and discovery of the radioactivity.
- The was the first woman to be awarded the nobel prize. She won the award alongside her husband, Pierre Curie.
- Pierre and Marie Curie were both French chemist.
- Their work led to the discovery of polonium and radium as radioactive elements.
- She died of exposure to ionizing radiations from radioactive particles.
Learn more:
Transmutation brainly.com/question/3433940
#learnwithBrainly
