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Which of these statements best explains the identity of reaction D?
A) It is a nuclear reaction because the atomic number remains the same when the number of valence electronsithanges.
B)It is a nuclear reaction because the atomic number remains the same when the particles are emitted from the nucleus.
c)It is a chemical reaction because the atomic number remains the same when the number of neutrons and protons changes.
D)It is a chemical reaction because the atomic number remains the same for all elements while a rearrangement of atoms through bonding occurs.
Which of these statements best explains the identity of reaction D?
A) It is a nuclear reaction because the atomic number remains the same when the number of valence electronsithanges.
B)It is a nuclear reaction because the atomic number remains the same when the particles are emitted from the nucleus.
c)It is a chemical reaction because the atomic number remains the same when the number of neutrons and protons changes.
D)It is a chemical reaction because the atomic number remains the same for all elements while a rearrangement of atoms through bonding occurs.
1 answer:
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Answer:
The volume of carbon dioxide gas generated 468 mL.
Explanation:
The percent by mass of bicarbonate in a certain Alka-Seltzer = 32.5%
Mass of tablet = 3.45 g
Mass of bicarbonate =
Moles of bicarbonate ion =
According to reaction, 1 mole of bicarbonate ion gives with 1 mole of carbon dioxide gas , then 0.01840 mole of bicarbonate ion will give:
of carbon dioxide gas
Moles of carbon dioxide gas n = 0.01840 mol
Pressure of the carbon dioxide gas = P = 1.00 atm
Temperature of the carbon dioxide gas = T = 37°C = 37+273 K=310 K
Volume of the carbon dioxide gas = V
(ideal gas equation)
1 L = 1000 mL
0.468 L =0.468 × 1000 mL = 468 mL
The volume of carbon dioxide gas generated 468 mL.
<u>Answer:</u> The temperature increase will be 31.70°C.
<u>Explanation:</u>
To calculate the increase in the temperature of the system, we use the equation:
where,
q = Heat absorbed = 36.5 kJ = 36500J
m = Mass of water = 275 g
c = Specific heat capacity of water =
= change in temperature = ? °C
Putting values in above equation, we get:
Hence, the temperature increase will be 31.70°C.