Answer:
Competition
Explanation:
Peppered moths get their color in lieu to become the fittest among all so that they can survive easily. During industrial age, when pollution suddenly became high these moths changed their color through evolution in order to save themselves from their predators.
PLS GIVE BRAINLIEST
Answer:
carbon-14
Explanation:
becouse protons and neutrons are nagetivly charged
Answer: -
24.24 mL
Explanation: -
Mass of CaCO₃ = 1.212 g
Molar mass of CaCO₃ = 40 x 1 +12 x 1 + 16 x 3 = 100 g / mol
Number of moles of CaCO₃ =
= 0.01212 mol
The balanced chemical equation for the reaction that occurs when CaCO₃ is added to HCl is
CaCO₃ + 2HCl --> CaCl₂ + H₂O + CO₂
From the equation we see
1 mol of CaCO₃ reacts with 2 mol of HCl
0.01212 mol of CaCO₃ react with
= 0.02424 mol of HCl
Strength of HCl = 1 M
Volume of HCl required = Number of moles of HCl / strength of HCl
= 0.02424 mol / 1 M
= 0.02424 L
= 0.02424 x 1000 mL
= 24.24 mL