Answer:Answer: (B) Archaebacteria
Explanation:
Explanation: Archaebacteria, like all prokaryotes, have no membrane bound organelles. This means that the archaebacteria are without nuclei, mitochondria, endoplasmic reticula, lysosomes, Golgi complexes, or chloroplasts. Because these organisms have no nucleus, the genetic material floats freely in the cytoplasm
Answer:
Explanation:
Mole = no. Molecules/6.02×10^23
Mole = (2.4×10^25)/(6.02×10^23)
Mole = 39.87mole
Molar mass of NaHCO3 is
= 23 + 1 + 12 + 3(16)
= 84g/mol
Mole = mass/molar mass
Mass = Mole × molar mass
Mass = 39.87 × 84
Mass= 3348.84g
Answer:
Mass = 80.6 g
Explanation:
Given data:
Mass of N₂ consumed = ?
Mass of CaCN₂ formed = 265 g
Solution:
Chemical equation:
CaC₂ + N₂ → CaCN₂ + C
Number of moles of CaCN₂:
Number of moles = mass/molar mass
Number of moles = 265 g/ 92.11 g/mol
Number of moles = 2.88 mol
Now we will compare the moles of CaCN₂ and N₂.
CaCN₂ : N₂
1 : 1
2.88 : 2.88
Mass of N₂:
Mass = number of moles × molar mass
Mass = 2.88 mol × 28 g/mol
Mass = 80.6 g
Answer:
The answer is A
Explanation:
Let's break this down. . .
-The lower the pH, the more acidic.
-So, the pH of 2 is more acidic than 3.
-Then, it's pretty obvious that the concentration with more acidic substance will be greater or higher than the other substance.
- As a result, the concentration of pH 2 will be greater or higher than the concentration of pH 3.
If you want the "mathematical" form then here:
Concentration
A pH of 2 would be 10 to the -2; 10^-2 which will equal 0.01
A pH of 3 would be 10 to the -3; 10^-3 which will equal 0.001
Which one is greater than the other?
A substance with a pH of 2 has a 10 times higher concentration of H* than a substance with pH of 3.
<span>The atomic number tells you how many _PROTONS_ are in the _NUCLEUS_ of an atom of that element. :)</span>