Answer:
Atomic number
Explanation:
Atomic number is the number of protons, and therefore also the total positive charge, in the atomic nucleus. The Rutherford–Bohr model of the hydrogen atom (Z = 1) or a hydrogen-like ion (Z > 1).
<h2>The correct" option is (d)"</h2>
Explanation:
- The correct option in the given statement is option (d).
- Radiation is a process in which the transfer of energy is in the form of heat, and light and is emitted from one object or material and transmitted through the surroundings and then absorbed by another medium.
- Radiation occurs when their is a difference between the temperature of two medium or phases.
Answer:
4NH3 + 5 O2 → 4 NO + 6 H2O
Explanation:
The formula of ammonia is NH3. Oxidise means adding 02. This will result in Nitrogen(II)oxide which is NO, and H20.
On the left side we have 3xH and on the right side we have 2x H. To get the same amount we multiply the left side bij 2 and the right side by 3.
This gives us 2N on the left side, so we multiply NO by 2, to get the same amount of N.
This gives us 5x O at the right side, so to get the same amount we multiply O2 by 5/2 ( we already got 2x O).
This gives us 2NH3 + 5/2 O2 → 2NO + 3H20
We multiply by 2 to get rid of fractions, which will give us:
4NH3 + 5 O2 → 4NO + 6H20
Molar mass of NaHCO3 is 83.9. moles of Na...O3= 5.8/83.9
=0.0691
for every mole of Na..O3 there are 3 O
n(O) = n(NaHCO3) x3
= 0.207
mass of O is the moles x molar mass (16)
therefore the mass of O is 3.3 grams
Keq = products / reagents:
2 HClO = H₂O + Cl₂<span>O
</span>
Keq = [ H₂O ] x [ Cl₂O ] / [ HClO ]₂
keq = 0.077 x 0.077 / [0.023]²
keq = 0.005929 / 0.000529
keq = 11
Answer D
hope this helps!