The charge of a proton is +1, of an electron is -1, and of a neutron is 0.
12*(+1) +10*(-1) +14*0
= 12 -10
= +2
The correct answer is (2) +2.
Hope this would help~
Without the atmosphere, the greenhouse effect would not be possible.
Answer:
a chromosome contains many genes
Explanation:
Answer:
The NaCl concentration will be 0.03 M.
Explanation:
Given data:
Initial volume = V₁ = 56.98 mL (56.98/1000 = 0.05698 L)
Initial concentration = M₁= 0.5894 M
Final volume = V₂= 1.20 L
Final concentration = M₂= ?
Solution:
By diluting the solution volume of solution will increase while number of moles of solute remain the same.
Formula:
Initial concentration × Initial volume = Final concentration × Final volume
M₁V₁ = M₂V₂
M₂ = M₁V₁ / V₂
M₂ = 0.5894 M × 0.05698 L / 1.20 L
M₂ = 0.0336 M /1.20
M₂ = 0.03 M
Answer:
match emit 350 J light energy.
Explanation:
By law of conservation of energy, total energy before and after reaction for an isolated system remains constant.
Total energy for unlit match = 1000 j
When it burns type of energy released
thermal energy = 400 j
light energy --> it value is unknown which we have to find
also remaining match has 250 joule of chemical energy
applying law of conservation of energy
energy before match was unlit = energy after match was lit
1000 j = thermal energy + light energy + chemical energy of remaining match
1000 J = 400 J + light energy + 250 J
light energy = 1000 J - 400J - 250J
light energy = 350 J
Thus, match emit 350 J light energy.