Answer : The correct option is, Subscript numbers tell us how many of the element to their upper-left there are in the molecule.
Explanation :
Subscript number : It indicates that the total number of atoms of an element present in a molecule.
While witting a chemical formula, first we have to write the symbol of an element and then write the number in the bottom of the symbol.
For example :
is the chemical formula of the glucose molecule. The glucose molecule is made up of six carbon atoms, twelve hydrogen atoms and 6 oxygen atoms.
The number 6 of carbon atom is written after and in the bottom (lower-right) of the symbol of carbon element (C). Similarly, the number 12 is written lower-right of the symbol of hydrogen element (H) and the number 6 is written lower-right of the symbol of oxygen element (O).
Therefore, the subscript numbers tell us how many of the element to their upper-left there are in the molecule.
The coefficients are 1 : 2 : 1 : 1
<u>Explanation:</u>
To be a balanced equation, the chemical equation should have has equal number of atoms on both reactant and product side.
Given chemical equation:
Now, calculate the number of atoms present in reactant side:
Sn - 1
- 1
K - 1
Br - 1
Then, calculate the number of atoms present in product side:
Sn - 1
- 1
K - 2
Br - 2
Therefore, in order to balance this given chemical equation multiply KBr by 2 on reactant side. So, the balanced chemical equation is as follows.
Hence,
<span>The
balanced half-reaction: V</span>⁺(aq) → V⁵⁺(aq) + 4e⁻.
Vanadium(I) cations lose four electrons and became vanadium(V) cations.
<span>
Oxidation reaction is increasing of oxidation number of element, because
element or ion lost electrons in chemical reaction.
Reduction is lowering oxidation number because element or ions gain
electrons.</span>
Answer:
One with mass 0.52kg will have higher acceleration.
Explanation:
We know that
F = m x a
As we can see, for a constant value of F , for a body having more mass will have less acceleration and a body having less mass will have more acceleration ( Inversely proportional when force applied is constant).
Therefore lesser mass body will have more acceleration.
Hence, <em>0.52 kg body will have more acceleration. </em>
Verification :
F = ma
For 0.52kg:
a= F / m = 26 / 0.52 = 50 m/s²
For 0.78kg:
a= F/m = 26 / 0.78 = 33.3 m/s²
Answer:
mass is 110.3g
Explanation:
Density = mass/volume
density = 8.96 g/cm³
volume = 12.31cm³
mass = ?
density x volume = mass
8.96 x 12.31 = 110.2976g≈110.3g
