<span>MgO + HCl = MgCl2* + H2*O
To balance an equation, you have to have both the reactants and products side equal.
Mg = 1 Mg = 1
H = 1 H = 2
Cl = 1 Cl = 2
MgO + 2HCl = MgCl2 + H2*O
We added the coefficient 2, so they could balance. </span>
Answer:
Specific gravity is the density of asubstance divided by the density of water. Since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density(but without any units).
<u>Answer:</u> The volume of acid should be less than 100 mL for a solution to have acidic pH
<u>Explanation:</u>
To calculate the volume of acid needed to neutralize, we use the equation given by neutralization reaction:
where,
are the n-factor, molarity and volume of acid which is HCl
are the n-factor, molarity and volume of base which is NaOH
We are given:
Putting values in above equation, we get:
For a solution to be acidic in nature, the pH should be less than the volume of acid needed to neutralize.
Hence, the volume of acid should be less than 100 mL for a solution to have acidic pH
Moles H2O = 1233 g/ 18 g/mol=68.5 68.5 x 40.7 =2788 kJ
The answer is option D.Star X may be moving but its motion is not radial.
