The correct answer is 0.9803 atm
Given, pressure of nitrogen = 745 mmHg
Conversion factor: 760 mmHg = 1 atm
Converting 745 mmHg to 1 atm
745 mmHg x ( 1 atm / 760 mmHg) = 0.9803 atm
So is the pressure of nitrogen is 0.9803 atm
The correct answer is B. Low chemical reactivity
Not sure but if I were to guess I would say it is solid steel
Answer:
Hydrogen and chlorine need to be balanced. There is an equal amount of magnesium on each side.
Explanation:
The given chemical equation does not hold the law of conservation of mass because the number of atoms of hydrogen and chlorine are not balanced on each side.
Chemical equation:
Mg + HCl → MgCl₂ + H₂
Balanced chemical equation:
Mg + 2HCl → MgCl₂ + H₂
Now this equation hold the law of conservation of mass.
Law of conservation of mass:
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
Explanation:
This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.