Answer:
Volume of hydrogen gas = 0.1539dm3
Explanation:
Equation of the reaction
Mg(s) + 2HCl --> MgCl2(aq) + H2(g)
Molar concentration of HCl = 0.2mol/dm3
Mass of magnesium = 0.0243g
Volume of HCl = 0.05dm3
No of moles of HCl = Volume * molar concentration
= 0.05 * 0.5
= 0.01mol
No of moles of Magnesium = mass/molecular weight
Molecular weight of Magnesium = 24g/mol
No of moles of magnesium = 0.0243/24
= 0.001013mol
Using stoichiometry,
Since 1 mole of Magnesium metal reacted with 2 moles of HCl acid
HCl is the limiting reagent.
Therefore, 1 mole of hydrogen gas is given off.
0.005 mole of hydrogen is given off.
Using ideal gas law, PV = nRT
Volume = (0.005 * 0.0821 * 300)/0.8
= 0.1539dm3
Answer:
Explanation:
6CO₂ + 6 H₂O ⇄ C₆H₁₂0₆ + 6O₂
This is the chemical equation given .
1. The equation shows a __Chemical equation_______the breaking and forming of chemical bonds that leads to a change in the composition of matter.
2. In the equation, CO₂ is a___reactant_____.
3. In the equation, C₆H₁₂0₆ is a ___product________.
4. In O₂, the type of bond that holds the two oxygen atoms together is a_nonpolar_covalent bond_________.
5. In H₂O, the type of bond that holds one of the hydrogen atoms to the oxygen atom is a__polar_hydrogen bond____.
6. The number of oxygen atoms on the left side of the equation is__equal to_________ the number of oxygen atoms on the right side.
The answer is d: <span>light waves you can see and waves of both higher and lower energy radiation.
The electromagnetic spectrum is the spectrum of all frequencies of electromagnetic (or light) radiation. The visible spectrum is a small range of these frequencies.</span>
The molar heat capacity is the heat capacity per unit amount (SI unit: mole) of a pure substance and the specific heat capacity, often called simply specific heat, is the heat capacity per unit mass of a material.