Answer:
2764.11 grams of potassium carbonate
Explanation:
brainliest?
Answer:
Getting coated with tarnish
Explanation:
Silver, the original substance is combining with a new substance tarnish to make a whole new chemical.
Using the ideal gas law equation, we can find the number of H₂ moles produced.
PV = nRT
Where P - pressure - 0.811 atm x 101 325 Pa/atm = 82 175 Pa
V - volume - 58.0 x 10⁻³ m³
R - universal gas constant - 8.314 Jmol⁻¹K⁻¹
T - temperature - 32 °C + 273 = 305 K
substituting these values in the equation,
82 175 Pa x 58.0 x 10⁻³ m³ = n x 8.314 Jmol⁻¹K⁻¹ x 305 K
n = 1.88 mol
The balanced equation for the reaction is as follows;
CaH₂(s) + 2H₂O(l) --> Ca(OH)₂(aq) + 2H₂(g)
stoichiometry of CaH₂ to H₂ is 1:2
When 1.88 mol of H₂ is formed , number of CaH₂ moles reacted = 1.88/2 mol
therefore number of CaH₂ moles reacted = 0.94 mol
Mass of CaH₂ reacted - 0.94 mol x 42 g/mol = 39.48 g of CaH₂ are needed
Your blood is a living part or tissue of your body that composed of liquid and solid part. The liquid part is made of plasma and mineral like, water, salt and protein. While the solid part is composed of red blood cells, white blood cells and also platelets
Answer:
179.2g of O2
Explanation:
Fir, we must obtain a balanced equation for the reaction.
The equation for the reaction is:
2H2 + 02 —> 2H2O
Next, we find the molar mass of H2 and O2 as shown below:
Molar Mass of H2 = 2x1 = 2g/mol
Mass conc. of H2 from the balanced equation = 2 x 2 = 4g
Molar Mass of O2 =16x2 = 32g/mol
From the equation,
4g of H2 required 32g of O2,
Therefore 22.4g of H2 will require = (22.4x32)/4 = 179.2g of O2
