<span>KOH(aq) + Fe(NO3)3 --> KNO3(aq) + Fe(OH)3(s)
</span>Yes, a chemical reaction will occur
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<span>When the velocity was 0 m/s, all the forces acting on the car were balanced. The velocity changed because at least one unbalanced force is acting on the car. </span>
Answer:
Molarity = 8.89 mol/L
Explanation:
Given data:
Mass of hydrogen peroxide = 3%
Density = 1.01 g/mol
Molarity = ?
Solution:
3% hydrogen peroxide means 3 g of H₂O₂ are present in 100 g of solution.
Now we will calculate the moles of H₂O₂.
Number of moles = mass / molar mass
Number of moles = 3g/ 34 g/mol
Number of moles = 0.88 mol
Now we calculate the volume of solution.
d = m/v
v = m/ d
v= 100 g/ 1.01 g/ mL
v = 99 mL
In Litter
v = 99 / 1000 = 0.099 L
Molarity:
Molarity = number of moles / volume in L
Molarity = 0.88 mol/ 0.099 L
Molarity = 8.89 mol/L
When presented with balanced chemical equation, the same phase can be cancelled out only when they appear to be in the opposite side of the equation. This means that in one equation, a certain chemical is a product. However, on the next equation, that same substance can be the reactant.
Since inspired air is 21% oxygen and atmospheric pressure is 760 mmHg (at sea level), the partial pressure of oxygen is 0.21 x 760 mmHg = 160 mmHg. As air moves into the alveoli, water vapor and carbon dioxide are added, and that reduces the partial pressure of oxygen to about 100 mmHg in the alveolar gas.