Answer:
8.0x10⁻⁴ M/s
Explanation:
The rate of the reaction is given by the equation:
Where the minus signal indicates that the reactants are disappearing, k is the constant of the reaction, and x, y, and z are the orders of each compound.
-r = 0.25*(0.4)²*(0.1)*(0.2)
-r = 8.0x10⁻⁴ M/s
1) Chemical equation:
2Ca + O2 ---> 2CaO
2) molar ratios
2 mol Ca : 1 mol O2 : 2 mol CaO
3) Convert 35.4 g of Ca to moles:
number of moles = mass in grams / atomic mass = 35.4 g / 40.078 g/mol = 0.883 mol
3) use proportion and solve for x:
2 mol Ca / 1 mol O2 = 0.883 mol Ca / x
=> x = 0.883 mol Ca * 1 mol O2 / 2 mol Ca
=> x = 0.4416 mol O2
3) use ideal gases equation to transform moles to liters
pV = nRT => V = nRT / p =
V = [0.4416 mol * 0.0821 atm*liter / atm*K * 285K] / 1.2 atm = 8.6 liter
Answer: 8.6 liters
To keep your seat and not moving so you<span> will not bang against other parts within the </span>car<span> such as steering wheel</span>
Answer:
Bad bacteria come from external influences such as food, environmental toxins and even the effects of stress on our bodies. Sometimes a disturbance in the force, or an imbalance in the homeostasis of our bodies, will turn a healthy gut microbe into a colony of very unfriendly bacteria inside our bodies.