They start to move around really fast
<u>Answer:</u> 7 m/s
<u>Reasoning:</u> He ran 28 in 4 seconds. So we will divide 28 by 4 resulting in...
28/4=7
So he ran 7 m/s
Answer:
m = 190. g MgCl2
Explanation:
Use a molar ratio to get the # of moles MgCl2 produced from 4.00 mol of HCl:
4.00 mol HCl × (1 mol MgCl2/2 mol HCl) = 2.00 mil MgCl2
So 2.00 moles of MgCl2 will be produced. To find the mass in grams, use the molar mass of MgCl2:
2.00 mol MgCl2 × (95.211 g MgCl2/1 mol MgCl2)
= 190. g MgCl2
The chemical formula for the product is RbBr.
Answer:
The new concentration of CO₂ dissolved is 0.0085 M
Explanation:
Applying the equation below;
where;
P₁ is the initial pressure = 4 x 10⁻⁴ atm
P₂ is the final pressure = 0.25 atm
n₁ is the initial concentration = 1.36 x 10⁻⁵ M
n₂ is the final concentration = ?
n₂ = (n₁*P₂)/(P₁)
n₂ = (1.36 x 10⁻⁵ X 0.25)/(4 x 10⁻⁴)
n₂ = 0.0085 M
Therefore, the new concentration of CO₂ dissolved is 0.0085 M