Answer:
With the distance allowing us a conversion from one to the other. Two stars can have the same apparent magnitude, but different absolute magnitude, if we measure the same amount of light from them, but they're at a different distance from the Earth.
Explanation:
Answer:
spandex and cotton is a natural mix for sporta clothing and undergarments to improve stretching properties and prevent odour
Answer:
m = 0.544 moles/kg
Explanation:
To do this, we need to use the expression for molality of a solution which is:
m = n / kg water
Where:
n: moles of solute
m: molality of solution
In this case, we have the moles of the solute, which is the C6H12O6 and the grams of water, and these grams would have to be turn into kg. Let's do this first:
kg of water = 150 g * 1 kg / 1000 g = 0.150 kg of water.
Now, replacing in the above expression of molality, we can calculate the molality of the solution:
m = 0.0816 / 0.150
<h2>
m = 0.544 moles/kg</h2>
Explanation:
Rate constant = 6.08 x 10–4 s–1
What is the rate of the reaction when [N2O5] = 0.100 M..?
A first-order reaction depends on the concentration of one reactant, and the rate law is:
r= −dA / dt = k[A]
Rate of reaction = k [ A ]
where [A] = 0.100 M
Rate of reaction = (6.08 x 10–4) x 0.100
Rate of reaction = 6.08 x 10–5 Ms–1
what happens to the rate when the concentration of N2O5 is doubled to 0.200 M?
Rate of reaction = k [ A ]
[A] = 0.200
Rate of reaction = (6.08 x 10–4) x 0.200
Rate of reaction = 1.216 x 10–4 Ms–1
The rate of the reaction increases to 1.216 x 10–4 Ms–1