10 g of glue with 13 g of water ,
Mass ratio of the material can be calculated as:
8 g of sodium borate suspended in 11 g of water, mass ratio can be calculated as:
Answer:
The water cycle will affect the climate by causing rain and snow.
Explanation:
if tempatures increase more rain fall will occur because more water evaporates in the air.
Answer:
0.047 %
Explanation:
Step 1: Given data
- Partial pressure of ozone (pO₃): 0.33 torr
- Total pressure of air (P): 695 torr
Step 2: Calculate the %v/v of ozone in the air
Air is a mixture of gases. We can find the %v/v of ozone (a component) in the air (mixture) using the following expression.
<em>%v/v = pO₃/P × 100%</em>
%v/v = 0.33 torr/695 torr × 100%
%v/v = 0.047 %
Given:
Mass, m = 51.1 g
Volume, V = 6.63 cm³
By definition,
Density = Mass/Volume
= (51.1 g)/(6.63 cm³)
= 7.7074 g/cm³
In SI units,
Density = (7.7074 g/cm³)*(10⁻³ kg/g)*(10² cm/m)³
= 7707.4 kg/m³
Answer: 7.707 g/cm³ or 7707.4 kg/m³
Answer:
0.290 atm is the pressure of the system after 7.7min
Explanation:
The general first-order rate constant is:
ln [A] = -kt + ln [A]₀
<em>Where [A] is concentration of A in time t,</em>
<em>K is rate constant, 3.2x10⁻⁴s⁻¹</em>
<em>[A]₀ is initial concentration = 0.336atm.</em>
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7.7 min are:
7.7min * (60s / 1min) = 462s
Solving:
ln [A] = -kt + ln [A]₀
ln [A] = -<em>3.2x10⁻⁴s⁻¹*462s</em> + ln [0.336atm]
ln [A] = -1.238
[A] =
<h3>0.290 atm is the pressure of the system after 7.7min</h3>
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