Answer:
The research is published in the most recent issue of leading scientific journal Nature Communications. About 4.6 billion years ago, a cloud of gas and dust that eventually formed our solar system was disturbed. The ensuing gravitational collapse formed the proto-Sun with a surrounding disc where the planets were born.
Answer:
a. 8.37 g,
b. 11.67 g
Explanation:
A) Given:
We need to find the mass of argon.
Firstly, we need to apply the ideal gas law in order to find the total number of moles of gases present in the flask:
From here:
Substituting the variables:
Find the number of moles of hydrogen dividing its mass by the molar mass:
Now find the moles of argon:
Using the molar mass of argon, convert this number into mass:
B) Given:
Firstly, the total pressure is equal to the sum of the vapor pressure of water and the partial pressure of oxygen. Knowing this, solve for the pressure of oxygen:
Use the ideal gas law:
Rearrange the equation, so that we have moles in terms of the mass and the molar mass of oxygen:
Convert the pressure of oxygen into atm knowing that 1 atm = 760 mm Hg. Then:
Now rearrange the ideal gas law equation for mass:
Solve using the variables identified:
Answer:
Volume stays.
Explanation:
If aerosol can throwing into the fire than the temperature of the aerosol can & the temperature of the contents of the gas in an aerosol will also increase, and it induces the pressure to rise.
Against the sides of the can, the gas molecules will smash rapidly with each other which are present inside an aerosol can, and the proportion of gas will stay the same as earlier. According to the law of conservation of matter, as a result of the heat, the gas particles can not be eradicated or expanded.
The process involving separation of liquid/solid mixture as regards this question is Decantation.
- Decantation can be regarded as one of the process used in separation of liquid from solid as well as other immiscible (non-mixing) liquids through the removal of the liquid layer that is present at the top from the layer of solid/liquid which present at the below.
- In the process, the liquid will be poured slowly into another vessel as the pouring continues, then the solid will settle in the original vessel.
- This process can be done through tilting the mixture after the the top layer have been poured out.
<em>Therefore, decantation is one of the separation technique.</em>
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