Answer:
Carbon dioxide is a pure substance that is a compound
Explanation:
First consider the properties of a pure substance:
•made of only one type of atom or molecule
•has a well-defined melting point, boiling point, colour, odour, density and solubility.
Answer:
I think its. SO2
Explanation:
the S is singular and there is 2 Os and thats what the model shows so I think I'm right
Considering the Boyle's law, the volume of the balloon at the higher altitude is 7.5 L.
The gas laws are a set of chemical and physical laws that allow determining the behavior of gases in a closed system. The parameters evaluated in these laws are pressure, volume, temperature and moles.
Boyle's law is one of the gas laws that states that the pressure of a gas in a closed container is inversely proportional to the volume of the container, when the temperature is constant. In other words, if the pressure increases, the volume decreases; while if the pressure decreases, the volume increases.
Boyle's law is expressed mathematically as:
P× V = k
In this law then two variables are related: pressure and volume, so it is assumed that the temperature of the gas and the number of molecules of the gas are constant.
Studying an initial state 1 and a final state 2 is fulfilled:
P1× V1= P2× V2
In this case, you know:
- P1= 1 atm
- V1= 6 L
- P2= 0.80 atm
- V2= ?
Replacing:
1 atm× 6 L= 0.80 atm× V2
Solving:
<u><em>V2= 7.5 L</em></u>
Finally, the volume of the balloon at the higher altitude is 7.5 L.
Learn more:
Answer:Drinking water treatment residues (WTR), generated from the lime softening processes, are commonly reused or disposed of in a number of applications; these include use as a soil amendment or a subsurface fill. Recently questions were posed by the Florida regulatory community on whether lime WTR that contained a small percentage of other treatment additives could appropriately be characterized as lime WTR, in terms of its total element content and leachability. A study was done using a broad range of leaching tests, including a framework of tests recently adopted by the United States-Environmental Protection Agency (EPA) and tests that were modified to account for scenario specific conditions, such as the presence of natural organic matter (NOM). The results of these additional leaching tests demonstrated that certain applications, including disposal in a water body with NOM or in placement anaerobic environment, did result in increased leaching of elements such as Fe, and that a site specific assessment should be conducted prior to using WTR in these types of applications. This study illustrates the importance of leaching test selection when attempting to provide an estimation of release in practice.
Explanation: