Answer:
115g/mol
Explanation:
To get the molar mass, we know that the it is equal to the mass divided by the number of moles. We have the mass but we do not have the number of moles.
We get this by working through the solution information. Firstly, we need to know the number of moles in 750ml for a molarity of 0.29m
Now, since 0.29 moles is present in 1000ml, x moles will be present in 750ml
The value of x is obtained as follows:
x = (750 * 0.29)/1000 = 0.2175 moles
Now since we have the number of moles, we can then obtain the molar mass.
Molar mass = mass/number of moles = 25.0g/0.2175 = 114.94 approximately 105g/mol
Answer:
See below
Explanation:
P1V1 = P2V2 Since T remains constant
P1V1/V2 = P2 Atmospheric pressure is 760 mm Hg
760 (61.26) / .281 =<u> 165,685.4 mm Hg</u> ( 218 ATM)
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<u>Answer:</u> The correct answer is False.
<u>Explanation:</u>
There are three types of solution: acidic, basic and neutral
To determine the type of solution, we look at the pH values.
- The pH range of acidic solution is 0 to 6.9
- The pH range of basic solution is 7.1 to 14
- The pH of neutral solution is 7.
When a strong acid and a weak base reacts, it leads to the formation of acidic solution. The pH of these solutions are found to be below 7.
When a strong base and weak acid reacts, it leads to the formation of basic solution. The pH of these solutions are found to be above 7.
When a strong acid and strong base or weak acid and weak base reacts, it leads to the formation of neutral solutions. The pH of these solutions are found to be equal to 7.
Hence, the correct answer is False.
Answer:
Methane
Explanation:
Alkanes have the molecular formula of "CnH2n+2" which means for every carbon molecule there are two hydrogens plus two more. For example when there is one Carbon there are four hydrogens, this molecule is known as "Methane"