The MSDS for benzene indicates that it is a clear liquid that has a substantial vapor pressure. It has a health rating of 2, a f
2 answers:
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Answer:
Approximately .
Explanation:
This question can be solved using Hess's Law.
Start by considering: how can the first three reactions (with known values) be combined to produce the reaction
?
Here's one possible combination:
- Include the first reaction once, without inverting.
- Invert the second reaction and include it once.
- Include the third reaction after multiplying all its coefficients by two.
In other words, if ,
, and
denote the three reactions with know
values, respectively, then
will give the required reaction
.
By Hess's Law, the value of the reaction
will thus be:
.
Answer: A volume of 600 mL of 3.0 M solution can be prepared by using 100.0 mL OF 18 M
.
Explanation:
Given: = ?,
,
Formula used to calculate the volume is as follows.
Substitute the values into above formula as follows.
Thus, we can conclude that a volume of 600 mL of 3.0 M solution can be prepared by using 100.0 mL OF 18 M
.
The percentage of sugar in the solution is 1%
To solve this question, we need to find the percentage of 6 out of 600.
Data given;
- mass of sugar = 6g
- mass of solution = 600g
This is the rate or proportion of a substance in the total value and multiplied by 100.
The percentage of sugar in the solution is calculated by
The percentage of sugar in the solution is 1%
Learn more about percentage here;