Answer:
Explanation:
Density is found by dividing the mass by the volume.
The mass of the object is 11 grams and the volume is 13 milliliters.
Substitute the values into the formula.
Divide.
Round to the nearest hundredth. The 6 in the thousandth place tells us to round the 4 to a 5.
The density is about <u>0.85 grams per milliliter.</u>
<u>Answer:</u> The volume taken from the reagent bottle must be 72.91 mL
<u>Explanation:</u>
To calculate the volume of concentrated solution, we use the equation:
where,
are the molarity and volume of the concentrated solution which is the reagent bottle.
are the molarity and volume of diluted solution which is the solution to be prepared.
We are given:
Putting values in above equation, we get:
Hence, the volume taken from the reagent bottle must be 72.91 mL