Answer:
4.1 × 10⁻⁵ M
Explanation:
Let's consider the following balanced equation.
FeCl₃(aq) + 3 AgNO₃(aq) → 3 AgCl(s) + Fe(NO₃)₃(aq)
We can establish the following relations:
- The molar mass of AgCl is 143.32 g/mol.
- The molar ratio of AgCl to FeCl₃ is 3:1.
When 3.5 mg of AgCl are collected, the moles of of FeCl₃ that reacted are:
The sample has a volume of 200 mL (0.200 L). The molar concentration of FeCl₃ is:
Calcium carbonate is most likely to dissolve in water with:
e. Lots of Carbon dioxide and colder temperature.
Explanation:
- Calcium carbonate is very sparingly soluble in water. However, it has been observed to dissolve in cold water with higher concentration of Carbon dioxide.
- The reason behind the observation is the formation of Calcium bicarbonate which is soluble in water.
- Higher concentration of Carbon dioxide in water turns it acidic. When this acidic water reacts with calcium carbonate it forms Calcium bicarbonate which is soluble in water.
- So,Calcium carbonate is most likely to dissolve in water with lots of Carbon dioxide and colder temperature.
Answer:
it is regurgitated and an owl pellet
<u>Answer:</u> The percentage abundance of isotope is 69 %.
<u>Explanation:</u>
Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.
Formula used to calculate average atomic mass follows:
.....(1)
We are given:
Let the fractional abundance of isotope be 'x'
- <u>For isotope:</u>
Mass of isotope = 62.93 amu
Fractional abundance of isotope = x
- <u>For isotope:</u>
Mass of isotope = 64.93 amu
Fractional abundance of isotope = (1-x)
- Average atomic mass of copper = 63.55 amu
Putting values in above equation, we get:
Converting this fractional abundance into percentage abundance by multiplying it by 100, we get:
Hence, the percentage abundance of isotope is 69 %.
Answer:
C
Explanation:
For an organism scientific names the first part is the genus and the second is the species