Answer:
Select one of the readings in this unit and in at least one hundred words, discuss how immediacy, foreshadowing, and commentary work to show author's purpose, meaning, or tone and style.
Explanation:
Select one of the readings in this unit and in at least one hundred words, discuss how immediacy, foreshadowing, and commentary work to show author's purpose, meaning, or tone and style.
Answer:
B
Explanation:
elements are just one type of atom like iron or phosphorus
1.5 % is the percent yield in the reaction.
Explanation:
Given that:
original mass of the sample used in reaction = 1.897 grams
product formed after decomposition = 1.071 grams
The reaction for the decomposition:
Mg(HCO3)2 (s) ⇒ CO2 (g) + H2O (g) + MgCO2 (s)
It says that 1 mole of Mg(HCO3)2 yielded 1 mole of MgCO2 on decomposition
68.31 grams/mole or 68.31 grams of MgCO2 is formed
percent yield = x 100
putting the values in the equation:
percent yield =
= 0.015 x100
PERCENT YIELD = 1.5 %