Answer:
1M
Explanation:
First, let us write a balanced equation for the reaction. This is illustrated below:
NaOH + HCl —> NaCl + H2O
From the equation above,
nA (mole of acid) = 1
nB (mole of the base) = 1
Data obtained from the question include:
Vb (volume of base) = 50mL
Mb (Molarity of base) = 0.2M
Va (volume of acid) = 10mL
Ma (Molarity of acid) =?
Using MaVa/MbVb = nA/nB, we can calculate the molarity of the acid as follow:
Ma x 10/0.2 x 50 = 1
Cross multiply to express in linear form
Ma x 10 = 0.2 x 50
Divide both side by 10
Ma = (0.2 x 50)/10
Ma = 1M
The molarity of the acid is 1M
Answer:
CH₂O
Explanation:
From the question given above, the following data were obtained:
Carbon (C) = 39.9%
Hydrogen (H) = 6.7%
Oxygen (O) = 53.4%
Empirical formula =?
The empirical formula of acetic acid can be obtained as follow:
C = 39.9%
H = 6.7%
O = 53.4%
Divide by their molar mass
C = 39.9 / 12 = 3.3
H = 6.7 / 1 = 6.7
O = 53.4 / 16 = 3.3
Divide by the smallest
C = 3.3 / 3.3 = 1
H = 6.7 / 3.3 = 2
O = 3.3 / 3.3 = 1
The empirical formula => CH₂O
Answer: When the effective nuclear charge decreases, electrons are loosely held thereby making it easier for electrons to be lost.
Explanation:
Explanation:
1) it gives you a visual of what you will be doing
2) you can find more variables when looking at it compared to just thinking of it
3) gives you new insights on what is yet to come
4) allows you to answer some questions and begin testing
