The empirical formula would be and the molecular formula would be
<h3>Empirical and molecular formula</h3>
From the illustration:
C = 40.6 g H = 5.1 g O = 54.2 g
Divide each element by its molar weight:
C = 40.6/12 = 3.4 H = 5.1/1 = 5.1 O = 54.2/16 = 3.4
Divide by the smallest:
C = 3.4/3.4 = 1 H = 5.1/3.4 = 1.5 O = 3.4/3.4 = 1
Thus, the empirical formula is
To find the molecular formula:
[ ]n = molecular formula
where n = molar mass/empirical formula mass
Empirical formula mass = 24 + 3 + 32 = 59
n = 118.084/59 = 2
Thus, the molecular formula is which is more or less the same as the empirical formula.
More on empirical formula can be found here: brainly.com/question/14044066
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Answer:
B
as the flows along the outside edge of a curve it removes rock and soil from the river bank
Answer:
The answer to your question is 0.32 moles of water are needed.
Explanation:
Data
mass of CaC₂ = 10 g
mass of water = ?
Process
1.- Write the balanced reaction
CaC₂ + 2H₂O ⇒ C₂H₂ + Ca(OH)₂
Reactant Element Product
1 Ca 1
2 C 2
4 H 4
2 O 2
The reaction is balanced
2.- Convert mass of CaC₂ to moles
molecular mass CaC₂ = 40 + (2 x 12)
= 40 + 24
= 64 g
64 g of CaC₂ ----------------- 1 mol
10 g ----------------- x
x = (10 x 1) / 64
x = 10/64
x = 0.16 moles of CaC₂
3.- Calculate the moles of water
1 mol of CaC₂ ----------------- 2 moles of water
0.16 moles of CaC₂ --------- x
x = (0.16 x 2) / 1
x = 0.32 moles of water
Answer:
It damaged the environment growth of humans and the population had a negative affect on the environment
Explanation:
Answer:
middle
Explanation:
When the stars are plotted on the Hertzsprung-Russell diagram, most of them fall into the curve called the main sequence. The main sequence stars are 'average' because many stars fall into this category, and these stars burn hydrogen into helium in their core, and they are relatively young ( age of a few billion years) .
Our sun sits in the middle of the main sequence curve in the HR- diagram, which means the it is a yellow dwarf star with a surface temperature of about 6000 K, it has an average size, and it is hot enough for hydrogen fusion—in other words a typical star.