Answer:
Calculate the mass of silver phosphate produced if 30.0 grams of silver acetate completely reacts with sodium phosphate.
Answer:
C₂H₃₂
Explanation:
Given parameters:
Mass percentage of carbon = 42.88%
Mass percentage of hydrogen = 100 - 42.88 = 57.12%
Molecular weight = 56.02
Unknown:
Molecular formula = ?
Solution:
To solve this problem, we need to find the empirical formula of the compound first. The empirical formula is the simplest formula of a substance.
Therefore;
Elements Carbon Hydrogen
Percentage
composition 42.88 57.12
Molar mass 12 1
Number of moles 42.88/12 57.12/1
3.57 57.12
Simplest
ratio 3.57/3.57 57.12/3.57
1 16
Empirical formula of the compound is CH₁₆
Molar mass of CH₁₆ = 12 + 16(1) = 28g/mol
Multiplying index = 
= 
= 2
Molecular formula = (CH₁₆)₂ = C₂H₃₂
Rigor mortis is the stiffening of the body after death. After death, the body begins to get cold. From about two to six hours after death, the muscles start to stiffen, probably because the actin and myosin filaments of the muscle slide into each other. The rigor mortis starts at the eyelids, jaw and neck and then slowly spreads to all parts of the body within six hours.
Contrary to popular belief, rigor mortis will occur more quickly in high ambient temperatures than in cold conditions. This is because the underlying chemical reaction occurs faster at higher temperatures.
Learn more in brainly.com/question/14139041
Molar mass BeI2 = 262.821 g/mol
Therefore:
1 mole BeI2 ----------- 262.821 g
0.02 moles ----------- ??
0.02 x 262.821 / 1 => 5.25642 g
Answer:
Correct option is
A) all living organisms
animal,plant,bacteria somehow everybody is dependent on nitrogen same as oxygen!
