Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Determination of empirical formula using magnesium oxide
Determination of empirical formula using magnesium oxide
Determination of empirical formula using magnesium oxide
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Finding the Empirical Formula for Magnesium Oxide
The Results
In order to work out the ratio for magnesium and oxygen, I will have
to calculate the amount of magnesium and oxygen used.
[IMAGE]
From these results, and knowing that the Ar for Magnesium is 24, and
the Ar for Oxygen is 16, I can find the number of moles for Magnesium
and Oxygen.
Investigation 1:
Magnesium = 36.08 - 36.04
= 0.04g
Oxygen = 36.11 - 36.08
= 0.03g
Magnesium Ar = 24 Oxygen Ar = 16
--------------------------------
[IMAGE]
Investigation 2:
Magnesium = 36.10 - 36.03
= 0.07g
Oxygen = 36.14 - 36.10
= 0.04g
Magnesium Ar = 24 Oxygen Ar = 16
--------------------------------
[IMAGE]
Formula:
Magnesium 42 : 36 Oxygen [ -- 3
-------------------------------
Magnesium 14 : 12 Oxygen [ -- 2
Magnesium 7: 6 Oxygen
= Mg 0
To ensure that my final answer was as accurate as possible, I did not
round any numbers until the end to get the most accurate final
equation. Likewise for test 1, 3, and the average.
Investigation 3:
Magnesium = 36.10 - 36.03
= 0.07g
Oxygen = 36.19 - 36.12
= 0.07g
Magnesium Ar = 24 Oxygen Ar = 16
--------------------------------
Moles:
Magnesium. Mass Oxygen. Mass
Ar Ar
= 0.07 = 0.07
24 16
= 0.002916 = 0.004375
[IMAGE]
=======
To ensure that my final answer was as accurate as possible, I did not
round any decimals off until the end to maintain accuracy throughout
the calculation.
Average of Investigation 1, 2, and 3
Magnesium mean = (0.04 + 0.07 + 0.07)
3
= 0.06g
Oxygen mean = (0.03 + 0.04 + 0.07)
3
= 0.047 (2 s.f.)
Magnesium Ar = 24 Oxygen Ar = 16
The mass of Mg + the mass of O2=mass of MgxOx. Knowing the mass of
Magnesium is an important element necessary healthy bones and teeth. The use of all muscles, and nerves convert it into energy for daily living. It is also instrumental in maintaining adequate levels of calcium in the blood. Having a therapeutic magnesium level helps prevent cardiovascular disease and reduces the risk of bone loss. The body of the adult human contains about 2000 mEq of Mg. Half of this amount stays within the skeleton and the other half in soft tissues (Wacker and Parisi 1968). The normal concentration in the blood is somewhere in the ranges of 1.7-2.3 mg/dL (Magnesium, 2013)
the acid was at 14 C the magnesium took 141 seconds to react and 27 C
Using the previously calculated Kf, the molar masses of unknown substances A, C, and D were able to be calculated. However, given that the original Kf was slightly larger than the theoretical value, the molar
2Li : H2 2 : 1 ratio 0.0154 : 0.077 Lithium = 0.0154 moles Relative atomic mass of Lithium. Ar = MASS _0.
The three stable oxygen isotopes 16O, 17O, and 18O will be used to explain the notation and basic definitions. The oxygen isotope with mass number 16 contains 8 protons (oxygen) and 8 neutrons and is denoted by 16O. It is by far the most abundant (99.76%) of the three stable oxygen isotopes. This isotopic differentiation is commonly expresses and described by δ. In the case of evaporation processes it is defined as the ratio of the isotope content of the liquid (solid) and of the vapour phases (Araguas-Araguas et al., 2000). The isotopic composition, δ, of a sample, determined by mass spectrometric methods, is measured with respect to a
Mass of O = Mass of crucible, cover, KClO3 and MnO2 after heating (Step # 11) - Mass of crucible, cover, KClO3 and MnO2 before heating (Step # 5)
Magnesium, also known as atomic number 12 was discovered in 1808 by Sir Humphry Davy who was a British Chemist best known for his experiments in electro-chemistry and his invention of a miner's safety lamp (BBC News, 2014). Magnesium is a chemical element with symbol Mg. Magnesium is a light, fairly strong, whitish, silver Alkaline Earth Metal that is the eighth most abundant element in the Earth's Mantle and the fourth most common element on earth, making up 13% of the planet's mass (Winter, 2011). Its atomic weight is 24.305.
Magnesium is found in large amounts throughout our bodies. We obtain it predominantly from dietary sources. We can also obtain magnesium in many other places since it is the seventh most prevalent element from our universe. The earth’s crust contains large amounts of this element and we can obtain it from the minerals dolomite and carnallite. It is, however, most commonly extracted from our ocean waters.
Number of moles of〖 K_2 CrO〗_4, mol = (4.0 ×〖10〗^(-2) mol L^(-1))(5.0×〖10〗^(-2) L)= 2.0×〖10〗^(-3) mol
with a tong to see if the magnesium had started to burn and also to
How long does it takes a strip of magnesium to dissolve in a solution of water and acid
Magnesium is one mineral that needs to be present in our diet. Some people are not familiar with Magnesium and its effect like they are familiar with other vitamins, such as vitamin A, D, C, or Calcium.
Aim: The aim of this experiment was to determine the empirical formula of magnesium oxide.
Based on your experiments what is the formula of the colorless gas that is released when heating the malachite?