Egil M 18.12 1 How Many Moles in my Name? Purpose The purpose of this experiment is to see how many moles there are in my name when writing with a chalk stick. I will attempt to see how little of the chalk I can use and still see my name clearly. Research question How do we calculate moles? How might we manipulate the variables? Theory So if I am going to find out how many moles there are in my name I have to know how to work it out. The «Mole» is a unit of measurement‚ just like a dozen or
Premium Mass Writing
For those of you who came to the review in class today‚ The stoichiometry question from class. I read the answer to the wrong decimal place. --What is the total mass of oxygen in 0.26mol of Cu2O? Find the percent of oxygen in Cu2O first. The molar mass of Cu2O is 143‚ the mass of just the oxygen in it is 16. % Composition of oxygen would be 16/143 times 100 is 11.19%‚ To determine the mass of Cu2O in 0.26 mol‚ multiply by the molar mass of Cu2O. This gives
Premium Mole Julius Caesar Time
best friends and I thought ourselves to be rebels back then. One time‚ we were forced to stand outside the headmistress’ office for the whole day because we rebelled against the killing of moles that was happening in our school field. We sang a song of our creation‚ called “Were You There When They Crucified the Moles”‚ which was based off a song about Jesus that we sung as a school during assembly. My proudest‚ most memorable moment that happened to me during my primary school days was during my last
Premium High school English-language films Education
CuSO4.H2O‚ we need to find the ratio of mole between anhydrous copper II sulfate and the water vapour by using the formula: In this case‚ the molar mass of: Copper II sulfate (CuSO4) is: 63.55 + 32.06 + 15.99 x 4 = 159.57 g/mol Water (H2O) is: 1.01 x 2 + 15.99 = 18.01 g/mol (e.g. 0.37/18.01= 0.02054 mol.) Then‚ is obtained by: Calculation 1st attempt 2nd attempt 3rd attempt Mole of water (mol) = 0.06163 Mole of anhydrous copper sulfate (CuSO4) (mol)
Premium Mole Sulfuric acid Copper
MOLE UNIT REVIEW WORKSHEET 1. Convert 500.0 g NaCl to formula units. 5.15 x 1024 f.u. Convert 9.8 x 1024 molecules of C2H6 to grams. 4.9 x 102 g The mass of an unknown gas is 11.59 g. The mass of an equal volume of He is 1.45 g. Calculate the molar mass of the unknown gas. 32.0 g/mol Calculate the percentage composition of sulphur in Al2(SO4)3. 28.11% Calculate the molar mass of Co2(SO4)3•6H2O 514.16 g/mol The empirical formula for a compound is C2H5O and its molecular mass
Premium Oxygen Molecule Mole
Mole Ratios Lab October 10‚ 2013 Mrs. Oliver Noah Kent AP Chemistry Block 3/4 Laboratory #4: Mole Ratios I. Hypothesis: If copper wire is placed in an aqueous solution with silver nitrate‚ then silver crystals will grow on the wire surface and the solution will gradually take on the color of Copper (II) ions. The relative quantities of reactants and products in this chemical reaction can be determined by measuring the mass of copper wire consumed in the reaction and the mass of silver crystals
Premium
probably they too) have grown tired of the same food items on the menu: burgers‚ brats‚ and the occasional delivery pizza. You want to do something different and why not? If you are stumped on ideas‚ shake it up and try cooking authentic Mexican food. Mole is one of the most traditional dishes from our neighbors to the south and is a delicious place to start when deciding between Mexican recipes. It is a sauce that is widely considered to be difficult to prepare if you are not native to Mexico. But don’t
Premium
CHM 266‚ Section 55 Shanel Warren Tiffany‚ Princess‚ and Wei October 2‚ 2013 Determining the Mole Ratios in a Chemical Reaction Introduction The purpose of this lab was to determine the mole ratios of the reactants hypochlorite ion (OCI ) and thiosulfate (S O ) when reacted in a chemical reaction. A chemical equation gives the mole ratios of the reactants and products involved in the chemical reaction. When some formulas of the products are not known‚ experimental measurements
Premium Chemical reaction Sodium Chemistry
Pekanova Natasha‚3Aa Second Best by D. H. Lawrence David Herbert Lawrence (11 September 1885 – 2 March 1930) was an English novelist‚ short-story writer‚ poet and essayist. He was born in the mining village of Eastwood‚ near the city of Nottingham in central England. Lawrence was an unconventional man both in his lifestyle and his writings. He believed that people needed beauty to live‚ and he was extremely sensitive to all forms of beauty in nature. His best work reveals his love of life and
Premium D. H. Lawrence Love Sons and Lovers
there are unfortunate couples that can’t have even one. If the woman is pregnant everyone is very excited towards the baby especially the father. But what if the baby in your womb that you thought you has is not actually a real one; but a cluster of H-mole. The fetus or developing baby‚ the placenta (or after-birth)‚ which has many functions including the feeding of the baby and the removal of its waste products. The placenta is made of millions of cells called trophoblasts. These two parts normally
Premium Nursing Nursing care plan