Essay on History: Chemical Reaction and Ml Room Temperature

Submitted By GabbyHoechlin
Words: 586
Pages: 3
Open Document
Data
Volume of hydrogen gas (mL)
9 mL
Room Temperature (C)
18 C
Room Tempertare (K)
291 K
Atmospheric Pressure (torr)
7296 torr

Analysis
Write a balanced equation for the reaction between magnesium nd hydrochloric acid.
Answer: Mg(s) + HCl (aq) MgCl (aq) + H (g)

Stoichiometry
Stoichiometry is a way of describing the quantitative relationships among elements in compounds and among substances as they undergo chemical changes. if you have to calculate just about anything relating to moles or other chemical quantities, the calculations will involve stoichiometry.

The Mole A mole is simply a unit of measurement. The mass of a mole is the gram formula mass of a substance. Mole is the quantity of anything that has the same number of particles found in 12.000 grams of carbon-12. That number of particles is Avogadro's Number, which is roughly 6.02x1023. Moles give us a consistent method to convert between atoms/molecules and grams. It's simply a convenient unit to use when performing calculations.

Balancing Equations
A chemical equation describes what happens in a chemical reaction. The equation identifies the reactants and products, the formulas of the participants, the phases of the participants such as solid, liquid and gas, and the amount of each substance. To balance an equation means the chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products. In other words, the mass and the charge are balanced on both sides of the reaction. All chemical reactions must be balanced—the number of atoms, moles, and ultimately the total mass must be conserved during a chemical process. The quantities are expressed as grams or moles. To balance an equation you must follow these steps:
Determine the correct formulas for all the reactants and products in the reaction.
Begin balancing with the most complicated-looking group. A polyatomic ion that appears unchanged on both sides of the equation can be counted as a single unit.
Save the single elements reactant and products for last, especially if it is hydrogen or oxygen
If you get stuck, double the most complicated-looking group and try again.
Finally, make sure that all coefficients are in the
Show More

Related Documents: Essay on History: Chemical Reaction and Ml Room Temperature

cobalt lab repoert Essay

compound S. At the same time, this lab also familiarized some general coordination compound chemistry and the theory behind with freshman chemistry undergraduates. Dated back to the ancient Perisans and Egyptians, coordination compound has its history of bright red alizarin dye, which is a calcium aluminum chelate complex of hydroxyanthraquinone. In sixteen centry, Andreas Libavius recorded the first scientifically observation of a complete inorganic coordination compound. Later comes the key…

Words 8001 - Pages 33

Mango Wine Essay

fermented grapes or other fruits. The natural chemical balance of grapes lets them ferment without the addition of sugars, acids, enzymes, water, or other nutrients Yeast consumes the sugars in the grapes and converts them into alcohol and carbon dioxide. Different varieties of grapes and strains of yeasts produce different types of wine. The well-known variations result from the very complex interactions between the biochemical development of the fruit, reactions involved in fermentation, and human intervention…

Words 4785 - Pages 20

Pathogram: Chronic Respiratory Failure Essay

| |patient has a history chronic respiratory |patient was ordered a sepsis bundle. |-Provide tracheostomy tube suctioning every 4 hours or as needed. | |failure and large right-sided CVA. He had a | |-Change PICC line dressing after first 24 hours and every 5-7 day or when visibly soiled following | |temperature of 101.8, pulse 110, BP 130/70, 02 |Urinary…

Words 7636 - Pages 31

Essay on Voit Ch2

for Tropical Biology and Conservation, Universiti Malaysia Sabah, Kota Kinabalu 88440, Sabah, Malaysia Marine Biotechnology Institute, Universiti Malaysia Terengganu, Kuala Terengganu, Terengganu, Malaysia a r t i c l e i n f o Article history: Received 14 September 2012 Received in revised form 18 January 2013 Accepted 21 January 2013 Available online 4 February 2013 Keywords: Holothuria edulis Edible sea cucumber Anticancer HL-60 leukaemia cells Functional food a b s t r…

Words 4075 - Pages 17

Fundulus Heteroclitus Lab Report

centrifuged at 8,000 rpm for 1 minute and washed with buffer AW1. The centrifugation was repeated. The samples were washed with buffer AW2 and centrifuged for 14,000 rpm for 3 minutes. The DNA was eluted from the column with buffer AE, incubated at room temperature for 1 minute, and centrifuged at 8,000 rpm for 1 minute. The column was washed with buffer AE and the process was repeated. DNA mass was determined by scanning the DNA on the Nanodrop Spectrophotometer from 260-230 nm with peak absorbance values…

Words 1792 - Pages 8

Essay on Eliza: Immune System and Hiv Positive Patient

Simulation of HIV – 1 Detection 12/03/2012 Purpose: The objective of the experiment is for students to understand the molecular biology of the human immunodeficiency virus and the pathogenesis of acquired immune deficiency syndrome. The experimental concepts and methodology involved with enzyme-linked immune sorbent (ELISA) assays will be introduced in the context of the clinical screening of serum samples for antibodies to the HIV virus. Background: Acquired immune deficiency syndrome…

Words 4592 - Pages 19

Asthma Careplan Essay

|A.J | | Instructor |Professor Conti | Room No. |40A | | Agency/Section |Kings County Hospital | Dates of Care |11/28/2012 | |Transfusions (dates) |none |Reactions (describe) |n/a | Tobacco | # packs/day | Exposed to second hand smoking…

Words 4694 - Pages 19

just a help Essay examples

hair Question 2 (10 points) What should you do if you spill a small amount of acid on your hand? a rinse yourself with the chemical shower and let an adult in the room know b wash yourself in the eyewash and let an adult in the room know c wrap yourself in the fire blanket and let and adult in the room know d rinse your hand in the sink and let and adult in the room know Question 3 (10 points) Which of the following items is permitted in the science laboratory? a candy b chewing…

Words 6539 - Pages 27

Sexually Transmitted Diseases Essay

Science For Living Notes (Compiled) Table of Contents Unit 1 Measurement 5-10 Unit 2 Matter 11-48 Unit 3 Basic materials for maintaining life Air 49-54 Water 55-68 Food 69-71 Other biomolecules of life 72-76 Unit 4 Energy in the Community Electricity 77-78 Heat 78-81 Light 82-91 Sound 92 Simple Machines 93-99 Unit 5 The Physical Environment Weather and Climate 100-113 Soils 114-128…

Words 35677 - Pages 143

Dental Question Bank Essay

Symphysis region Left body of the mandible Left sub-condylar region Right sub-condylar region sub-condylar region 30. Signs and symptoms that commonly suggest cardiac failure in a patient being assessed for oral surgery are A. B. C. D. E. Elevated temperature and nausea Palpitations and malaise Ankle oedema and dyspnoea Erythema and pain Pallor and tremor 31. A cyst at the apex of an upper central incisor measuring 1 cm in diameter is visualized in radiograph and confirmed by aspiration biopsy; which…

Words 33457 - Pages 134