Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Question 1. Your friend is having a hard time with the terminology in this unit. He is confused between the terms pure substances, mixtures, elements, compounds, homogeneous, and heterogeneous, as well as the difference between physical and chemical changes. Without just reciting the definitions, explain each term to your friend and provide at least two examples of each that will help him understand the concepts better.
Question 2. A metal cube is found in your lunchroom and you and your colleagues want to know what metal it is. Describe a process that could be used to determine what metal a metal cube is made up of. Remember that you have a table of common densities for metals in Lesson 2. Make sure to explain how and what measurements you will make (highlighting the importance of making measurements to the correct degree of certainty). Also include the mathematical process that you follow to carry out these experiments. Be sure to include proper units in your explanation.
if the natural abundance of K 40 is 0.010% and 3500 disintegration of K 40 occur every 10.0sec, in human body weighing 100kg,then what is the concentration of potassium in clued all isotopes in that body? Assume density of human is 1g/ml
phosphorus trichloride reacts with water according to thefollowing equation.pcl3l 3h2o --gt h3po3aq 3hclaqa 2.10-g
Question- Synthesize 3-methyl-2-hexanoic acid (mixture of E and Z isomers) from starting materials that have 5 or fewer carbon atoms.
A piece of metal with a mass of 151 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 35 mL. What is the density of the metal?
Write the formula for a complex formed between Al3 and 2-2\'-bipyridine (C10H8N2), with a coordination number of 6.
0,245g of the carbonate was found to exactly neutralise 23,6cm3 of HCl with a concentration of 0,150 mol/dm3.
Problem- Draw the Lewis structure (including resonance structures) for methyl azide (CH3N3). For each resonance structure, assign formal charges to all atoms that have formal charge.
Compute the maximum non-expansion work at constant temperature as well as pressure that an electrochemical fuel cell can produce based on the oxidation of ethanol.
Iodine-131 is used in medicine to assess thyroid gland function. How many protons and neutrons are present in an iodine-131 atom?
How many milliliters of a 120 mL solution of 1.51 M BaCl2 must be used to make 16 mL of a solution that has a concentration of 0.3 M Cl-?
When 19 g KOH is dissolved in 97.1 g of water in a coffee-cup calorimeter, the temperature rises from 18.1 °C to 33.81 °C.
When electricity (the flow of electrons) is passed through a solution, it causes an oxidation-reduction (redox) reaction to occur. If the solution contains a metal cation such as Ag+, the flow of electrons will reduce the silver ion, causing solid..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd