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A child on ice skates with a mass of 35 kg and a velocity of 7.5 m/s [S] undergoes a collision with a second child on ice skates with a of mass 45 kg and a velocity of 3.5 m/s [S30oE]. If the two children become entangled during the collision, determine their final velocity.
Need to have a chart of the atoms and elements, so I can tell which is which on the assignment also need to draw a picture of the atom of oxygen
Hydrogen gas can be produced by reacting metallic sodium with water (do not attempt this at home!). (a) Write a balanced reaction for the formation of hydrogen gas from sodium and water. (b) Using the table of reduction potentials show that this proc..
An unknown metal with a mass of 28g absorbs 58J of heat. Its temperature rises from 31.1C to 39.9C. Calculate the heat capacity of the metal ?
How do toxicologists determine which exposures may cause adverse health effects? How does the information apply to what you are learning in the course? What were the objectives of this toxicity testing?
Problem- If the enthalpy of fusion of ice is 6020 J/mol. and this value and does not vary appreciably over the range of - 5.0 - +10.0 0C. Determine the entropy change if one mole of ice is melted by heat supplied from the surroundings at a tempera..
6 M HNO3 could not be found on the reagent shelf. Instead, 6 M HCL is added to the test solution. Instead, 6 M HCl is added to the test solution. a) What affect does this have on the test for sulfide ion. Explain
Question- What is the pH when a 1.00ml of 1.00 M HCl is added to 1.00L of solution containing 0.700 M acetic acid and 0.600 M sodium acetate? Ka of acetic acid is 1.8*10^-5.
a 14 l of rigid container is filled with 10 kg of r-134a at 300 kpa. determine the temperature oc and total enthalpy kj
To a solution containing both acetic acid and sodium acetate, HCl is added. Beside hydroxide ions, which species will react with the extra protons from HCl to keep the pH from changing
Problem- Consider how the I-Cl bond is polarized and predict the product which results when this mixed halogen adds to 1-methylcyclohexene. Include relevant region- and/or stereochemistry in your product's structure.
Draw the structure(s) of the carboxylic acids with the molecular formula C5H10O2 that contain a branched carbon chain.
An element has a mass of 207 and has 125 neutron in its nucleus. how many protons and electrons does it have and where are they located
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