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Problem- 1) For the thermometer (that is most commonly used) to what degree of precision should you record the temperature?2) What is the estimated uncertainty in the reading of the 50mL graduated cylinder that is the most commonly used?
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octane gas reacts wuth oxygen to form carbon dioxide gas and water as a gas. write balanced equation. how many grams of
1 tap water contains dissolved oxygen gas o2aq. adding heat to tap water causes the dissolved oxygen to leave.
Write a series of nuclear equations to represent the bombardment of Al-27 with a neutron to form a product that then undergoes an alpha decay followed by a beta decay
Problem- Calculate the change in pH when 7.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). Calculate the change in pH when 7.00 mL of 0.100 M NaOH(aq) is added to the original..
The IR spectrum of HCN shows three absorption bands at 3312 cm-1, 2089cm-1, and 712 cm-1. Assuming HCN is linear, assign vibrations to the three absorption bands
Solutions of hydrochloric acid caused the light bulb to glow brighter than solutions of acetic acid. How do you account for the difference in behavior between these two compounds
The normal respiratory rate for a human being is 15.0 breaths per minute. The average volume of air for each breath is 505 cm3 at 20 ? C and 9.95 × 10 4 Pa.
three portions of the same liquid are mixed in a container that prevents the exchange of heat with the environment.
A star is estimated to have a mass of 1x10^36 kg. Assuming it to be a sphere of average radius 7.5x10^5 km, calculate the average density of the star in units of grams per cubic centimeter.
What is the Haber process (synthesis). Specifically describe the reaction and industrial importance of the product.
A sample of the Dead Sea Scrolls gives a ^14C decay rate of 731 disintergrations/h. A modern sample gives 920 disintergrations/h. Estimate the age of the Scrolls from these data.
Why is the water bath used to heat the reaction? 4)What is the mechanism of the reaction of phenylmagnesium bromide and CO2? Include the workup steps. 5) In this experiment, it is important to use freshly obtained dry ice. Why?
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