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A ball is dropped from rest from a height of 20.0 m above the ground:
i) How long will it take the ball to hit the ground?
ii) What will be the ball's velocity just before it hits the ground?
which of these has the highest vapor pressure in a sealed container at a temperature cool enough to produce a liquid? a). CH2CH2OH b). NCl3 c). H2 D). N2 e). CH2OH
what is the molar concentrations for those two. The solution volumes are additive. Thank you so much I can't figure this out and I've been looking at it for 2 hours. I need it for my lab report.
Hydrogen gas can produced in the laboratory through the reaction of magnesium metal with hydrochloric acid. What is the volume, in liter, of H2 gas produced at 24°C and 835 mmHG, from the reaction of 12.0 g of Mg
exactly 18.9 ml of water at 26.0 c are added to a hot iron skillet. all of the water is converted into steam at 100c.
Exactly 20.00 mL of standard 0.1171 M Ca(OH)2 are titrated with a solution of citric acid, H3C6H5O7. If 17.43 mL of the citric acid solution are required to reach the endpoint, what is its molarity
Find out the empirical formula of the compound. Explain if the compound has a molar mass of 142.11 g/mol explains what is the molecular formula of the compound
It takes 51.0j to raise the temperature of an 11.4g piece of unknown metal from 13.0c to 25.0c. What is the specific heat for the metal
Problem- Assume a constant ^14C/^12Cratio of 13.6 counts per minute per gram of living matter. A sample of a petrified tree was found to give 1.3 counts per minute per gram. How old is the tree
How much of a 500 ml bottle of 1.00 molar KCl solution should be diluted with deionized water to give 200.00 ml of a 0.100 molar solution
calculate the energy in the form of heat in kj required to change 75.0 g of liquid water at 27.0 degc to ice at -20.0
A 4.10 g nugget of pure gold absorbed 274 J of heat. What was the final temperature of the gold if the initial temperature was 27.0°C? The specific heat of gold is 0.129 J/(g·°C).
The heat capacity of water is 4.18 J/g-deg. You may assume that resulting solution of potassium hydroxide has the same heat capacity as that of pure water. The molecular weight of K is 39.1 g/mol
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