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The volume of a rectangular prism is given by the formula V = lwh. What are the general dimensions of the prism if the volume is 6x3 + 9x2- 6x? You will not have an exact dimension but rather an exp
Why the no. of electron changes by one or increases by one in elements?
A steel wire has a diameter of 0.57mm and is 1.5m long. What tension is required to produce an extension of 1.5mm in the wire?
You carefully add 1.25x10 to the 4 joules of heat energy to the sample and find that its temperature rises 18.0 degrees Celsius. what is the samples specific heat?
At some instant of time t1 during the beginning of the lift, the stone is moving upwards and speeding up by 0.5 m/s per second. The following questions are all at time t1. What is the acceleration o
You react (E)-2,7-dimethyl-4-octene with bromine, collect product, and then perform a second reaction with potassium hydroxide.
Question: Two people start from the same point. One walks east at 8 km/hr while the other walks north at 6 km/hr. How fast is the distance between the people changing after half an hour.
A cargo plane traveling towards a positive x-direction at an elevation of 60 m drops a package to a certain village. At what horizontal distance from the village should the package be dropped?
Calculate the energy in the form of heat (in kJ) required to change 75.0 g of liquid water at 27.0 C to ice at 20.0 C. Assume that no energy in the form of heat is transferred to the environment.
The volume of the baloon is now 1.3 L. What is the final pressure of the gas in the balloon? Assume that the temperature and moles of an ideal gas within a balloon are constant. Round your answer to
Calculate the average atomic mass in units of amu for iron (Fe) given that the naturally occurring element exists mainly as a mixture of Fe-56 (91.754%0), Fe-54 (5.845%), and Fe-57 (2.119%). Does yo
A balloon that contains 0.750 moles of gas has a volume of 16.8 L. If the balloon expands to a volume of 25.4 L at a constant pressure and temperature, how many moles of gas would the balloon contai
The heat capacity of H2O(l) is 75.2 J/mol·K and that the heat capacity of H2O(s) is 37.7 J/mol·K, calculate the heat of fusion of water at -15°C.
Which of the following correctly shows a neutralization reaction between a hydronium ion and a hydroxide ion?
It the activation energy for the 2Cl from Cl2 is 243.4 KJ what is the activation energy for the reverse reaction ("cl to Cl2)?
Which of the following best describes the forces that generate geothermal power?
A 5.45g combustible sample is burned in a calorimeter. The heat generated changes the temperature of 555g water from 20.5 C to 39.5 C. How much energy is released by the burning? The specific heat o
On a potential energy diagram, the activation energy is greatest under which of the following conditions?
What is the impact of malaria in terms of health, mortality, and economics? How does DDT work to control malaria?
According to the collision theory and model created to explain the collision theory, why does a catalyst cause a reaction to speed up?
What are the differences and similarities between fingerprinting and DNA fingerprinting? What are endangered species? How do they become endangered?
Biotechnology has allowed us to genetically modify corn with a gene that acts as a pesticide. What could be a possible environmental impact of this development?
Which of the following is the salt in the Br nsted-Lowry neutralization reaction?
A professional emergency responder should be concerned about the following routes of radiation exposure for a person on scene and a person downtown?
Describe the appropriate circumstances for using the example for each term and when it might lead to misunderstanding.