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Chemistry
Chemistry
College
Complete the chemical combustion reaction of naphthalene, whichdemonstrates the conservation of mass.C10H8 + 1202 >>
Chemistry
High School
A different student is given a 10.0g sample labeled CaBr2 that may contain an inert (nonreacting) impurity. Identify a quantity from the results of laboratory analysis that the student could use to determine whether the sample was pure.
Chemistry
High School
what are the two main categories of matter
Chemistry
College
How do the key results indicate
Chemistry
College
A non-conservative force acting on a particle:_________. A) does work that can depend on the path of motion. B) does work equal to the change in the kinetic energy of the particle. C) does work that is never equal to the change in kinetic energy of the particle. D) can not have an associated potential energy function. E) does work that only depends on the endpoints of the path, not on the path between the endpoints.
Chemistry
High School
Which best describes a chain reaction associated with a nuclear reaction?!!
Chemistry
College
3. Burns from boiling water can be severe, caused by the transfer of energy from the boiling water to theskin as the water cools to body temperature. How much heat (kJ) is transferred from the from 15.0gof boiling water at 100.0C as it hits the skin and cools to 37.2C?
Chemistry
College
0.00035 scientific notation
Chemistry
High School
How might newtons second law relate to an asteriood that is heading toward earth
Chemistry
High School
If density usually increases with decreasing temperature, why does ice float on liquid water? Explain.
Chemistry
High School
Been struggling with this question for a while, some help will be appreciated :)
Chemistry
High School
Radar detectors use radio waves to measure the speed of movingvehicles. Radar detectors have a wavelength of 1.8 meters. What is the frequency of waves from a radar detector?
Chemistry
High School
A hypothesis is based on the analysis of data collected in a controlledexperiment.TrueFalse
Chemistry
College
Which of the following is considered an ionic solid? a) (NH4)2CO3 b) CBr4 c) SeBr2 d) XeF4 e) None of the above is an ionic solid.
Chemistry
High School
What substance is produce when hydrogen burn?...
Chemistry
High School
Read the time line. A timeline. The timeline lists the following years: 100 B C E, 1 C E, 100 C E, 200 C E, 300 C E, 400 C E, 500 C E. What time intervals are used on the time line? one year one hundred years five hundred years one thousand years
Chemistry
High School
Elements on the right side of the Periodic Table are mostly in what state of matter?
Chemistry
College
What are the similarities and differences between a crystal of molecules and a polymer?
Chemistry
High School
List two things that do not change between isotopes of an element
Chemistry
High School
Daniel needed 5.0 x 10 3mm of copper wire for his senior year science project. When Daniel went to the hardware store, he noticed that the unit of measure used for the wire was meters. Calculate the length, in meters, of copper wire Daniel needed for his project.
Chemistry
College
According to Democritus, what is the composition of matter?
Chemistry
High School
By using constants in an experiment, you can make sure that you are testing only one A)experimentB)variableC)hypothesisD)order
Chemistry
College
boling water is considered as
Chemistry
High School
Explain how critical thinking helps scientists analyze information for accuracy and bias.
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