Answer:
Explanation:
In this chemistry lab, students investigate how to build and launch a simple rocket that uses hydrogen and oxygen gases that will be mixed to propel the rocket (large bulb plastic pipette). Students will understand the principles of combustion reactions, kinetics, stoichiometry of reactions, activation energy, explosive mixtures, rocketry, and different types of chemical reactions. Students will explore and determine the proportions of hydrogen and oxygen mixture that will achieve the best launch results. Students will compare the balanced chemical reaction of hydrogen and oxygen with their lab results; students should discover that the optimal distance occurs when the mixture of hydrogen and oxygen is two to one hydrogen, oxygen mixture ratio and this can be determined theoretically from the balanced chemical reaction equation. Students will perform the lab, collect data, and discuss, compare, and contrast their lab findings with the balanced chemical reaction equation. Students will present their structured inquiry investigations using a power-point presentation. Other groups along with the teacher will assess each group by using a provided rubric. Group assessments will be the deciding assessment for the final lab score. A follow up activity could investigate how NASA scientists launch real rockets into space and propose a procedure to investigate and collect data on a launching a heavier object at the school football field.
Answer:
Atoms are composed of electrically charged particles and moving electric charges possess an associated magnetic field.
Explanation:
An atom is made up of electrons arranged in shells. Electrons are negatively charged. These charged particles produce an electric field which can interact with an external electric field to give information about atomic structure.
Similarly, a moving electron produces an associated magnetic field which can couple with an external magnetic field to give information about atomic structure.
Answer:
The answer to your question is Q = 355.64 J
Explanation:
Data
Heat = Q = ?
Temperature 1 = T1 = 20°C
Temperature 2 = T2 = 37°C
mass = m = 5 g
Specific heat = Cp = 4.184 J/g°C
Formula
Q = mCp(T2 - T1)
-Substitution
Q = (5)(4.184)(37 - 20)
-Simplification
Q = (5)(4.184)(17)
-Result
Q = 355.64 J
Hey there!:
Number of moles = 3.33 moles of neon
Volume = 13.4 L
Pressure = 3 atm
R = 0.0821 L.atm/mol*K
Therefore:
T = 3.0 * 13.4 / 3.33 * 0.0821
T = 40.2 / 0.2734
T = 147 K
k in C :
ºC = K - 273
147 - 273
T = - 126ºC
Hope that helps!
Answer:soda
Explanation:A homogeneous mixture is a mixture in which individual components of the mixture cannot be identified and since individual components of soda cannot be identified it is a homogeneous mixture