Select the statements that are tru about the role light plays in this system model.
The half of Earth and the half of the Moon that face the Sun are lit.
Half of the Earth is always it, but the amount of Moon lit changes throughout the month.
Both the Sun and Moon are light sources in this system
The Moon shines as a result of light reflected from the Sun,

What is the molar mass of a gas that has density of 2.054 g/l

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg