Select all the correct answers. In the diagram, the Sun, Earth, and Moon are in perfect allgnment. Which two concluslons can be drawn based on the dlagram?
Earth's
shadow
Earth
Sun
Moon
O
O
O
O
O
An observer on the Moon sees a solar eclipse.
An observer on the Moon sees a lunar eclipse.
An observer on the Moon sees a partial eclipse.
An observer on Earth sees a lunar eclipse.
An observer on Earth sees a solar eclipse.

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Which process is represented by the pv diagram? a. the isobaric process b. the isovolumetric process c. the isothermal process d. the adiabatic process

What structural formula represents 4 electrons shared between two atoms?