The red appearance of Mars is caused by the presence of what? My answers are methane, hydrogen, carbon dioxide, iron oxide!

A compound has an empirical formula of C2H5. What is true about this empirical formula? A. It models the structure of the compound. B. It shows the ratio of elements in the compound. C. It gives the mass of each atom in the compound. D.

How many pounds does 5cm cubed of gold weigh

Zoe used two examples to represent two different states of matter. Example 1: Fish swimming around one another in an aquarium Example 2: Fish swimming away from one another in the ocean Which statement is correct?

Describes something that is quantized

Atoms with loosely held valence electrons have 1. high ionization energy and high electron affinity. 2. high ionization energy and low electron affinity. 3. low ionization energy and high electron affinity. 4.

Draw an ecosystem with 10 biotic and 5 abiotic factor

Which organism is responsible for cleanup in this ecosystem? coyote vulture prairie dog grasshopper or prairie grass

What would happen if you tried to sqeeze a gas into a smaller container?

Paint, paint thinners and some cleaning agents can weaken the shell of a hard hat and may eliminate

A 10 chunk of metal has a specific heat of 0.25 J/g ºC. The temperature is changed from 10ºC to 45ºC. How much heat is required?