In the reaction C + 02CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxyger would be needed in the reaction?

18g

54g

72g

90g

When the Soviets created the borders of their Central Asian and caucus republics, the paid little attention to where each region's ethic group lived. Ethnic-related disputes exist along every sherd boundary in Central Asia. True False

Between what two mountain ranges is the deccan plateau located

What are the causes of conflict in the Middle East?

1. What is the name of the star which is almost directly above the north pole of the Earth? Draw a diagram to illustrate how an observer in the northern hemisphere can locate this star.

What georgia region is the most populated.

According to Alonso, Mexican nationalist ideology completely ignores the contributions of which group that was part of colonial Mexican society? A) European whitesB) African slavesC) CreolesD) conquered indigenous peoples

Planets travel at a constant rate around the Sun. a. True b. False

Why do the North and South pole experience seasons differently than the rest of the planet? Why do they have periods of continuous daylight or continuous darkness?

According to the International Astronomical Union, which of the following is one of the criteria for an object to classified as a Planet? Select all that apply.

What physical features are the five largest cities in the u. S. Near?