If a compound is separated into separate parts does the substance remain the same substance

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 13.2 g of carbon were burned in the presence of 53.9 g of oxygen 18.7 g of oxygen remained unredacted. What mass of carbon dioxide was produced?

Drum X is 12 full of oil and Drum Y, which has twice the capacity of Drum X, is 23 full of oil. If all of the oil in Drum X is poured into Drum Y, then Drum Y will be filled to what fraction of its capacity?

Geologic evidence shows that Earth's tectonic plates can move thousands of kilometers across the Earth's surface. These movements A. do not change the Earth's surface at all. B. occur gradually over millions of years. C. occur due to human activity.

If silver has a density of 10.5 g/cm3 and gold has a density of 19.3 g/cm3, which would have the greater mass, 5 cm3 of silver or 5 cm3 of gold?

A 2.00 L bottle of Dr Pepper contains 225 g of sucrose, C12H22O11. What is the molality of that solution?

Why does water vapor exist naturally in the atmosphere

How is the volume of a gas related to its concentration of particles? As the volume of a contained gas expands, its pressure concentration of particles will increase.

How does the density of one penny compare with the density of two pennies

How many valence electrons does beryllium have

How does the arm wrestling tournament represet what Rutherford found out about the positive and negative charges and atom