What is the smallest unit of an element that still can be identified as a specific element?

Complete combustion of a sample of a hydrocarbon on excess oxygen produces equimolar quantities of carbon dioxide and water. Which of the following could be the molecular formula of the compound? A. C2H2 B. C2H6 C. C4H8 D. C6H6

Non renewable resources like petroleum eventually

Four galaxies are gravitationally bound, with each maintaining its own shape. What is this structure called?

Atp production in the flight muscle of the fly lucilia sericata results almost exclusively from oxidative phosphorylation. during flight, 187 ml of o2/hr·g of body weight is needed to maintain an atp concentration of 7.0 μmol/g of flight muscle.

What part of the statement below is incorrect? Rewrite the statement such that it displays the correct reasoning behind why nonpolar molecules do not dissolve in water. "Water molecules repel nonpolar substances away from itself."

Describe how the periodic table differentiates between metals and nonmetals. I need a very informative description/explanation on this.

When the ideal gas law is arranged as shown below, what property of the gas is being solved for (represented by the X) ? x equals PV over nR

Which element could chlorine bond with to form an ionic compound? helium oxygen fluorine sodium

A scientist conducted one trial experiment and got unexpected results. how can the scientist increase confidence in the results

A board measures 212 inches. How many feet is this?