How many ears do cray fish have

Which of the statements describes a chemical property? a) Iodine (a purple solid) becomes a purple gas. b) Titanium is less dense than iron. c) Sugar burns in air to form water and carbon dioxide. d) Water boils at 100 ∘C.

Using a molar heat of combustion of hexane (C6H14) - 4163 kJ/mol, the mass of hexane required to increase the temperature of 1.76 L of water from 21.0°C to 70.0°C is a. bc g. Put your answer for a. bc in the blank

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A 3.90 g sample of Cl2 reacts with PCl3 to form 11.45 g of PCl5 according to the reaction below. How much PCl3 is needed? [Hint: You do not need to calculate moles to answer.] PCl3 + Cl2 - > PCl5 Amount of PCl3: Show work here

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What is the element Ar classified as in the periodic table?

Two objects, one heavy and one light, travel at one of two speeds. Which will have the most inertia?

Which statements correctly describe water boiling in a pot? Air bubbles from the atmosphere are being absorbed. The water's internal kinetic energy is increasing. The water is gaining internal potential energy. The water's temperature is increasing.

Biofuel is any fuel that is produced from living or once living matter in a short period of time, days, weeks, or even months.

How are revolution and year related