A large sample of solid calcium sulfate is crushed into smaller pieces for testing. which two physical properties are the same for both the large sample and one of the smaller pieces?

The molecule hydrogen fluoride (hf) contains a polar bond h - f, where fluorine is more electronegative than hydrogen. which is the appropriate representation of the h - f bond?

Question 1 of 23 The diagram below shows two mugs of coffee mug A and mug B). Both mugs have the same temperature, but mug A contains 30 ml, while mug B contains 5 thermal energy in both mugs? B 30°C 30°C .

Compared with the electronegativities of the elements on the left end of a particular period, the electronegativities of the elements on the right side of that same period tend to be A. lower. B. higher. C. the same. D. unpredictable.

What is the chemistry sign for floride?

If the enthalpy value for a reaction is negative, what does that indicate about the reaction?

Which societal problem can be solved in part by scientist identifying areas of high biodiversity

How many water molecules (H2O) can be produced from 6 molecules of hydrogen gas (purple) reacting with 6 molecules of oxygen gas (turquoise) ? Which reactant is the limiting reactant? Oxygen and hydrogen molecules A.

The combustion of propane occurs when propane interacts with oxygen gas to produce water and carbon dioxide in the following reaction: C3H8 (g) + 5O2 (g) = > 3CO2 (g) + 4H2O (l) If 2 moles of propane C3H8 (g) react at 373 K in a volume of 2.

If you can walk 2.1 miles in 35 minutes, how many days will take you to con the United States (3350 mi) if you walk 8 hours a day

How many electrons are in 1.01 oz of a pure gold coin?