Is it always possible to identify something as an element compound pure substance or mixture

1. What is the molar mass of Aspirin (C9H8O4) ? If you have 360.4 grams of Aspirin, how many moles of Aspirin do you have? How many Aspirin molecules do you have? How many carbon atoms do you have?

to prepare 100 mL of a 0.5 M solution of CuSO4 using water as the solvent. Calculate the amount of solid needed.

Gaseous hydrogen iodide is placed in a closed container at 425 degrees C, where it partially decomposes to hydrogen and iodine: 2HI (g) - -->/<---H2 (g) + I2 (g). At equilibrium it is found that [HI] = 3.59

Which formula represents an ionic compound?

How many electrons would hydrogen required to fill up that first shell?

What's the difference between an iconic bond and a covalent bond? A. an iconic bond Is a bond between charged atoms, while a covalent bond is a bond between neutral atoms B.

4. Given the chemical formulas of the following compounds, name each compound and state the rules applied to determine each name. Score • RbF • CuO • (NH4) 2C2O4 (Note: C2O4 - is called oxalate.)

The earth names for the 30 alien elements in order of atomic number

Worth 30 pts. Liquid vinegar and solid baking soda chemically react to form solid sodium acetate, liquid water, and carbon dioxide gas.

The electron configurations of two unknown elements X and Y are shown. X: 1s22s22p6 Y: 1s22s22p63s23p6 Which statement is most likely correct about the two elements?