Is the equation above balanced? How do you know? Mg + 2HCl → MgCl2 + H2

A sample of an unknown liquid has a volume of 30.0 mL and a mass of 6 g. What is its density? i need this hella quick

electrolysis breaks down water to form hydrogen and oxygen gas. the word equation that represents this reaction is: water

What are the coefficient to balance this equation NaCl+F2=NaF+Cl2

Why do the inner walls of a vacuum flask have a silver coating?

An element's most stable ion forms an ionic compound with bromine, having the formula XBr. If the ion of element X has a mass number of 85 and has 36 electrons, what is the identity of the element?

Does a gas discharge tube filled with boron emit the same wavelength

a certain solution has a molarity of m = 6.39 mol/l and has a volume of v = 0.550 l what is the value of n

Alcohols are polar molecules. true false

If a normal force of 500 N is acting on two surfaces in contact with a coefficient of friction equal to 0.50, what would be the maximum force of static friction?

Elements with the same number of shells are called? All the element that have the same number of valence electrons and have similar physical and che. ical properties are called?