The simplest formula for a compound made from element x this 21 nitrogen by mass is

If the pressure on an ideal gas is increased, what will happen to the volume of the gas?

Why do metallically bonded materials conduct electricity well?

4 HF (g) + SiO 2 (s) → SiF 4 (g) + 2 H2 O (l) What mass of water (in grams) is produced by the reaction of 67.0 g of SiO2?

Write the molecular formula in the of the following compounds. calcium bicarbonate sodium peroxide water silver nitrate potassium carbonate sodium carbonate zinc cloride calcium hydroxide magnesium cloride

A medical research lab in Europe is studying a drug's absorption in the blood. Another lab in Japan is trying to delay the elimination of this drug from the blood so that it can act in the body for a longer period of time.

Given the equation 4Al + 3O2 - -> 2Al2O3 if 325 grams of Al2O3 are to be formed, determine the mass of aluminum that must be reacted with excess oxygen. Question 4 options: 101.77g Al 26.9g Al 171.80g Al 6.38g Al

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.

How many grams are in 0.21mol sample of ethyl alcohol?

How is the evidence from a fire scene collected? What should be avoided?

What is covalent compound?