State the difference between the atomic structures of helium-3 and helium-4

A molecule of a certain compound contains two nitrogen atoms and four oxygen atoms. What is the molecular formular for this compound?

If the reaction is at dynamic equilibrium at 500 K, which statement applies to the given chemical system? The forward and reverse reactions no longer occur. The rates of the forward and reverse reactions are unequal.

What is the name of the experiment that Rutherford conducted that led to three major discoveries of the atom?

How many grams are in 0.25 mol KNO3? The molar mass of KNO3 is 101 g/mol.

How much energy would it take to heat a section of the copper tubing that weighs about 630.0 g, from 13.12 ∘C to 27.91 ∘C? Copper has a specific heat of 0.3850 (J/g) ⋅∘C. Express your answer to four significant figures.

Name the compound CH3CH2CH2C (CH3) 2CH2CH3

What is the primary source of energy that generates most ocean waves

Six students were asked to perform an experiment to see how the mass of a pendulum affected its period. They were given supplies and asked to design an experiment to test the impact that the mass of the bob had on period.

How would the experiment have compared if twice the mass of zinc were used

Identify the major ionic species present in an aqueous solution of C12H22O11 (sucrose).