A compound has an empirical formula of Na2CO3 and a molar mass of 318g/mol. Find its

molecular formula.

Which substance is acting as the Brønsted-Lowry acid in the following chemical reaction? NH4 + OH - yields NH3 + H2O A. NH4+ B. OH- C. NH3 D. H2O

If the 3d and 4s bands overlap in a metal atom, what is the maximum number of electrons for this composite band

Heat can be transferred through conduction, convection, and radiation. What is necessary in order for heat to be transferred by conduction?

Jasper made a list of the properties of electromagnetic waves. Identify the mistake in the list. 1. Are made up of an electric field and a magnetic field 2. Are longitudinal waves 3. Can travel through space 4.

What conclusions can be drawn about the greater number of sunflower sprouts compared to the number of birch tree sprouts in both the experimental and control groups?

Audrey is driving 50 miles in 2 hours what is her average speed?

Water has a specific heat of 4184 J / (kgK) how much energy is needed to increase the temperature os a kilogram of water 5C?

A student noticed while doing the neutralization experiment that the calorimeter kept getting warmer. how would this error affect the final calculation for the δhneut of each reaction? would it be overestimated, underestimated or remain unaffected?

A solution contains 45 grams of nitrogen gas and 40 grams of argon. What is the mole fraction of argon in this solution?

How is an animal cell related to tissue and organs