Na2CO3 + CO2 + H2O → NaHCO3

1. Which of the following coefficients would correctly balance the

chemical reaction shown above?

A. 1,2,3,4

B. 1,1,1,2

C. 2,1,1,1

D. 2,2,3,1

What element has 14 protons

List the seven colors of the electromagnetic spectrum by temperature, beginning with the coolest

A container at stp contains 3.46 moles of neon gas. What is the volume of the neon gas?

How many grams of O2 are needed to react with 8.9 moles of Fe?

How do an isotope and a radioactive isotope differ?

You place air in a sealed can at stp. ypu triple its absolute temperture (K) while leaveing the volume constant. what happenes to the pressure

A current of 10.4 a is applied to 1.25 l of a solution of 0.552 m hbr converting some of the h + to h2 (g), which bubbles out of solution.

What is a greenhouse gas?

Which statement best describes a mole?

The data below were collected for the following reaction at 500 ∘C: CH3CN (g) →CH3NC (g) Time (h) [CH3CN] (M) 0.0 1.000 5.0 0.794 10.0 0.631 15.0 0.501 20.0 0.398 25.0 0.