Which part of modern atomic theory was first developed by John Dalton?

A) Electrons are found in a cloud around the nucleus

B) Atoms are rearranged during chemical reactions

C) Atoms cannot be divided

D) Electrons are spread through an atom

For the reaction N2 (g) + O2 (g) ⇌2NO (g) N2 (g) + O2 (g) ⇌2NO (g) classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the reaction.

If a molecule contains two carbon atoms and four hydrogen atoms, what can you conclude about the bond between the carbon atoms? ... ?

The following reaction was performed in a sealed vessel at 760 ∘C : H2 (g) + I2 (g) ⇌2HI (g) Initially, only H2 and I2 were present at concentrations of [H2]=3.85M and [I2]=2.35M. The equilibrium concentration of I2 is 0.0500 M.

Shown below is one step in the synthesis of racemic trans-2 - (1-propenyl) cyclohexanol from cyclohexane. from the list of reagents provided, choose the reagent (s) that will bring about this transformation.

A neutral solution contains calcium ions. What anionsare probably present?

In which of the following situations does water undergo a change in physical properties? a. The bathroom fills with steam when you take a hot shower. b. The neighbor's pond freezes over in winter. c. Water is broken down to yield H2 and O2. d. a.

Which statement best describes the ideas of two scientists who studied properties of light? Newton and Maxwell had similar ideas about light being made of particles.

As transformações estão presente em nosso cotidiano, elas nunca param de acontecer, na sua maioria invisível a olho nu. Quais critérios é preciso observar para identificar se ocorreu transformação?

U human ear is measured in?

Is the earth older than any of the rock layers.