When determining an element's identity, what is the most important subatomic part to examine?

A) electrons

B) neutrons

C) valence electrons

D) protons

What happens to the heat energy which is supplied to the solid once it starts melting?

In the redox reaction: C (s) + H2O (g) → CO (g) + H2 (g), there is competition between C atoms and H atoms for

Question 1 Acetone (CH3) 2CO is a volatile Liquid that can be readily converted to vapour. Calculate the density of acetone vapour at 100,000 Pa and 398 K in kg/m3. Assume ideal behaviour and use R=8.314 J/mol. K. Your Answer: Answer

Which chemical formula (s) represents the reactants? CO2+H2O+energy = C6H12O6+O2

One of the key components of the double-exposition concerto form is the A. single exposition. B. chorale. C. cadenza. D. theme.

Label each reactant as either a Bronsted-Lowry acid or a Bronsted-Lowry base. a. HF (aq) + H2O (l) - -> H3O + (aq) + F - (aq) HF (aq) ["Bronsted-Lowry acid", "Bronsted-Lowry base"] H2O (l) ["Bronsted-Lowry acid", "Bronsted-Lowry base"] b.

What are three conditions that can cause chemical reactions to occur?

Facts about heat absorption and simple questions about heat absorption with answer

You measure a piece of wood with a meter stick and is it exactly one meter long. How many centimeters long is it?

When salt dissolved in water, what type of change occurs? A) physical only B) chemical only C) physical and chemical