Which one of the following is not a balanced equation? Explain why.

A. C3H8 (g) + O2 (g) → CO2 (g) + H2O (g)

B. C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g)

C. 2Mg (s) + O2 (g) → 2MgO (s)

D. 4Na (s) + O2 (g) → 2Na2O (s)

What is the primary characteristic by which the modern periodic table is arranged? Question 2 options: date of discovery chemical and physical properties increasing atomic mass increasing atomic number

Which of the following has the smallest bond dipole? a. C-H b. C-F c. C-Si d. C-C

A reaction involves 0.50grams of hydrogen (H2) gas and 1.20 grams of carbon (C) to form methane (CH4). Calculate the mass of methane gas formed?

How do the atoms of a molecule stay together? Question 2 options: A) Magnetic force B) Sharing protons C) Chemical bonds between electrons

Which equation represents fermentation? 1. C2H4 + H2O → CH3CH2OH 2. C2H4 + HCl → CH3CH2Cl 3. C6H12O6 → 2CH3CH2OH + 2CO2 4. 2CH3CHO → C3H5CHO + H2O

Which is a cause of desertification? A. farming B. creating reservoirs C. overgrazing D. driving motor vehicles

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a

Is chicken noodle soup an element, a compound, a homogeneous mixture, or a heterogeneous mixture?

How is the amount of sunlight affect the makeup of an ecosystem

How many moles are in 65 g of carbon dioxide (CO2) ?