Is tin positively charged or negatively charged

A sample of magnesium is burned in oxygen to form magnesium oxide. What mass of oxygen is consumed if 74.62 g magnesium oxide is formed from 45.00 g magnesium

How many unpaired electrons are in a sulfur atom

What is characteristic of an ionic bond? O A. Electrons are shared between two different atoms. O B. Electrons move freely among many atoms in a metal. O C. Electrons are lost from one atom and gained by another. O D.

What are ways that humans are influencing/affecting/changing the rock cycle?

An oxygen atom has a mass of and a glass of water has a mass of. Use this information to answer the question below. Be sure your answers have the correct number of significant digits.

A) the ka for acetic acid (h3cco2h) is 1.737 * 10-5. what is the pka for this acid? b. use the pka calculated above to determine the ph at which [h3cco2h]=[h3cco2-].

Suppose you take a piece of hard wax from an unlit candle. After you roll the wax between your fingers for a while, it becomes soft. What State of matter is the softer wax? Is it possible for wax to change without changing state

Prevailing winds peru

Foods labeled "fat free" can actually contain less than 0.5 grams of fat.

Plants make their own food. The chemical reaction for this process is shown in the equation below. CO2 + H2O + energy → C6H1206 + O2 What are the products in this chemical reaction? O A. C6H1206 + energy O B. H20 + energy O C. CoH1206+02 O D.