changes of state occur when there is change in a. thermal energy b. electromagnetic energy c. chemichal energy d. eletrical energy

How many moles of zinc are in 4.70 kg of zinc?

What is true about cellular respiration? Cellular respiration is an exothermic physical change. Cellular respiration is an endothermic physical change. Cellular respiration is an exothermic chemical reaction.

Explain what states are changing in these examples (A) Condensation: (B) Evaporation:

3.00x10^23 atoms of Au to moles

Identify the flaw in the way that Maria set up her experiment

If you get pregnant in Dec how long will it take for u to get to second trimester

Name the following compound HClO

Aluminum and Oxygen gas will react to form Aluminum Oxide (Al2O3). When the equation is balanced, How many moles of Al2O3 are formed when a mixture of 0.36 moles Al is ignited? a. 0.12 b. 0.18 c. 0.28 d. 0.46

Which state of the West produces the widest varieties of fruits, vegetables, and nuts? A) California B) Colorado C) Wyoming D) Alaska

A chemical engineer for a fertilizer company is determining the most efficient way to produce ammonia. the engineer carries out the haber reaction under four different conditions.