What do the colors produced by fireworks indicate? a. a physical change c. a state change b. a chemical change d. an element change

Children's reactions to divorce often include which of the following groups of behaviors?

Which elements did you include in your question? Check all that apply. Format: What are the effects of X and Y on Z? Independent variable 1: temperature Independent variable 2: particle size Dependent variable: reaction rate

How to Calculate the percentage of compound?

Find the area of the circle. 18 cm Area = cm2 (Simplify your answer. Type an exact answer in terms of 1.)

What volume (in mL) of a 0.200 MHNO3 solution is required to completely react with 27.6 mL of a 0.100 MNa2CO3 solution according to the following balanced chemical equation? Na2CO3 (aq) + 2HNO3 (aq) →2NaNO3 (aq) + CO2 (g) + H2O (l)

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.