If an atom has 34 protons and 40 neutrons, what is its mass number?

Explain the relationship between high and low pressure.

Can you Convert 75°F to °C

Which one is a true statement about exothermic reactions? a. energy from an outside source is continuously being added. b. the reaction container always feels cold. c. the reactants have more heat energy than the products. d.

What formula is used to calculate the maximum number of electrons in any given energy level?

2KClO3 → 2KCl + 3O2 determine how many moles of oxygen would be needed to produce 8 moles of potassium chlorate.

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.

What type of Bond exist in a molecule of hydrogen Iodide

Which common material is an example of a polyamide?