A student measures the frequency of a wave as 2 waves/second, and the wavelength as 40 cm/wave. Use the velocity equation (v = f * λ) to calculate the speed of the wave. Show your work and include units.

Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider.

After being thoroughly stirred at 10.°C, which mixture is heterogenous? (1) 25.0 g of KCl and 100. g of H2O (2) 25.0 g of KNO3 and 100. g of H2O (3) 25.0 g of NaCl and 100. g of H2O (4) 25.0 g of NaNO3 and 100. g of H2O

Which statements about the equation shown above are correct? Check all that apply. 2h2+02>2h20

Sodium-24 has a half life of 14.8 hours how much of a 260.1mg sodium - 24 sample will remain after 3.7days?

What are five characteristics of a group on the periodic table?

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.

What type of Bond exist in a molecule of hydrogen Iodide