When you mixed 20 grams of magnesium and an excess of nitric acid, 1.7 grams of hydrogen was actually produced. What is the percent yield of hydrogen during this reaction?

Mg + 2HNO3 Mg (NO3) 2 + H2

3.3 %

48.5 %

25.7 %

102 %

98 %

What is the pH level of powdered sugar?

A researcher investigated the relationship between alcohol intake and reaction time using a driving simulation task. Participants drank either one ounce or three ounces of alcohol.

What do nonmeatals usally do in a chemical reaction

Is this hydroelectric pumped storage being used in any coastal cities without rivers? What do they use?

there are two waves. Wave A has a high frequency compared to wave B. which wave will have a longer wavelength? which one will have the higher energy?

A rod shaped organism with no nucleus commonly found in Garbage will most likely belong to which kingdom

Alka-Seltzer is a solid mixture of two substances, sodium bicarbonate (NaHCO3) and citric acid (H3C6H5O7). The substances react to form water, carbon dioxide (CO2), and Na3C6H5O7.

Four properties of water are listed. 1. It is colorless and odorless in its pure form. 2. It reacts with metals to form metal hydroxide and hydrogen gas. 3. When heated to 100 °C, water evaporates. 4. It decomposes to form hydrogen and oxygen.

Water is A. Acidic B. Basic C. Neutral

What variables affect the acceleration of an object and in what manner do they affect the acceleration?