An aqueous solution has a mass of 490 grams

containing 8.5 103 gram of calcium ions. The

concentration of calcium ions in this solution is

(1) 4.3 ppm (3) 17 ppm

(2) 8.5 ppm (4) 34 ppm

Which of the fields below deal significantly with food engineering? O A. Civil engineering and structural engineering O B. Construction technology and civil engineering O C. Structural engineering and industrial engineering O D.

The chemical formula for table sugar is C 12 H 11 O 22. What can you tell from this formula? There are 12 electrons in a carbon atom. The ratio of carbon atoms to hydrogen atoms in a molecule of sugar is 2 to 1.

What is enthalpy of atomisation

Lipid vesicles are formed containing pure water. If these vesicles are transferred to a solution that contains a rather high concentration of solutes. True or False

Oxygen always has an oxidation number of - 2 unless it is combined with fluorine or found in the compound peroxide. When in the compound peroxide, it has an oxidation number of?

List the five major pollutants in the United States

What mass of MgCl2 was produced from 5.87 of Mg (OH) 2 reacting with 12.84 g of HCl? Identify the limiting and the excess reactants.

Use a Punnett square to predict the cross of a homozygous tall parent with a homozygous short parent, if tall is dominant over short. What will be the phenotype of the offspring described in this example. Select one: a. some tall some short b.

Write the mathematical expression that allows you to solve for the oh - concentration in water when you know only the h3o + concentration.

The role gravity played in the formation of the sun?