The sugar ribose is an important component of RNA. Ribose is 40.0% C, 6.7% H, and 53.3/% by mass. How many grams of each element are present in a 50 g sample of ribose?

How do scientists distinguish between an element and a compound? List two elements and two compounds.

20 gallons into liters

A researcher studying the nutritional value of a new candy places a 5.90 g sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.30°C. If the heat capacity of the calorimeter is 45.

Alloys, such as brass, are pure substances. True or false

Based on your understanding of the periodic table, which element has the greatest number of electrons A. Uranium B. Sodium C. Selenium D. Polonium

How does temperature affect molecules

The color of Benedictâs solution is blue. What color does it change to in high sugar concentration?

What functional groups of the emulsifying agent provide the hydrophilic character? Do these groups affect the pH?

Which element has atoms that can form single, double, and triplecovalent bonds with other atoms of the same element? (1) hydrogen (3) fluorine (2) oxygen (4) carbon

Which of the following statements best describes the basic structure of an atom? Electrons and protons are in motion around a nucleus that contains neutrons Neutrons are in motion around a nucleus that contains protons and electrons Protons are in