Why is graphite softer than diamond

In the reaction C + O2 CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxygen would be needed in the reaction? 18 g 549 729 90g

Cytoplasm in a plant cell will shrink if the cell is 1. placed in a concentrated salt solution 2. kept warm and moist and in medium light 3. placed in distilled water 4. exposed to a different concentration of nitrogen gas

Write a balanced molecular equation describing each of the following chemical reactions. (a) Solid calcium carbonate is heated and decomposes to solid calcium oxide and carbon dioxide gas.

What are at least 2 functions of DNA

How many molecules of water would be needed to break apart a polysaccharide molecule made up of 20 simple sugars and what is the process called?

Which statement describe how the bond between two oxygen bond atoms is formed?

The bonds in the compound MgSO4 can be described as A. ionic, only B. covalent, only C. both ionic and covalent D. neither ionic nor covalent

If The mass of a box is increased and the force stay the same, determine the relationship with acceleration

A balloon contains 0.15 moles of co2 gas. how many molecules of co2 are in the balloon?

Acids A) are generally proton donors B) produce H + ions in solution C) are electron pair acceptors D) may include all of these characteristics