Which element has a molar mass of 30.974 g/mol?

The relative atomic mass of aluminium is 27 and of oxygen is 16. The aluminium ore shown below contains 5.4kg of aluminium and 4.8kg of oxygen. What is the value of x?

Which of the following is true about sea water? 1. Sea water is pure water (H20). 2. The salinity of sea water is negligible. 3. The chemical composition of sea water has great spatial variability. 4. Sea water is a solution.

The molecular formula for glucose is c 6 h 12 o 6. what would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration reactions?

What are the positions of the sun, moon, and Earth relative to each other when we have stronger tides?

If temperature is increased, the number of collisions per second .

In an ecosystem where 500,000 kcal of sunlight is available for producers, approximately how much chemical energy will be contained in secondary consumers?

Question 6 if a gas pressure gauge reads 32.0 psi, what is the pressure in inches of mercury? 165 in. hg 15.7 in. hg 65.1 in. hg 32.0 in. hg 6.19 in. hg

A line in the Brackett series of hydrogen has a wavelength of 1945 nm. From what state did the electron originate?

Convert 4.5 hours to seconds

Gasoline catches on fire is it flammability?