Substance a contains 75% carbon and 25% hydrogen. substance b contains 80% carbon and 20% hydrogen. a and b are the same substance.

a. True

b. False

Explain hydrogen sulphide as a compound of sulphur.

The solubility of acetanilide in hot water (5.5 g/100 ml at 100∘C) is not very great, and its solubility in cold water (0.53 g / 100 ml at 0 ∘C) is significant. What would be the maximum theoretical percent recovery from the crystallization of 5.

Which abiotic factor differentiates between the three major types of aquatic biomes? (freshwater, estuary, marine) Question 4 options: sunlight movement salinity oxygen

Everything in the universe is made up of what?

When a police officer uses radar for speed control, the officer is using what kind of eletromagnetic waves?

How many moles of CO will be produced, if 32.5grams of H2O are produced? C6H6S+6O2=>6CO+3H2O+SO3

Identify and briefly describe two ecosystems in your community that are beyond schoolyard

Is N2H2 a ionic compound?

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.