General Chemistry Answers

ow many grams of C₅H₈ are needed to produce 216 grams of H₂O?

what mass of a sugar based marshmallow (C12H22O11) should I completely burn over a campfire to get 3.25 grams of carbon?

Elements from the same group shows similar chemical properties". 

Using scientific knowledge and understanding state why elements from the same group shows similar chemical properties.

Calculate the number of atoms of Na in 0.25 mole in sodium oxide

What are the empirical and molecular formulas of a compound that is 40.27% potassium, 26.78% chromium, and 32.95% oxygen? The molar mass of the compound is 194.2 g/mol.

Tartaric acid (C4H6O6) is naturally found in fruits like grapes and banana. It is used in the food industry as a leaving agent that gives a sour taste. Determine the percent composition of each element in the compound.

How much heat is released when 358 g of water cools from 68.3°C to 18.9°C? The specific heat of water is 4.184 J/g°C.

The average diameter of an adult human eyeball is 24mm. What is the diameter in dm?

How many hydrogen atoms are in 2.50 g of pharmacolite,

CaHAsO4•2H2O (M = 216.0)?

1. The osmotic pressure of 250mL of an aqueous solution containing 0.150g of the enzyme lysozyme is found to be 0.0013atm at 24.85⁰ Calculate the molar mass of lysozyme.