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Chemistry
- Element X has a mass of 300 g and a ½ life (t1/2) of 10 years. How many grams will remain after 40 years? (Show your work)
Chemistry
In reaction
CH.(9)+30 (9) ► 20092110
How many (a)moles of O are consumed and (b)moles of H,O are formed when 4.16 102 mol of CH, react?
CH.(9)+30 (9) ► 20092110
How many (a)moles of O are consumed and (b)moles of H,O are formed when 4.16 102 mol of CH, react?
Chemistry
How many molecules of water are there in 72g of H2O
Chemistry
The density of ammonia gas under certain conditions 0.505 g/L. Calculate its density in g/cm3.
Chemistry
where do people and other animals get energy to move around?
Chemistry
Sodium (Na) and potassium (K) are in the same group on the periodic table. Based on their locations which statement about sodium and potassium is true ?
Chemistry
Describe different modes through which cell membrane controls the transport of ingoing and outgoing molecules
Chemistry
Why the need to achieve EQUILIBRIUM?
Chemistry
With the help of an example explain the significance of coupling in biological reactions.
Chemistry
While performing an experiment of finding out the saponification value of fat, he notes the volume of KOH consumed by BLANK is lower than that of test. What could be possible reason of this observation?
