geometry
What does it mean when the scale factor of the actual object to its model is less than one?
diameter
if the sum of the diameters of two circles is 28 inches one circle has a diameter that is 8 inches longer than the diameter of the other what are the diameters of the two circles
math
Explain why arcsin 3 is undefined.
chemistry
Is this a buffer system? NH3/(NH4)2SO4? It is formed by mixing NH3 (weak base) and a strong acid (H2SO4), but according to my worksheet it is not a buffer system. Why is this so? Isnt it a buffer as long as it consists of a weak base and its salt of a strong acid? Please do no...
science
how does movement differs among Bacteria, grasshoppers, fish, bear
chemistry
1) DETERMINE pH of each of the following 2-component solutions. 0.08M RbOH & 0.130M NaHCO3
chemistry
Suppose a fuel-cell generator was used to produce electricity for a house. If each H2 molecule produces 2e- , how many kilograms of hydrogen would be required to generate the electricity needed for a typical house? Assume the home uses about 850 kWh of electricity per month, w...
physics
carts of a roller coaster are travelling 5m/s over the top of the first hill. If there is no energy loss due to friction and the hill is 50m high,what speed will the carts have at the bottom
physics
carts of a roller coaster are travelling 5m/s over the top of the first hill. If there is no energy loss due to friction and the hill is 50m high,what speed will the carts have at the bottom
chemistry
How much limestone (CaCO3) in kilograms would be required to completely neutralize a lake with a volume of 5.2 x 10^9L . The lake contains 5.0 x 10^-3 moles of H2SO4 per liter?
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