Scientific theories can change over time as new information is discovered if a scientific theory changes does this mean that it was not a good theory to begin with

An archaeologist finds a 1.62kg goblet that she believes to be made of pure gold. She determines that the volume of the goblet is 205mL. Calculate the density of the goblet

the air pressure was 101.3 kPa, but the weatherman said it was 1001.3 kPa. What is the percentage error

If different groups of scientist have access to the same data, how can they draw different conclusions? Scientists manipulate data to fit their hypotheses, which results in different conclusions.

When using a crucible and lid, why must the crucible and lid be inspected for cracks before using?

Which statememt best describes a mole

Which atomic orbitals overlap to form the C-O bond of dimethyl ether, (CH3) 20? O c 2sp^3 + 2sp^3 OC 2sp^2 + 0 2p O c 2sp^2 + 0 25p^2 O C 2sp^3 + O 2sp?

For the reaction CO+2H2=CH3OH at 700 K, equilibrium concentrations are [H2]=0.072 M, [CO] = 0.020M, and [CH3OH] = 0.030 M. Calculate K

How to make fluffy slime without contact solution?

When you mixed 20 grams of magnesium and an excess of nitric acid, 1.7 grams of hydrogen was actually produced. What is the percent yield of hydrogen during this reaction? Mg + 2HNO3 Mg (NO3) 2 + H2 3.3 % 48.5 % 25.7 % 102 % 98 %

A small cubical furnace 50 by 50 by 50 cm on the inside is constructed of fireclay brick [k = 1.04 W/m. degree C] with a wall thickness of 10 cm. The inside of the furnace is maintained at 500 degree C, and the outside is maintained at 50 degree C.