How do you overcome or reduce the problem of random error and systematic error while doing experiment

The graph shows the temperature of a pure substance as heat is added to it. Label each statement with the correct number. liquid boiling only solid present only gas present mixture of solid and liquid present liquid being heated

A mixture of uneven distribution and easy separation is: - heterogeneous - a solution - homogeneous - a standard

What fossils prove that Kansas once was an underwater environmentmammal fossils A. mammal fossils B. marine fossils C. bird fossils D. plant fossils

What volume would 20.0 moles of sulfur dioxide occupy at 75.3 °C with a pressure of 2.16 atm?

Heat that flows by conduction is the transfer of thermal energy between substances in contact. What must occur for this to happen? The two systems nust be the same temperature. The two systems must not be touching each another.

Running a mile involves

How many calories are there in a 255 Food Calorie snack bar? a. 1 x 103 b. 2.55 x 105 c. 1.07 x 103 d. 60.9 e. none of the above

What is the greatest amount of ammonia (NH3) in moles that can be made with 4.7 mol N2 and 6.9 mol H2? Which reactant is limiting? How many moles of excess reactant will be left after the reaction?

Which one of these elements is an alkaline earth metal

Write the chemical equations for the neutralization reactions that occurred when hcl and naoh were added to the buffer solution.