A student is using one and the same conical flask to make up several solutions of 1 M HCl solution in the lab one day. It is a very hot day and the student measures the temperature in the lab and find it fluctuates between 30C and 36C. The student is not measuring the temperature between each solution. Would you describe the error introduced by this temperature change as a systematic error? True or false

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

these nuts

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying