Chemistry Homework Assistance

QuestionAI's chemistry problem solver is a middle school chemistry tutoring tool that summarises key chemical reactions and equations in real-time, featuring a robust learning system to empower even those with a weak foundation in chemistry.

You needn't fret over the elemental properties of the periodic table anymore. Here, you can effortlessly access chemical reactions and reaction principles corresponding to each element. Deductive reasoning from microscopic phenomena to discern the original structure of molecules and atoms is a research technique we staunchly champion.

Q1.In 1865 John Newlands produced an early version of the periodic table. Part of Newlands'periodic table is shown below. Newlands'periodic table arranged all the known elements into columns in order of their atomic weight. Newlands was trying to show a pattern by putting the elements into columns. (a)Iron (Fe ) does not fit the pattern in column 7. Give a reason why. __ ... .............. .......... ......

Review the lab report conclusion and then answer the question. Based on the data gathered, we measured the boiling point of water as 99.51 degrees Celsius. The error against the expected measurement was 0.49 percent Sources of error may have been impurities in the water, contamination of the equipment, or human error in reading the thermometer. If we repeated the experiment, we might achieve more accurate results by sterilizing our equipment using distilled water, and verifying that the thermometer's readings are correct. Which best indicates that the primary audience is a high school science teacher?

Question 1 continues on the next page A deadly nightshade plant has chlorosis (yellow leaves). The mass of chemical A found in the leaves of the plant is 60% of the mass shown in Table 1. Calculate the mass of chemical A in 200 g of the leaves with chlorosis. Give your answer in mg. [4 marks] __ Mass of chemical A= __ mg 01.16 Suggest one reason why the leaves of the deadly nightshade plant have chlorosis. [1 mark] __ Turn over IB/MWJun23/8461/1H Do not write outside the box

NEON has 2 ISOTOPES of differing mass and in different proportions shown below. Which option demonstrates how we calculate its relative atomic mass (A_(r)) in g/mol {}^20Ne:91% {}^22Ne:9% ((91+9)times (20+22))/(100)=42 ((91+20)times (9+22))/(100)=7.11 ((91times 9)+(20times 22))/(100)=12.6 ((91times 20)+(9times 22))/(100)=20.2

find out which artificial colourings s were present in two soft drinks . Her results are shown below . What term is used to describe substance A? Enter your answer